K-Win frequently crashes when the PC starts up

Help
1

For the past few days, K-Win has been crashing frequently when I start up my PC.

Unfortunately, I can’t send an error report.

That’s why I’m asking here.

Here is the error log:

           PID: 2544 (kwin_x11)
           UID: 1000 (stephan)
           GID: 1000 (stephan)
        Signal: 11 (SEGV)
     Timestamp: Fri 2026-07-31 13:31:07 CEST (41min ago)
  Command Line: /usr/bin/kwin_x11 --replace
    Executable: /usr/bin/kwin_x11
 Control Group: /user.slice/user-1000.slice/user@1000.service/session.slice/plasma-kwin_x11.service
          Unit: user@1000.service
     User Unit: plasma-kwin_x11.service
         Slice: user-1000.slice
     Owner UID: 1000 (stephan)
       Boot ID: 9230159d59d94a50bc8074505ac69554
    Machine ID: 7fe66da5923345f8b567d75ee4af2f1c
      Hostname: BlackSnake
       Storage: /var/lib/systemd/coredump/core.kwin_x11.1000.9230159d59d94a50bc8074505ac69554.2544.1785497467000000.zst (present)
  Size on Disk: 6.1M
       Package: kwin-x11/4:6.6.4-0ubuntu1
      build-id: 3ece8a3c2fad024297c9c0d1f1b0bcd4aa91ecd4
       Message: Process 2544 (kwin_x11) of user 1000 dumped core.
                
