System:
Kernel: 6.17.6-2-cachyos arch: x86_64 bits: 64 compiler: clang v: 21.1.4
Desktop: KDE Plasma v: 6.5.1 tk: Qt v: N/A wm: kwin_wayland dm: SDDM
Distro: CachyOS base: Arch Linux
Machine:
Type: Desktop Mobo: ASRock model: Z97X Killer serial: <superuser required>
UEFI: American Megatrends v: P1.90 date: 12/17/2014
CPU:
Info: quad core model: Intel Core i7-4790K bits: 64 type: MT MCP
arch: Haswell rev: 3 cache: L1: 256 KiB L2: 1024 KiB L3: 8 MiB
Speed (MHz): avg: 4399 min/max: 800/4400 cores: 1: 4399 2: 4399 3: 4399
4: 4399 5: 4399 6: 4399 7: 4399 8: 4399 bogomips: 63979
Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics
vendor: ASRock driver: i915 v: kernel arch: Gen-7.5 ports: active: HDMI-A-2
empty: HDMI-A-3,VGA-1 bus-ID: 00:02.0 chip-ID: 8086:0412
Device-2: NVIDIA GP104 [GeForce GTX 1070 Ti] vendor: Micro-Star MSI
driver: nvidia v: 580.95.05 arch: Pascal pcie: speed: 8 GT/s lanes: 16
ports: active: DP-1 empty: DP-2, DP-3, DVI-D-1, HDMI-A-1 bus-ID: 01:00.0
chip-ID: 10de:1b82
Display: wayland server: X.org v: 1.21.1.20 with: Xwayland v: 24.1.9
compositor: kwin_wayland driver: X: loaded: modesetting,nvidia
unloaded: vesa alternate: fbdev,intel,nouveau,nv dri: crocus
gpu: i915,nvidia,nvidia-nvswitch d-rect: 3840x1080 display-ID: 0
Monitor-1: DP-1 pos: primary,left model: VG278 res: 1920x1080 hz: 144
dpi: 82 diag: 686mm (27")
Monitor-2: HDMI-A-2 pos: right model: Sceptre X270W-1080P res: 1920x1080
hz: 60 dpi: 82 diag: 686mm (27")
API: EGL v: 1.5 platforms: device: 0 drv: nvidia device: 1 drv: crocus
device: 3 drv: swrast gbm: drv: crocus surfaceless: drv: nvidia wayland:
drv: nvidia x11: drv: nvidia inactive: device-2
API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia mesa v: 580.95.05
glx-v: 1.4 direct-render: yes renderer: NVIDIA GeForce GTX 1070 Ti/PCIe/SSE2
display-ID: :1.0
API: Vulkan v: 1.4.328 surfaces: N/A device: 0 type: discrete-gpu
driver: nvidia device-ID: 10de:1b82 device: 1 type: cpu
driver: mesa llvmpipe device-ID: 10005:0000
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor gpu: lact, nvidia-settings, nvidia-smi
wl: wayland-info x11: xdpyinfo, xprop, xrandr
Audio:
Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio
vendor: ASRock driver: snd_hda_intel v: kernel bus-ID: 00:03.0
chip-ID: 8086:0c0c
Device-2: Intel 9 Series Family HD Audio vendor: ASRock
driver: snd_hda_intel v: kernel bus-ID: 00:1b.0 chip-ID: 8086:8ca0
Device-3: NVIDIA GP104 High Definition Audio vendor: Micro-Star MSI
driver: snd_hda_intel v: kernel pcie: speed: 8 GT/s lanes: 16
bus-ID: 01:00.1 chip-ID: 10de:10f0
API: ALSA v: k6.17.6-2-cachyos status: kernel-api
Server-1: sndiod v: N/A status: off
Server-2: JACK v: 1.9.22 status: off
Server-3: PipeWire v: 1.4.9 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
Network:
Device-1: Intel Wi-Fi 6E AX210/AX1675 2x2 [Typhoon Peak] driver: iwlwifi
v: kernel pcie: speed: 5 GT/s lanes: 1 bus-ID: 03:00.0 chip-ID: 8086:2725
IF: wlan0 state: up mac: <filter>
Bluetooth:
Device-1: Intel AX210 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0
speed: 12 Mb/s lanes: 1 bus-ID: 1-7:2 chip-ID: 8087:0032
Report: btmgmt ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.4
lmp-v: 13
Drives:
Local Storage: total: 1.36 TiB used: 449.62 GiB (32.2%)
ID-1: /dev/sda vendor: Samsung model: SSD 850 EVO 500GB size: 465.76 GiB
speed: 6.0 Gb/s serial: <filter>
ID-2: /dev/sdb vendor: Toshiba model: DT01ACA100 size: 931.51 GiB
speed: 6.0 Gb/s serial: <filter>
Partition:
ID-1: / size: 447.54 GiB used: 88.41 GiB (19.8%) fs: ext4 dev: /dev/sda3
ID-2: /boot size: 2 GiB used: 639.5 MiB (31.3%) fs: vfat dev: /dev/sda1
Swap:
ID-1: swap-1 type: zram size: 31.22 GiB used: 0 KiB (0.0%) priority: 100
dev: /dev/zram0
ID-2: swap-2 type: partition size: 8 GiB used: 0 KiB (0.0%) priority: -2
dev: /dev/sda2
Sensors:
System Temperatures: cpu: 35.0 C mobo: 27.0 C
Fan Speeds (rpm): fan-1: 0 fan-2: 1407 fan-3: 0 fan-4: 0 fan-5: 0