                Module /usr/bin/kwin_x11 from deb kwin-x11-4:6.6.4-0ubuntu1.amd64
                Module linux-vdso.so.1 from deb linux-7.0.0-28.28.amd64
                Module libQt6Quick3DUtils.so.6 from deb qt6-quick3d-6.10.2-1.amd64
                Module libQt6Quick3DRuntimeRender.so.6 from deb qt6-quick3d-6.10.2-1.amd64
                Module libQt6Quick3D.so.6 from deb qt6-quick3d-6.10.2-1.amd64
                Module libqquick3dplugin.so from deb qt6-quick3d-6.10.2-1.amd64
                Module KirigamiPlasmaStyle.so from deb libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64
                Module libqqc2desktopstyleplugin.so from deb kf6-qqc2-desktop-style-6.24.0-0ubuntu1.amd64
                Module libKF6SonnetCore.so.6 from deb kf6-sonnet-6.24.0-0ubuntu1.amd64
                Module libsonnetquickplugin.so from deb kf6-sonnet-6.24.0-0ubuntu1.amd64
                Module liborg_kde_desktop_private.so from deb kf6-qqc2-desktop-style-6.24.0-0ubuntu1.amd64
                Module libKirigamiPrivate.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiPrivateplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiTemplates.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiTemplatesplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libquickwindowplugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libQt6ShaderTools.so.6 from deb qt6-shadertools-6.10.2-1.amd64
                Module libqtgraphicaleffectsprivateplugin.so from deb qt6-5compat-6.10.2-1.amd64
                Module liborg_kde_desktop.so from deb kf6-qqc2-desktop-style-6.24.0-0ubuntu1.amd64
                Module libQt6QuickControls2Basic.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libqtquickcontrols2basicstyleplugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libqtquickcontrols2plugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module KF6WindowSystemX11Plugin.so from deb kf6-kwindowsystem-6.24.0-0ubuntu1.amd64
                Module libPlasma.so.7 from deb libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64
                Module libPlasmaQuick.so.7 from deb libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64
                Module libcorebindingsplugin.so from deb libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64
                Module libqtquicktemplates2plugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libKF6KCMUtilsCore.so.6 from deb kf6-kcmutils-6.24.0-0ubuntu1.amd64
                Module libKF6KCMUtilsQuick.so.6 from deb kf6-kcmutils-6.24.0-0ubuntu1.amd64
                Module libkcmutilsqmlplugin.so from deb kf6-kcmutils-6.24.0-0ubuntu1.amd64
                Module libplasmaextracomponentsplugin.so from deb libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64
                Module liborg_kde_plasmacomponents3.so from deb libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64
                Module libKF6ItemModels.so.6 from deb kf6-kitemmodels-6.24.0-0ubuntu1.amd64
                Module libKF6Runner.so.6 from deb kf6-krunner-6.24.0-0ubuntu1.amd64
                Module libmilou.so from deb milou-4:6.6.4-0ubuntu1.amd64
                Module libeffectsplugin.so from deb kwin-x11-4:6.6.4-0ubuntu1.amd64
                Module libKirigamiLayouts.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiLayoutsplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiDialogs.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiDialogsplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiDelegates.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiDelegatesplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiPrimitives.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiPrimitivesplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiControls.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiControlsplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigami.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libKirigamiplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module libQt6QuickLayouts.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libqquicklayoutsplugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libqtgraphicaleffectsplugin.so from deb qt6-5compat-6.10.2-1.amd64
                Module libGL.so.1 from deb libglvnd-1.7.0-3.amd64
                Module krunnerintegration.so from deb kwin-x11-4:6.6.4-0ubuntu1.amd64
                Module libKF6Holidays.so.6 from deb kf6-kholidays-6.24.0-0ubuntu1.amd64
                Module libKNightTime.so.0 from deb knighttime-6.6.5-0ubuntu0.1.amd64
                Module nightlight.so from deb kwin-x11-4:6.6.4-0ubuntu1.amd64
                Module org.kde.breeze.so from deb breeze-4:6.6.5-0ubuntu0.1.amd64
                Module libKF6Style.so.6 from deb kf6-frameworkintegration-6.24.0-0ubuntu1.amd64
                Module libKirigamiPlatform.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64
                Module breeze6.so from deb breeze-4:6.6.5-0ubuntu0.1.amd64
                Module libmd.so.0 from deb libmd-1.1.0-2build4.amd64
                Module libbsd.so.0 from deb libbsd-0.12.2-2build2.amd64
                Module libtinfo.so.6 from deb ncurses-6.6+20251231-1.amd64
                Module libpciaccess.so.0 from deb libpciaccess-0.18.1-1ubuntu4.1.amd64
                Module libxml2.so.16 from deb libxml2-2.15.2+dfsg-0.1ubuntu0.1.amd64
                Module libedit.so.2 from deb libedit-3.1-20251016-1.amd64
                Module libdrm_intel.so.1 from deb libdrm-2.4.131-1.amd64
                Module libdrm_amdgpu.so.1 from deb libdrm-2.4.131-1.amd64
                Module libelf.so.1 from deb elfutils-0.194-4.amd64
                Module libxshmfence.so.1 from deb libxshmfence-1.3.3-1build1.amd64
                Module libsensors.so.5 from deb lm-sensors-1:3.6.2-2build1.amd64
                Module libLLVM.so.21.1 from deb llvm-toolchain-21-1:21.1.8-6ubuntu1.amd64
                Module libxcb-present.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-dri3.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libXxf86vm.so.1 from deb libxxf86vm-1:1.1.4-2.amd64
                Module libgallium-26.0.3-1ubuntu1.so from deb mesa-26.0.3-1ubuntu1.amd64
                Module libGLX_mesa.so.0 from deb mesa-26.0.3-1ubuntu1.amd64
                Module libqxcb-glx-integration.so from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libcomposeplatforminputcontextplugin.so from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libXrender.so.1 from deb libxrender-1:0.9.12-1build1.amd64
                Module libKF6Bookmarks.so.6 from deb kf6-kbookmarks-6.24.0-0ubuntu1.amd64
                Module libKF6BookmarksWidgets.so.6 from deb kf6-kbookmarks-6.24.0-0ubuntu1.amd64
                Module libQt6QuickTemplates2.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libKF6Completion.so.6 from deb kf6-kcompletion-6.24.0-0ubuntu1.amd64
                Module libXcursor.so.1 from deb libxcursor-1:1.2.3-1build1.amd64
                Module libKF6StatusNotifierItem.so.6 from deb kf6-kstatusnotifieritem-6.24.0-0ubuntu1.amd64
                Module libKF6KIOWidgets.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64
                Module libKF6KIOFileWidgets.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64
                Module libQt6QuickControls2.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module KDEPlasmaPlatformTheme6.so from deb plasma-integration-6.6.5-0ubuntu0.1.amd64
                Module libuuid.so.1 from deb util-linux-2.41.3-3ubuntu2.amd64
                Module libxcb-xinput.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libICE.so.6 from deb libice-2:1.1.1-1build1.amd64
                Module libSM.so.6 from deb libsm-2:1.2.6-1build1.amd64
                Module libX11-xcb.so.1 from deb libx11-2:1.8.13-1.amd64
                Module libQt6XcbQpa.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libqxcb.so from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libtasn1.so.6 from deb libtasn1-6-4.21.0-2.amd64
                Module libp11-kit.so.0 from deb p11-kit-0.26.2-2.amd64
                Module libsasl2.so.2 from deb cyrus-sasl2-2.1.28+dfsg1-9ubuntu3.amd64
                Module libgmp.so.10 from deb gmp-2:6.3.0+dfsg-5ubuntu2.amd64
                Module libhogweed.so.6 from deb nettle-3.10.2-1.amd64
                Module libunistring.so.5 from deb libunistring-1.3-2build1.amd64
                Module libgmodule-2.0.so.0 from deb glib2.0-2.88.0-1.amd64
                Module libgnutls.so.30 from deb gnutls28-3.8.12-2ubuntu1.1.amd64
                Module libnettle.so.8 from deb nettle-3.10.2-1.amd64
                Module libpsl.so.5 from deb libpsl-0.21.2-1.1build2.amd64
                Module libssh2.so.1 from deb libssh2-1.11.1-1ubuntu0.26.04.3.amd64
                Module liblber.so.2 from deb openldap-2.6.10+dfsg-1ubuntu5.amd64
                Module libldap.so.2 from deb openldap-2.6.10+dfsg-1ubuntu5.amd64
                Module librtmp.so.1 from deb rtmpdump-2.4+20151223.gitfa8646d.1-3.amd64
                Module libidn2.so.0 from deb libidn2-2.3.8-4build1.amd64
                Module libnghttp2.so.14 from deb nghttp2-1.68.0-2ubuntu0.2.amd64
                Module libimobiledevice-glue-1.0.so.0 from deb libimobiledevice-glue-1.3.2-2build1.amd64
                Module libusbmuxd-2.0.so.7 from deb libusbmuxd-2.1.1-1.amd64
                Module libssl.so.3 from deb openssl-3.5.5-1ubuntu3.3.amd64
                Module libgio-2.0.so.0 from deb glib2.0-2.88.0-1.amd64
                Module libcurl-gnutls.so.4 from deb curl-8.18.0-1ubuntu2.3.amd64
                Module libkeyutils.so.1 from deb keyutils-1.6.3-6ubuntu3.amd64
                Module libKF6BreezeIcons.so.6 from deb kf6-breeze-icons-6.24.0-0ubuntu1.amd64
                Module libKF6Codecs.so.6 from deb kf6-kcodecs-6.24.0-0ubuntu1.amd64
                Module libselinux.so.1 from deb libselinux-3.9-4build1.amd64
                Module libblkid.so.1 from deb util-linux-2.41.3-3ubuntu2.amd64
                Module libplist-2.0.so.4 from deb libplist-2.7.0+git20250820-1build1.amd64
                Module libimobiledevice-1.0.so.6 from deb libimobiledevice-1.4.0-1build1.amd64
                Module libgobject-2.0.so.0 from deb glib2.0-2.88.0-1.amd64
                Module libpxbackend-1.0.so from deb libproxy-0.5.12-1.amd64
                Module libbrotlicommon.so.1 from deb brotli-1.2.0-3build1.amd64
                Module libkrb5support.so.0 from deb krb5-1.22.1-2ubuntu4.1.amd64
                Module libcom_err.so.2 from deb e2fsprogs-1.47.2-3ubuntu4.amd64
                Module libk5crypto.so.3 from deb krb5-1.22.1-2ubuntu4.1.amd64
                Module libkrb5.so.3 from deb krb5-1.22.1-2ubuntu4.1.amd64
                Module libKF6IconThemes.so.6 from deb kf6-kiconthemes-6.24.0-0ubuntu2.amd64
                Module libKF6IconWidgets.so.6 from deb kf6-kiconthemes-6.24.0-0ubuntu2.amd64
                Module libKF6ItemViews.so.6 from deb kf6-kitemviews-6.24.0-0ubuntu1.amd64
                Module libQt6PrintSupport.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libKF6ConfigWidgets.so.6 from deb kf6-kconfigwidgets-6.24.0-0ubuntu1.amd64
                Module libXext.so.6 from deb libxext-2:1.3.4-1build3.amd64
                Module libxcb-util.so.1 from deb xcb-util-0.4.1-1build1.amd64
                Module libmount.so.1 from deb util-linux-2.41.3-3ubuntu2.amd64
                Module libKF6WidgetsAddons.so.6 from deb kf6-kwidgetsaddons-6.24.0-0ubuntu1.amd64
                Module libKF6Solid.so.6 from deb kf6-solid-6.24.0-0ubuntu1.amd64
                Module libwayland-cursor.so.0 from deb wayland-1.24.0-2.amd64
                Module libgomp.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64
                Module libicudata.so.78 from deb icu-78.2-2ubuntu1.amd64
                Module libsystemd.so.0 from deb systemd-259.5-0ubuntu3.amd64
                Module libgraphite2.so.3 from deb graphite2-1.3.14-11ubuntu1.1.amd64
                Module libpcre2-8.so.0 from deb pcre2-10.46-1build1.amd64
                Module libatomic.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64
                Module libGLdispatch.so.0 from deb libglvnd-1.7.0-3.amd64
                Module libproxy.so.1 from deb libproxy-0.5.12-1.amd64
                Module libbrotlidec.so.1 from deb brotli-1.2.0-3build1.amd64
                Module libgssapi_krb5.so.2 from deb krb5-1.22.1-2ubuntu4.1.amd64
                Module libQt6QmlWorkerScript.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libKF6XmlGui.so.6 from deb kf6-kxmlgui-6.24.0-0ubuntu1.amd64
                Module libXi.so.6 from deb libxi-2:1.8.2-2.amd64
                Module libKF6IdleTime.so.6 from deb kf6-kidletime-6.24.0-0ubuntu1.amd64
                Module libxcb-image.so.0 from deb xcb-util-image-0.4.0-2build2.amd64
                Module libxcb-render-util.so.0 from deb xcb-util-renderutil-0.3.10-1build1.amd64
                Module libKF6KIOCore.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64
                Module libKF6JobWidgets.so.6 from deb kf6-kjobwidgets-6.24.0-0ubuntu1.amd64
                Module libKF6KIOGui.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64
                Module libexpat.so.1 from deb expat-2.7.4-1.amd64
                Module libffi.so.8 from deb libffi-3.5.2-4.amd64
                Module libogg.so.0 from deb libogg-1.3.6-2.amd64
                Module libvorbis.so.0 from deb libvorbis-1.3.7-3build2.amd64
                Module libwayland-client.so.0 from deb wayland-1.24.0-2.amd64
                Module libQt6WaylandClient.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libcrypto.so.3 from deb openssl-3.5.5-1ubuntu3.3.amd64
                Module liblzma.so.5 from deb xz-utils-5.8.3-1.amd64
                Module libbz2.so.1.0 from deb bzip2-1.0.8-6build2.amd64
                Module libzstd.so.1 from deb libzstd-1.5.7+dfsg-3.amd64
                Module libpcre2-16.so.0 from deb pcre2-10.46-1build1.amd64
                Module libb2.so.1 from deb libb2-0.98.1-1.1build2.amd64
                Module libdouble-conversion.so.3 from deb double-conversion-3.4.0-1.amd64
                Module libicuuc.so.78 from deb icu-78.2-2ubuntu1.amd64
                Module libicui18n.so.78 from deb icu-78.2-2ubuntu1.amd64
                Module libdbus-1.so.3 from deb dbus-1.16.2-2ubuntu4.amd64
                Module libz.so.1 from deb zlib-1:1.3.dfsg+really1.3.1-1ubuntu3.amd64
                Module libfreetype.so.6 from deb freetype-2.14.2+dfsg-1ubuntu0.1.amd64
                Module libmd4c.so.0 from deb md4c-0.5.2-2build1.amd64
                Module libharfbuzz.so.0 from deb harfbuzz-12.3.2-2.amd64
                Module libpng16.so.16 from deb libpng1.6-1.6.57-1.amd64
                Module libOpenGL.so.0 from deb libglvnd-1.7.0-3.amd64
                Module libGLX.so.0 from deb libglvnd-1.7.0-3.amd64
                Module libglib-2.0.so.0 from deb glib2.0-2.88.0-1.amd64
                Module libfontconfig.so.1 from deb fontconfig-2.17.1-3ubuntu1.amd64
                Module libEGL.so.1 from deb libglvnd-1.7.0-3.amd64
                Module libXfixes.so.3 from deb libxfixes-1:6.0.0-2build2.amd64
                Module libxcb-res.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libQt6Xml.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libQt6Network.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libQt6QmlModels.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libQt6QmlMeta.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libKF6Notifications.so.6 from deb kf6-knotifications-6.24.0-0ubuntu1.amd64
                Module libKF6Package.so.6 from deb kf6-kpackage-6.24.0-0ubuntu1.amd64
                Module libdisplay-info.so.3 from deb libdisplay-info-0.3.0-1.amd64
                Module libQt6OpenGL.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libKScreenLocker.so.6 from deb kscreenlocker-6.6.5-0ubuntu0.1.amd64
                Module libPlasmaActivities.so.7 from deb plasma-activities-6.6.4-0ubuntu1.amd64
                Module libxcb-xinerama.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-sync.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-shm.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-icccm.so.4 from deb xcb-util-wm-0.4.2-1build1.amd64
                Module libxcb-glx.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-damage.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-cursor.so.0 from deb xcb-util-cursor-0.1.6-1.amd64
                Module libKGlobalAccelD.so.0 from deb kglobalacceld-6.6.5-0ubuntu0.1.amd64
                Module libgbm.so.1 from deb mesa-26.0.3-1ubuntu1.amd64
                Module libdrm.so.2 from deb libdrm-2.4.131-1.amd64
                Module liblcms2.so.2 from deb lcms2-2.17-1ubuntu0.2.amd64
                Module libudev.so.1 from deb systemd-259.5-0ubuntu3.amd64
                Module libkdecorations3private.so.2 from deb kdecoration-4:6.6.4-0ubuntu1.amd64
                Module libKF6I18nQml.so.6 from deb kf6-ki18n-6.24.0-0ubuntu1.amd64
                Module libKF6ConfigQml.so.6 from deb kf6-kconfig-6.24.0-0ubuntu1.amd64
                Module libQt6Sensors.so.6 from deb qt6-sensors-6.10.2-1.amd64
                Module libwayland-server.so.0 from deb wayland-1.24.0-2.amd64
                Module libltdl.so.7 from deb libtool-2.5.4-9.amd64
                Module libtdb.so.1 from deb samba-2:4.23.6+dfsg-1ubuntu2.2.amd64
                Module libvorbisfile.so.3 from deb libvorbis-1.3.7-3build2.amd64
                Module libKF6GuiAddons.so.6 from deb kf6-kguiaddons-6.24.0-0ubuntu1.1.amd64
                Module libKF6ColorScheme.so.6 from deb kf6-kcolorscheme-6.24.0-0ubuntu1.amd64
                Module libKF6Archive.so.6 from deb kf6-karchive-6.24.0-0ubuntu1.amd64
                Module libQt6Svg.so.6 from deb qt6-svg-6.10.2-2.amd64
                Module libXdmcp.so.6 from deb libxdmcp-1:1.1.5-2.amd64
                Module libXau.so.6 from deb libxau-1:1.0.11-1build2.amd64
                Module libgcc_s.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64
                Module libstdc++.so.6 from deb gcc-16-16-20260322-1ubuntu1.amd64
                Module libQt6Core.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libQt6DBus.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libQt6Gui.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libQt6Widgets.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64
                Module libqaccessibilityclient-qt6.so.0 from deb libqaccessibilityclient-0.6.0-4ubuntu1.amd64
                Module libKF6ConfigCore.so.6 from deb kf6-kconfig-6.24.0-0ubuntu1.amd64
                Module libKF6ConfigGui.so.6 from deb kf6-kconfig-6.24.0-0ubuntu1.amd64
                Module libKF6I18n.so.6 from deb kf6-ki18n-6.24.0-0ubuntu1.amd64
                Module libKF6GlobalAccel.so.6 from deb kf6-kglobalaccel-6.24.0-0ubuntu1.amd64
                Module libKF6CoreAddons.so.6 from deb kf6-kcoreaddons-6.24.0-0ubuntu1.amd64
                Module libX11.so.6 from deb libx11-2:1.8.13-1.amd64
                Module libKF6WindowSystem.so.6 from deb kf6-kwindowsystem-6.24.0-0ubuntu1.amd64
                Module libKF6Service.so.6 from deb kf6-kservice-6.24.0-0ubuntu1.amd64
                Module libQt6Qml.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libQt6Quick.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64
                Module libkdecorations3.so.6 from deb kdecoration-4:6.6.4-0ubuntu1.amd64
                Module libepoxy.so.0 from deb libepoxy-1.5.10-2build1.amd64
                Module libKF6Crash.so.6 from deb kf6-kcrash-6.24.0-0ubuntu1.amd64
                Module libkwin-x11.so.6 from deb kwin-x11-4:6.6.4-0ubuntu1.amd64
                Module libcanberra.so.0 from deb libcanberra-0.30-18ubuntu3.amd64
                Module libKF6Svg.so.6 from deb kf6-ksvg-6.24.0-0ubuntu1.amd64
                Module libxcb.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-randr.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-keysyms.so.1 from deb xcb-util-keysyms-0.4.1-1build1.amd64
                Module libxcb-shape.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-render.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-xfixes.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxcb-composite.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
                Module libxkbcommon.so.0 from deb libxkbcommon-1.13.1-1.amd64
                Module libxkbcommon-x11.so.0 from deb libxkbcommon-1.13.1-1.amd64
                Module libxcb-xkb.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64
                Stack trace of thread 2544:
                #0  0x0000700190ea642c __pthread_kill_implementation (libc.so.6 + 0xa642c)
                #1  0x0000700190e45b7e __GI_raise (libc.so.6 + 0x45b7e)
                #2  0x0000700194a06d8d _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x8d8d)
                #3  0x0000700190e45cb0 __restore_rt (libc.so.6 + 0x45cb0)
                #4  0x00007001912c1d85 __dynamic_cast (libstdc++.so.6 + 0xc1d85)
                #5  0x0000700194676ee8 _ZN4KWin9X11Window16checkActiveModalEv (libkwin-x11.so.6 + 0x476ee8)
                #6  0x00007001946772d0 _ZN4KWin9X11Window10checkGroupEPNS_5GroupEb (libkwin-x11.so.6 + 0x4772d0)
                #7  0x000070019466c294 _ZN4KWin9X11Window6manageEjb (libkwin-x11.so.6 + 0x46c294)
                #8  0x0000700194625161 _ZN4KWin9Workspace15createX11WindowEjb (libkwin-x11.so.6 + 0x425161)
                #9  0x000070019465a09f _ZN4KWin9Workspace14workspaceEventEP19xcb_generic_event_t (libkwin-x11.so.6 + 0x45a09f)
                #10 0x000070019178247f _ZN24QAbstractEventDispatcher17filterNativeEventERK10QByteArrayPvPx (libQt6Core.so.6 + 0x18247f)
                #11 0x0000700189e9bb20 _ZN14QXcbConnection14handleXcbEventEP19xcb_generic_event_t (libQt6XcbQpa.so.6 + 0x43b20)
                #12 0x0000700189e9e522 _ZN14QXcbConnection16processXcbEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6XcbQpa.so.6 + 0x46522)
                #13 0x0000700189ebbfdf n/a (libQt6XcbQpa.so.6 + 0x63fdf)
                #14 0x00007001907c7b9b n/a (libglib-2.0.so.0 + 0x60b9b)
                #15 0x00007001907c91d7 n/a (libglib-2.0.so.0 + 0x621d7)
                #16 0x00007001907c93c3 g_main_context_iteration (libglib-2.0.so.0 + 0x623c3)
                #17 0x0000700191a0513d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x40513d)
                #18 0x0000700191798f5b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198f5b)
                #19 0x0000700191792c87 _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x192c87)
                #20 0x00005e1b95391177 n/a (/usr/bin/kwin_x11 + 0x51177)
                #21 0x0000700190e2a601 __libc_start_call_main (libc.so.6 + 0x2a601)
                #22 0x0000700190e2a718 __libc_start_main_impl (libc.so.6 + 0x2a718)
                #23 0x00005e1b95394e85 n/a (/usr/bin/kwin_x11 + 0x54e85)
                
                Stack trace of thread 2551:
                #0  0x0000700190eaca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)
                #1  0x0000700190ea061c __internal_syscall_cancel (libc.so.6 + 0xa061c)
                #2  0x0000700190f282f6 __GI_ppoll (libc.so.6 + 0x1282f6)
                #3  0x00007001907c92f1 n/a (libglib-2.0.so.0 + 0x622f1)
                #4  0x00007001907c93c3 g_main_context_iteration (libglib-2.0.so.0 + 0x623c3)
                #5  0x0000700191a0513d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x40513d)
                #6  0x0000700191798f5b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x198f5b)
                #7  0x0000700191882aae _ZN7QThread4execEv (libQt6Core.so.6 + 0x282aae)
                #8  0x000070019257904d n/a (libQt6DBus.so.6 + 0x4004d)
                #9  0x00007001919185a6 n/a (libQt6Core.so.6 + 0x3185a6)
                #10 0x0000700190ea407a start_thread (libc.so.6 + 0xa407a)
                #11 0x0000700190f3772c __clone3 (libc.so.6 + 0x13772c)
                
                Stack trace of thread 2552:
                #0  0x0000700190eaca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)
                #1  0x0000700190ea061c __internal_syscall_cancel (libc.so.6 + 0xa061c)
                #2  0x0000700190f27dce __GI___poll (libc.so.6 + 0x127dce)
                #3  0x0000700194a7bbb6 n/a (libxcb.so.1 + 0xdbb6)
                #4  0x0000700194a7d72c xcb_wait_for_event (libxcb.so.1 + 0xf72c)
                #5  0x0000700189eb8468 n/a (libQt6XcbQpa.so.6 + 0x60468)
                #6  0x00007001919185a6 n/a (libQt6Core.so.6 + 0x3185a6)
                #7  0x0000700190ea407a start_thread (libc.so.6 + 0xa407a)
                #8  0x0000700190f3772c __clone3 (libc.so.6 + 0x13772c)
                
                Stack trace of thread 2598:
                #0  0x0000700190eaca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)
                #1  0x0000700190ea058c __internal_syscall_cancel (libc.so.6 + 0xa058c)
                #2  0x0000700190ea0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)
                #3  0x0000700190ea3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)
                #4  0x000070018149dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)
                #5  0x00007001814538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)
                #6  0x000070018149de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)
                #7  0x0000700190ea407a start_thread (libc.so.6 + 0xa407a)
                #8  0x0000700190f3772c __clone3 (libc.so.6 + 0x13772c)

I had to shorten this code because it was over 3,200 characters long.

How can I fix this error?

2

Is this Ubuntu 26.04 with the Kubuntu Backports PPA?

I see a lot of mixed stuff…

KWin: 6.6.4 (kwin-x11/4:6.6.4-0ubuntu1),

Plasma libraries: 6.6.6 (libplasma-6.6.6-0ubuntu0.1)

I would update everything so all Plasma packages are on the same release level, but i doubt it is what cause the crash…

3

OK. This error no longer occurs.

4

KWin continues to crash every time I restart Kubuntu 26.04 LTS. The standard Kubuntu taskbar at the top of the desktop does not appear, but another taskbar at the bottom does appear as normal.

How can I fix this problem?
Would it be helpful for you to see the error code for the KWin crash? If so, what’s the best way for me to provide it?

Bildschirmfoto_20260803_080359
Bildschirmfoto_20260803_080359491×501 52.2 KB

5

Kwin crashes again when Kubuntu restarts. Here is the latest error log from the process monitor:

UID: 1000 (stephan)

GID: 1000 (stephan)

Signal: 11 (SEGV)

Timestamp: Wed 2026-08-05 06:25:02 CEST (2min 56s ago)

Command Line: /usr/bin/kwin_x11 --replace

Executable: /usr/bin/kwin_x11

Control Group: /user.slice/user-1000.slice/user@1000.service/session.slice/plasma-kwin_x11.service

Unit: user@1000.service

User Unit: plasma-kwin_x11.service

Slice: user-1000.slice

Owner UID: 1000 (stephan)

Boot ID: aa224fb953834ebead67f24e8d0f78ab

Machine ID: 7fe66da5923345f8b567d75ee4af2f1c

Hostname: BlackSnake

Storage: /var/lib/systemd/coredump/core.kwin_x11.1000.aa224fb953834ebead67f24e8d0f78a b.2649.1785903902000000.zst (present)

Size on Disk: 6.1M

Package: kwin-x11/4:6.6.4-0ubuntu1

build-id: 3ece8a3c2fad024297c9c0d1f1b0bcd4aa91ecd4

Message: Process 2649 (kwin_x11) of user 1000 dumped core.



Module /usr/bin/kwin_x11 from deb kwin-x11-4:6.6.4-0ubuntu1.amd64

Module linux-vdso.so.1 from deb linux-7.0.0-29.29.amd64

Module libQt6Quick3DUtils.so.6 from deb qt6-quick3d-6.10.2-1.amd64

Module libQt6Quick3DRuntimeRender.so.6 from deb qt6-quick3d-6.10.2-1.amd64

Module libQt6Quick3D.so.6 from deb qt6-quick3d-6.10.2-1.amd64

Module libqquick3dplugin.so from deb qt6-quick3d-6.10.2-1.amd64

Module KirigamiPlasmaStyle.so from deb libplasma-6.6.6-0ubuntu0.1.amd64

Module libKF6SonnetCore.so.6 from deb kf6-sonnet-6.24.0-0ubuntu1.amd64

Module libsonnetquickplugin.so from deb kf6-sonnet-6.24.0-0ubuntu1.amd64

Module liborg_kde_desktop_private.so from deb kf6-qqc2-desktop-style-6.24.0-0ubuntu1.amd64

Module libqqc2desktopstyleplugin.so from deb kf6-qqc2-desktop-style-6.24.0-0ubuntu1.amd64

Module libKirigamiPrivate.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiPrivateplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiTemplates.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiTemplatesplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libQt6ShaderTools.so.6 from deb qt6-shadertools-6.10.2-1.amd64

Module libqtgraphicaleffectsprivateplugin.so from deb qt6-5compat-6.10.2-1.amd64

Module liborg_kde_desktop.so from deb kf6-qqc2-desktop-style-6.24.0-0ubuntu1.amd64

Module libQt6QuickControls2Basic.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libqtquickcontrols2basicstyleplugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libqtquickcontrols2plugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libquickwindowplugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libcorebindingsplugin.so from deb kf6-ksvg-6.24.0-0ubuntu1.amd64

Module KF6WindowSystemX11Plugin.so from deb kf6-kwindowsystem-6.24.0-0ubuntu1.amd64

Module libPlasma.so.7 from deb libplasma-6.6.6-0ubuntu0.1.amd64

Module libPlasmaQuick.so.7 from deb libplasma-6.6.6-0ubuntu0.1.amd64

Module libqtquicktemplates2plugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libKF6KCMUtilsCore.so.6 from deb kf6-kcmutils-6.24.0-0ubuntu1.amd64

Module libKF6KCMUtilsQuick.so.6 from deb kf6-kcmutils-6.24.0-0ubuntu1.amd64

Module libkcmutilsqmlplugin.so from deb kf6-kcmutils-6.24.0-0ubuntu1.amd64

Module libplasmaextracomponentsplugin.so from deb libplasma-6.6.6-0ubuntu0.1.amd64

Module liborg_kde_plasmacomponents3.so from deb libplasma-6.6.6-0ubuntu0.1.amd64

Module libKF6ItemModels.so.6 from deb kf6-kitemmodels-6.24.0-0ubuntu1.amd64

Module libKF6Runner.so.6 from deb kf6-krunner-6.24.0-0ubuntu1.amd64

Module libmilou.so from deb milou-4:6.6.4-0ubuntu1.amd64

Module libeffectsplugin.so from deb kwin-x11-4:6.6.4-0ubuntu1.amd64

Module libKirigamiLayouts.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiLayoutsplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiDialogs.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiDialogsplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiDelegates.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiDelegatesplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiPrimitives.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiPrimitivesplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiControls.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiControlsplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigami.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libKirigamiplugin.so from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module libQt6QuickLayouts.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libqquicklayoutsplugin.so from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libqtgraphicaleffectsplugin.so from deb qt6-5compat-6.10.2-1.amd64

Module libGL.so.1 from deb libglvnd-1.7.0-3.amd64

Module krunnerintegration.so from deb kwin-x11-4:6.6.4-0ubuntu1.amd64

Module libKF6Holidays.so.6 from deb kf6-kholidays-6.24.0-0ubuntu1.amd64

Module libKNightTime.so.0 from deb knighttime-6.6.5-0ubuntu0.1.amd64

Module nightlight.so from deb kwin-x11-4:6.6.4-0ubuntu1.amd64

Module org.kde.breeze.so from deb breeze-4:6.6.5-0ubuntu0.1.amd64

Module libKF6Style.so.6 from deb kf6-frameworkintegration-6.24.0-0ubuntu1.amd64

Module libKirigamiPlatform.so.6 from deb kf6-kirigami-6.24.0-0ubuntu1.amd64

Module breeze6.so from deb breeze-4:6.6.5-0ubuntu0.1.amd64

Module libmd.so.0 from deb libmd-1.1.0-2build4.amd64

Module libbsd.so.0 from deb libbsd-0.12.2-2build2.amd64

Module libtinfo.so.6 from deb ncurses-6.6+20251231-1.amd64

Module libpciaccess.so.0 from deb libpciaccess-0.18.1-1ubuntu4.1.amd64

Module libxml2.so.16 from deb libxml2-2.15.2+dfsg-0.1ubuntu0.1.amd64

Module libedit.so.2 from deb libedit-3.1-20251016-1.amd64

Module libdrm_intel.so.1 from deb libdrm-2.4.131-1.amd64

Module libdrm_amdgpu.so.1 from deb libdrm-2.4.131-1.amd64

Module libelf.so.1 from deb elfutils-0.194-4.amd64

Module libxshmfence.so.1 from deb libxshmfence-1.3.3-1build1.amd64

Module libsensors.so.5 from deb lm-sensors-1:3.6.2-2build1.amd64

Module libLLVM.so.21.1 from deb llvm-toolchain-21-1:21.1.8-6ubuntu1.amd64

Module libxcb-present.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-dri3.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libXxf86vm.so.1 from deb libxxf86vm-1:1.1.4-2.amd64

Module libgallium-26.0.3-1ubuntu1.so from deb mesa-26.0.3-1ubuntu1.amd64

Module libGLX_mesa.so.0 from deb mesa-26.0.3-1ubuntu1.amd64

Module libqxcb-glx-integration.so from deb qt6-base-6.10.2+dfsg-7.amd64

Module libcomposeplatforminputcontextplugin.so from deb qt6-base-6.10.2+dfsg-7.amd64

Module libXrender.so.1 from deb libxrender-1:0.9.12-1build1.amd64

Module libKF6Bookmarks.so.6 from deb kf6-kbookmarks-6.24.0-0ubuntu1.amd64

Module libKF6BookmarksWidgets.so.6 from deb kf6-kbookmarks-6.24.0-0ubuntu1.amd64

Module libQt6QuickTemplates2.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libKF6Completion.so.6 from deb kf6-kcompletion-6.24.0-0ubuntu1.amd64

Module libXcursor.so.1 from deb libxcursor-1:1.2.3-1build1.amd64

Module libKF6StatusNotifierItem.so.6 from deb kf6-kstatusnotifieritem-6.24.0-0ubuntu1.amd64

Module libKF6KIOWidgets.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64

Module libKF6KIOFileWidgets.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64

Module libQt6QuickControls2.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module KDEPlasmaPlatformTheme6.so from deb plasma-integration-6.6.5-0ubuntu0.1.amd64

Module libuuid.so.1 from deb util-linux-2.41.3-3ubuntu2.amd64

Module libxcb-xinput.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libICE.so.6 from deb libice-2:1.1.1-1build1.amd64

Module libSM.so.6 from deb libsm-2:1.2.6-1build1.amd64

Module libX11-xcb.so.1 from deb libx11-2:1.8.13-1.amd64

Module libQt6XcbQpa.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libqxcb.so from deb qt6-base-6.10.2+dfsg-7.amd64

Module libtasn1.so.6 from deb libtasn1-6-4.21.0-2.amd64

Module libp11-kit.so.0 from deb p11-kit-0.26.2-2.amd64

Module libsasl2.so.2 from deb cyrus-sasl2-2.1.28+dfsg1-9ubuntu3.amd64

Module libgmp.so.10 from deb gmp-2:6.3.0+dfsg-5ubuntu2.amd64

Module libhogweed.so.6 from deb nettle-3.10.2-1.amd64

Module libunistring.so.5 from deb libunistring-1.3-2build1.amd64

Module libgmodule-2.0.so.0 from deb glib2.0-2.88.0-1.amd64

Module libgnutls.so.30 from deb gnutls28-3.8.12-2ubuntu1.1.amd64

Module libnettle.so.8 from deb nettle-3.10.2-1.amd64

Module libpsl.so.5 from deb libpsl-0.21.2-1.1build2.amd64

Module libssh2.so.1 from deb libssh2-1.11.1-1ubuntu0.26.04.3.amd64

Module liblber.so.2 from deb openldap-2.6.10+dfsg-1ubuntu5.amd64

Module libldap.so.2 from deb openldap-2.6.10+dfsg-1ubuntu5.amd64

Module librtmp.so.1 from deb rtmpdump-2.4+20151223.gitfa8646d.1-3.amd64

Module libidn2.so.0 from deb libidn2-2.3.8-4build1.amd64

Module libnghttp2.so.14 from deb nghttp2-1.68.0-2ubuntu0.2.amd64

Module libimobiledevice-glue-1.0.so.0 from deb libimobiledevice-glue-1.3.2-2build1.amd64

Module libusbmuxd-2.0.so.7 from deb libusbmuxd-2.1.1-1.amd64

Module libssl.so.3 from deb openssl-3.5.5-1ubuntu3.3.amd64

Module libgio-2.0.so.0 from deb glib2.0-2.88.0-1.amd64

Module libcurl-gnutls.so.4 from deb curl-8.18.0-1ubuntu2.3.amd64

Module libkeyutils.so.1 from deb keyutils-1.6.3-6ubuntu3.amd64

Module libKF6BreezeIcons.so.6 from deb kf6-breeze-icons-6.24.0-0ubuntu1.amd64

Module libKF6Codecs.so.6 from deb kf6-kcodecs-6.24.0-0ubuntu1.amd64

Module libselinux.so.1 from deb libselinux-3.9-4build1.amd64

Module libblkid.so.1 from deb util-linux-2.41.3-3ubuntu2.amd64

Module libplist-2.0.so.4 from deb libplist-2.7.0+git20250820-1build1.amd64

Module libimobiledevice-1.0.so.6 from deb libimobiledevice-1.4.0-1build1.amd64

Module libgobject-2.0.so.0 from deb glib2.0-2.88.0-1.amd64

Module libpxbackend-1.0.so from deb libproxy-0.5.12-1.amd64

Module libbrotlicommon.so.1 from deb brotli-1.2.0-3build1.amd64

Module libkrb5support.so.0 from deb krb5-1.22.1-2ubuntu4.1.amd64

Module libcom_err.so.2 from deb e2fsprogs-1.47.2-3ubuntu4.amd64

Module libk5crypto.so.3 from deb krb5-1.22.1-2ubuntu4.1.amd64

Module libkrb5.so.3 from deb krb5-1.22.1-2ubuntu4.1.amd64

Module libKF6IconThemes.so.6 from deb kf6-kiconthemes-6.24.0-0ubuntu2.amd64

Module libKF6IconWidgets.so.6 from deb kf6-kiconthemes-6.24.0-0ubuntu2.amd64

Module libKF6ItemViews.so.6 from deb kf6-kitemviews-6.24.0-0ubuntu1.amd64

Module libQt6PrintSupport.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libKF6ConfigWidgets.so.6 from deb kf6-kconfigwidgets-6.24.0-0ubuntu1.amd64

Module libXext.so.6 from deb libxext-2:1.3.4-1build3.amd64

Module libxcb-util.so.1 from deb xcb-util-0.4.1-1build1.amd64

Module libmount.so.1 from deb util-linux-2.41.3-3ubuntu2.amd64

Module libKF6WidgetsAddons.so.6 from deb kf6-kwidgetsaddons-6.24.0-0ubuntu1.amd64

Module libKF6Solid.so.6 from deb kf6-solid-6.24.0-0ubuntu1.amd64

Module libwayland-cursor.so.0 from deb wayland-1.24.0-2.amd64

Module libgomp.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64

Module libicudata.so.78 from deb icu-78.2-2ubuntu1.amd64

Module libsystemd.so.0 from deb systemd-259.5-0ubuntu3.amd64

Module libgraphite2.so.3 from deb graphite2-1.3.14-11ubuntu1.1.amd64

Module libpcre2-8.so.0 from deb pcre2-10.46-1build1.amd64

Module libatomic.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64

Module libGLdispatch.so.0 from deb libglvnd-1.7.0-3.amd64

Module libproxy.so.1 from deb libproxy-0.5.12-1.amd64

Module libbrotlidec.so.1 from deb brotli-1.2.0-3build1.amd64

Module libgssapi_krb5.so.2 from deb krb5-1.22.1-2ubuntu4.1.amd64

Module libQt6QmlWorkerScript.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libKF6XmlGui.so.6 from deb kf6-kxmlgui-6.24.0-0ubuntu1.amd64

Module libXi.so.6 from deb libxi-2:1.8.2-2.amd64

Module libKF6IdleTime.so.6 from deb kf6-kidletime-6.24.0-0ubuntu1.amd64

Module libxcb-image.so.0 from deb xcb-util-image-0.4.0-2build2.amd64

Module libxcb-render-util.so.0 from deb xcb-util-renderutil-0.3.10-1build1.amd64

Module libKF6KIOCore.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64

Module libKF6JobWidgets.so.6 from deb kf6-kjobwidgets-6.24.0-0ubuntu1.amd64

Module libKF6KIOGui.so.6 from deb kf6-kio-6.24.0-0ubuntu1.amd64

Module libexpat.so.1 from deb expat-2.7.4-1.amd64

Module libffi.so.8 from deb libffi-3.5.2-4.amd64

Module libogg.so.0 from deb libogg-1.3.6-2.amd64

Module libvorbis.so.0 from deb libvorbis-1.3.7-3build2.amd64

Module libwayland-client.so.0 from deb wayland-1.24.0-2.amd64

Module libQt6WaylandClient.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libcrypto.so.3 from deb openssl-3.5.5-1ubuntu3.3.amd64

Module liblzma.so.5 from deb xz-utils-5.8.3-1.amd64

Module libbz2.so.1.0 from deb bzip2-1.0.8-6build2.amd64

Module libzstd.so.1 from deb libzstd-1.5.7+dfsg-3.amd64

Module libpcre2-16.so.0 from deb pcre2-10.46-1build1.amd64

Module libb2.so.1 from deb libb2-0.98.1-1.1build2.amd64

Module libdouble-conversion.so.3 from deb double-conversion-3.4.0-1.amd64

Module libicuuc.so.78 from deb icu-78.2-2ubuntu1.amd64

Module libicui18n.so.78 from deb icu-78.2-2ubuntu1.amd64

Module libdbus-1.so.3 from deb dbus-1.16.2-2ubuntu4.amd64

Module libz.so.1 from deb zlib-1:1.3.dfsg+really1.3.1-1ubuntu3.amd64

Module libfreetype.so.6 from deb freetype-2.14.2+dfsg-1ubuntu0.1.amd64

Module libmd4c.so.0 from deb md4c-0.5.2-2build1.amd64

Module libharfbuzz.so.0 from deb harfbuzz-12.3.2-2.amd64

Module libpng16.so.16 from deb libpng1.6-1.6.57-1.amd64

Module libOpenGL.so.0 from deb libglvnd-1.7.0-3.amd64

Module libGLX.so.0 from deb libglvnd-1.7.0-3.amd64

Module libglib-2.0.so.0 from deb glib2.0-2.88.0-1.amd64

Module libfontconfig.so.1 from deb fontconfig-2.17.1-3ubuntu1.amd64

Module libEGL.so.1 from deb libglvnd-1.7.0-3.amd64

Module libXfixes.so.3 from deb libxfixes-1:6.0.0-2build2.amd64

Module libxcb-res.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libQt6Xml.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libQt6Network.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libQt6QmlModels.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libQt6QmlMeta.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libKF6Notifications.so.6 from deb kf6-knotifications-6.24.0-0ubuntu1.amd64

Module libKF6Package.so.6 from deb kf6-kpackage-6.24.0-0ubuntu1.amd64

Module libdisplay-info.so.3 from deb libdisplay-info-0.3.0-1.amd64

Module libQt6OpenGL.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libKScreenLocker.so.6 from deb kscreenlocker-6.6.5-0ubuntu0.1.amd64

Module libPlasmaActivities.so.7 from deb plasma-activities-6.6.4-0ubuntu1.amd64

Module libxcb-xinerama.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-sync.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-shm.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-icccm.so.4 from deb xcb-util-wm-0.4.2-1build1.amd64

Module libxcb-glx.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-damage.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-cursor.so.0 from deb xcb-util-cursor-0.1.6-1.amd64

Module libKGlobalAccelD.so.0 from deb kglobalacceld-6.6.5-0ubuntu0.1.amd64

Module libgbm.so.1 from deb mesa-26.0.3-1ubuntu1.amd64

Module libdrm.so.2 from deb libdrm-2.4.131-1.amd64

Module liblcms2.so.2 from deb lcms2-2.17-1ubuntu0.2.amd64

Module libudev.so.1 from deb systemd-259.5-0ubuntu3.amd64

Module libkdecorations3private.so.2 from deb kdecoration-4:6.6.4-0ubuntu1.amd64

Module libKF6I18nQml.so.6 from deb kf6-ki18n-6.24.0-0ubuntu1.amd64

Module libKF6ConfigQml.so.6 from deb kf6-kconfig-6.24.0-0ubuntu1.amd64

Module libQt6Sensors.so.6 from deb qt6-sensors-6.10.2-1.amd64

Module libwayland-server.so.0 from deb wayland-1.24.0-2.amd64

Module libltdl.so.7 from deb libtool-2.5.4-9.amd64

Module libtdb.so.1 from deb samba-2:4.23.6+dfsg-1ubuntu2.2.amd64

Module libvorbisfile.so.3 from deb libvorbis-1.3.7-3build2.amd64

Module libKF6GuiAddons.so.6 from deb kf6-kguiaddons-6.24.0-0ubuntu1.1.amd64

Module libKF6ColorScheme.so.6 from deb kf6-kcolorscheme-6.24.0-0ubuntu1.amd64

Module libKF6Archive.so.6 from deb kf6-karchive-6.24.0-0ubuntu1.amd64

Module libQt6Svg.so.6 from deb qt6-svg-6.10.2-2.amd64

Module libXdmcp.so.6 from deb libxdmcp-1:1.1.5-2.amd64

Module libXau.so.6 from deb libxau-1:1.0.11-1build2.amd64

Module libgcc_s.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64

Module libstdc++.so.6 from deb gcc-16-16-20260322-1ubuntu1.amd64

Module libQt6Core.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libQt6DBus.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libQt6Gui.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libQt6Widgets.so.6 from deb qt6-base-6.10.2+dfsg-7.amd64

Module libqaccessibilityclient-qt6.so.0 from deb libqaccessibilityclient-0.6.0-4ubuntu1.amd64

Module libKF6ConfigCore.so.6 from deb kf6-kconfig-6.24.0-0ubuntu1.amd64

Module libKF6ConfigGui.so.6 from deb kf6-kconfig-6.24.0-0ubuntu1.amd64

Module libKF6I18n.so.6 from deb kf6-ki18n-6.24.0-0ubuntu1.amd64

Module libKF6GlobalAccel.so.6 from deb kf6-kglobalaccel-6.24.0-0ubuntu1.amd64

Module libKF6CoreAddons.so.6 from deb kf6-kcoreaddons-6.24.0-0ubuntu1.amd64

Module libX11.so.6 from deb libx11-2:1.8.13-1.amd64

Module libKF6WindowSystem.so.6 from deb kf6-kwindowsystem-6.24.0-0ubuntu1.amd64

Module libKF6Service.so.6 from deb kf6-kservice-6.24.0-0ubuntu1.amd64

Module libQt6Qml.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libQt6Quick.so.6 from deb qt6-declarative-6.10.2+dfsg-3.amd64

Module libkdecorations3.so.6 from deb kdecoration-4:6.6.4-0ubuntu1.amd64

Module libepoxy.so.0 from deb libepoxy-1.5.10-2build1.amd64

Module libKF6Crash.so.6 from deb kf6-kcrash-6.24.0-0ubuntu1.amd64

Module libkwin-x11.so.6 from deb kwin-x11-4:6.6.4-0ubuntu1.amd64

Module libcanberra.so.0 from deb libcanberra-0.30-18ubuntu3.amd64

Module libKF6Svg.so.6 from deb kf6-ksvg-6.24.0-0ubuntu1.amd64

Module libxcb.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-randr.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-keysyms.so.1 from deb xcb-util-keysyms-0.4.1-1build1.amd64

Module libxcb-shape.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-render.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-xfixes.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxcb-composite.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64

Module libxkbcommon.so.0 from deb libxkbcommon-1.13.1-1.amd64

Module libxkbcommon-x11.so.0 from deb libxkbcommon-1.13.1-1.amd64

Module libxcb-xkb.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64

Stack trace of thread 2649:

#0 0x00007e9bcd0a642c __pthread_kill_implementation (libc.so.6 + 0xa642c)

#1 0x00007e9bcd045b7e __GI_raise (libc.so.6 + 0x45b7e)

#2 0x00007e9bd0c47d8d _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x8d8d)

#3 0x00007e9bcd045cb0 __restore_rt (libc.so.6 + 0x45cb0)

#4 0x00007e9bcd4c1d85 __dynamic_cast (libstdc++.so.6 + 0xc1d85)

#5 0x00007e9bd0876ee8 _ZN4KWin9X11Window16checkActiveModalEv (libkwin-x11.so.6 + 0x476ee8)

#6 0x00007e9bd08772d0 _ZN4KWin9X11Window10checkGroupEPNS_5GroupEb (libkwin-x11.so.6 + 0x4772d0)

#7 0x00007e9bd086c294 _ZN4KWin9X11Window6manageEjb (libkwin-x11.so.6 + 0x46c294)

#8 0x00007e9bd0825161 _ZN4KWin9Workspace15createX11WindowEjb (libkwin-x11.so.6 + 0x425161)

#9 0x00007e9bd085a09f _ZN4KWin9Workspace14workspaceEventEP19xcb_generic_ event_t (libkwin-x11.so.6 + 0x45a09f)

#10 0x00007e9bcd98247f _ZN24QAbstractEventDispatcher17filterNativeEventER K10QByteArrayPvPx (libQt6Core.so.6 + 0x18247f)

#11 0x00007e9bc60d9b20 _ZN14QXcbConnection14handleXcbEventEP19xcb_generic _event_t (libQt6XcbQpa.so.6 + 0x43b20)

#12 0x00007e9bc60dc522 _ZN14QXcbConnection16processXcbEventsE6QFlagsIN10Q EventLoop17ProcessEventsFlagEE (libQt6XcbQpa.so.6 + 0x46522)

#13 0x00007e9bc60f9fdf n/a (libQt6XcbQpa.so.6 + 0x63fdf)

#14 0x00007e9bcc9ffb9b n/a (libglib-2.0.so.0 + 0x60b9b)

#15 0x00007e9bcca011d7 n/a (libglib-2.0.so.0 + 0x621d7)

#16 0x00007e9bcca013c3 g_main_context_iteration (libglib-2.0.so.0 + 0x623c3)

#17 0x00007e9bcdc0513d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN 10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x40513d)

#18 0x00007e9bcd998f5b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFla gEE (libQt6Core.so.6 + 0x198f5b)

#19 0x00007e9bcd992c87 _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x192c87)

#20 0x000057efc162d177 n/a (/usr/bin/kwin_x11 + 0x51177)

#21 0x00007e9bcd02a601 __libc_start_call_main (libc.so.6 + 0x2a601)

#22 0x00007e9bcd02a718 __libc_start_main_impl (libc.so.6 + 0x2a718)

#23 0x000057efc1630e85 n/a (/usr/bin/kwin_x11 + 0x54e85)



Stack trace of thread 2656:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a061c __internal_syscall_cancel (libc.so.6 + 0xa061c)

#2 0x00007e9bcd1282f6 __GI_ppoll (libc.so.6 + 0x1282f6)

#3 0x00007e9bcca012f1 n/a (libglib-2.0.so.0 + 0x622f1)

#4 0x00007e9bcca013c3 g_main_context_iteration (libglib-2.0.so.0 + 0x623c3)

#5 0x00007e9bcdc0513d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN 10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x40513d)

#6 0x00007e9bcd998f5b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFla gEE (libQt6Core.so.6 + 0x198f5b)

#7 0x00007e9bcda82aae _ZN7QThread4execEv (libQt6Core.so.6 + 0x282aae)

#8 0x00007e9bcf03b04d n/a (libQt6DBus.so.6 + 0x4004d)

#9 0x00007e9bcdb185a6 n/a (libQt6Core.so.6 + 0x3185a6)

#10 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#11 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2657:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a061c __internal_syscall_cancel (libc.so.6 + 0xa061c)

#2 0x00007e9bcd127dce __GI___poll (libc.so.6 + 0x127dce)

#3 0x00007e9bd0cbcbb6 n/a (libxcb.so.1 + 0xdbb6)

#4 0x00007e9bd0cbe72c xcb_wait_for_event (libxcb.so.1 + 0xf72c)

#5 0x00007e9bc60f6468 n/a (libQt6XcbQpa.so.6 + 0x60468)

#6 0x00007e9bcdb185a6 n/a (libQt6Core.so.6 + 0x3185a6)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2667:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2666:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2703:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2702:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2716:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2714:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2704:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2701:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2715:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2718:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a061c __internal_syscall_cancel (libc.so.6 + 0xa061c)

#2 0x00007e9bcd1282f6 __GI_ppoll (libc.so.6 + 0x1282f6)

#3 0x00007e9bcca012f1 n/a (libglib-2.0.so.0 + 0x622f1)

#4 0x00007e9bcca013c3 g_main_context_iteration (libglib-2.0.so.0 + 0x623c3)

#5 0x00007e9bcdc0513d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN 10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x40513d)

#6 0x00007e9bcd998f5b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFla gEE (libQt6Core.so.6 + 0x198f5b)

#7 0x00007e9bcda82aae _ZN7QThread4execEv (libQt6Core.so.6 + 0x282aae)

#8 0x00007e9bcdb185a6 n/a (libQt6Core.so.6 + 0x3185a6)

#9 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#10 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2719:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3602 __pthread_cond_wait_common (libc.so.6 + 0xa3602)

#4 0x00007e9bcdb12533 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x312533)

#5 0x00007e9bcda7ffae n/a (libQt6Core.so.6 + 0x27ffae)

#6 0x00007e9bcdb185a6 n/a (libQt6Core.so.6 + 0x3185a6)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2720:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a061c __internal_syscall_cancel (libc.so.6 + 0xa061c)

#2 0x00007e9bcd1282f6 __GI_ppoll (libc.so.6 + 0x1282f6)

#3 0x00007e9bcca012f1 n/a (libglib-2.0.so.0 + 0x622f1)

#4 0x00007e9bcca013c3 g_main_context_iteration (libglib-2.0.so.0 + 0x623c3)

#5 0x00007e9bcdc0513d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN 10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x40513d)

#6 0x00007e9bcd998f5b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFla gEE (libQt6Core.so.6 + 0x198f5b)

#7 0x00007e9bcda82aae _ZN7QThread4execEv (libQt6Core.so.6 + 0x282aae)

#8 0x00007e9bcdb185a6 n/a (libQt6Core.so.6 + 0x3185a6)

#9 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#10 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)



Stack trace of thread 2717:

#0 0x00007e9bcd0aca82 __syscall_cancel_arch (libc.so.6 + 0xaca82)

#1 0x00007e9bcd0a058c __internal_syscall_cancel (libc.so.6 + 0xa058c)

#2 0x00007e9bcd0a0967 __futex_abstimed_wait_common64 (libc.so.6 + 0xa0967)

#3 0x00007e9bcd0a3347 __pthread_cond_wait_common (libc.so.6 + 0xa3347)

#4 0x00007e9bbd89dedd n/a (libgallium-26.0.3-1ubuntu1.so + 0x69dedd)

#5 0x00007e9bbd8538dc n/a (libgallium-26.0.3-1ubuntu1.so + 0x6538dc)

#6 0x00007e9bbd89de1c n/a (libgallium-26.0.3-1ubuntu1.so + 0x69de1c)

#7 0x00007e9bcd0a407a start_thread (libc.so.6 + 0xa407a)

#8 0x00007e9bcd13772c __clone3 (libc.so.6 + 0x13772c)

ELF object binary architecture: AMD x86-64

Kindly asked: Can anyone help me solve this problem?

Bildschirmfoto_20260805_103956
Bildschirmfoto_20260805_103956686×409 74.9 KB

6

One more thing: if Kubuntu starts up with errors like that, I log out and then log back in, and Kubuntu starts up normally again without any errors.

7

Plasma 6.6 branch is now unsupported. So you probably won’t have any update before kubuntu updates to a newer version. 6.7 is the last with X11 session support.

Still is it reported to bugs.kde.org ? That’s the way to keep devs informed.

_ZN14QXcbConnection16processXcbEventsE6QFlagsIN10Q

That’s a kwin_X11 specific crash.

Have you tried a Wayland session ?

8

Thank you very much, that was the right tip. I restarted with the Wayland session, and the error no longer occurs.

However, my Xscreensaver is now working properly. It still starts up as normal, but I can no longer open its settings. That was the reason why I was using the X11 session.

9

@meven Thank you very much for your tip about the bug-tracking system; I’ll make use of it in future should I come across a new bug.

10

One more hint:

  • kwin-x11-4:6.6.4-0ubuntu1.amd64
  • libplasma-6.6.6-0ubuntu0.1~ubuntu26.04~ppa1.amd64

You are mixing 6.6.4 with 6.6.6 packages. Try if upgrading fixes it:

sudo apt-get update && sudo apt-get upgrade

Also I second the hint to create an issue at bugs.kde.org, if the issue can still be reproduced after the upgrade, since discuss is not for tracking/solving bug issues. Kubuntu LTS will btw receive 6.6.x updates:

11

These mixed versions are, unfortunately, not a user error. It’s how Kubuntu updates Plasma. AIUI, this is deliberate, looking at the .deb changelogs.

Unlike any other major distro that I know of, Kubuntu doesn’t build new packages for Plasma point updates if the only change was a version bump. They do this in both the Ubuntu ${DISTRIB_CODENAME}-updates APT repo, and the “semi-official” ppa:kubuntu-ppa/ppa “Kubuntu Updates” and ppa:kubuntu-ppa/backports “Kubuntu Backports” repos. AFAIK neither Fedora, SuSE, Arch, CachyOS etc. do this. They just rebuild everything (as they should). Kubuntu ends up with a weird mix of point-release versions.

I can kinda-sorta get the idea behind this (saving build times, disk space, CPU cycles), but frankly, I can’t imagine these savings to be significant with modern HW. But more significantly, critical bugfixes are sometimes missed. E.g. bug #520190 (a GPU memory leak in plasmashell) was fixed in kpipewire 6.6.6, but Kubuntu missed this and forgot or decided not to build new kpipewire packages - they’re stuck at 6.6.4, even though there’s clearly a commit between 6.6.5 and 6.6.6 that’s not just a version bump.

I’ve recently reached out about this twice on IRC (#kubuntu on libera), but that channel seems more or less dead, despite many (inactive) users including (I think) at least one person from Kubuntu. I think @rikmills sometimes posts here, and if that is so - please reconsider rebuilding everything like every other distro, if that’s possible. :slight_smile:

For this particular example, there’s no kwin-x11 6.6.6 in the PPA:

$ apt-cache policy kwin-x11
kwin-x11:
(...)
   Candidate: 4:6.6.4-0ubuntu1
(...)

but there’s a kwin-wayland 6.6.6:

$ apt-cache policy kwin-wayland
kwin-wayland:
(...)
   Candidate: 4:6.6.6-0ubuntu0.1~ubuntu26.04~ppa1
(...)

This obviously causes a weird mix of 6.6.4, 6.6.5, and now 6.6.6 Plasma packages. Even a naive grep by versions shows this:

Kubuntu 26.04 with resolute-updates:

$ dpkg -l | grep -cF 6.6.4-0ubuntu1
58
$ dpkg -l | grep -cF 6.6.5-0ubuntu0.1
76

Another Kubuntu 26.04 with resolute-updates and the “Kubuntu Updates” PPA:

$ dpkg -l | grep -cF 6.6.4-0ubuntu1
52
$ dpkg -l | grep -cF 6.6.5-0ubuntu0.1
33
$ dpkg -l | grep -cF 6.6.6-0ubuntu0.1
50

You can go to launchpad dot net, e.g. /~kubuntu-ppa/+archive/ubuntu/ppa/+packages?field.name_filter=&field.status_filter=published&field.series_filter=resolute (for some reason I’m not allowed to post URLs) and confirm many packages are simply missing from the repo - they haven’t been built. Same story for resolute-updates.

12

K-Win hasn’t crashed at all for the past two days. There were Kubuntu updates yesterday; perhaps that’s why.