Power: 12v: N/A 5v: N/A 3.3v: 3.33 vbat: 3.30
Info:
Memory: total: 32 GiB available: 31.22 GiB used: 4.23 GiB (13.5%)
Processes: 280 Power: uptime: 14m wakeups: 0 Init: systemd v: 258
default: graphical
Packages: 1488 pm: pacman pkgs: 1478 pm: flatpak pkgs: 10 Compilers:
clang: 21.1.4 gcc: 15.2.1 Shell: Bash v: 5.3.3 running-in: konsole
inxi: 3.3.39
After the xorg server update, which screws up the gpu priority, I decided to install KDE by using plasma-meta package (later by plasma group), then nuked XFCE4 by using “sudo pacman -Rnsc XFCE4 XFCE4-Goodies” followed by “sudo pacman -Rnsc lightdm” So far it works okay, until I get crashes when trying to use edit mode and waking up the display from standby. I dunno if I nuke the XFCE4 de right, or if I made a mistake by installing sudo pacman -S plasma after installing plasma-meta". This is happened on Wayland session, I couldn’t test the X11 session because of the xorg bug which makes the windows animations at 60hz but main monitor is set to 144hz (secondary monitor at 60hz) (Yes, I’m using the dgpu + igpu setup 4790k + gtx 1070 ti). So, do I need to reinstall cachyos to fix this or is there something else to try? Offtopic: How can I prevent the cursor not to be in second monitor after waking up display from standby?
I haven’t tried out x11 because of the xorg update which makes igpu the top priority over dgpu.
I still have a timeshift snapshot on 10/26 that is still on XFCE before the xorg update if no solution ever worked. I should’ve downgraded the 10/28 xorg-server update.
mg306
December 1, 2025, 11:29am
2
I am affected by this too.
I am using KDE on Cachy OS too. I installed KDE directly during installation and use it exclusively.
This bug appears only with one monitor which is attached directly via USB-C. At a different work place, where I use an USB-C docking station with two monitors, I do not experience this issue.
I found this entry in journalctl whose time matches one of the crashes, approximately:
Dez 01 12:11:01 solactive-z16 systemd-coredump[100855]: Process 1715 (org_kde_powerde) of user 1000 dumped core.
Stack trace of thread 40887:
#0 0x00007f86d2eaa0fb pthread_kill (libc.so.6 + 0xaa0fb)
#1 0x00007f86d2e447c8 raise (libc.so.6 + 0x447c8)
#2 0x00007f86d4b0dbd0 _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x8bd0)
#3 0x00007f86d2e44900 n/a (libc.so.6 + 0x44900)
#4 0x00007f86d2eaa0fb pthread_kill (libc.so.6 + 0xaa0fb)
#5 0x00007f86d2e447c8 raise (libc.so.6 + 0x447c8)
#6 0x00007f86d2e2560d abort (libc.so.6 + 0x2560d)
#7 0x00007f86d2e25578 n/a (libc.so.6 + 0x25578)
#8 0x00007f86d2e3aeb6 __assert_fail (libc.so.6 + 0x3aeb6)
#9 0x00007f86d2bf976d n/a (libddcutil.so.5 + 0x876d)
#10 0x00007f86d2c99394 n/a (libddcutil.so.5 + 0xa8394)
#11 0x00007f86d2ca0dfd ddca_open_display2 (libddcutil.so.5 + 0xafdfd)
#12 0x00007f86d4acdbad n/a (libpowerdevilcore.so.2 + 0x96bad)
#13 0x00007f86d37dc771 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1dc771)
#14 0x00007f86d377aed8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x17aed8)
#15 0x00007f86d377b278 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x17b278)
#16 0x00007f86d3a91b80 n/a (libQt6Core.so.6 + 0x491b80)
#17 0x00007f86d273c3e9 n/a (libglib-2.0.so.0 + 0x683e9)
#18 0x00007f86d273d808 n/a (libglib-2.0.so.0 + 0x69808)
#19 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#20 0x00007f86d3a8e7db _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x48e7db)
#21 0x00007f86d3786336 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x186336)
#22 0x00007f86d38b0aea _ZN7QThread4execEv (libQt6Core.so.6 + 0x2b0aea)
#23 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#24 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#25 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1743:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea4248 n/a (libc.so.6 + 0xa4248)
#2 0x00007f86d2ea49a3 n/a (libc.so.6 + 0xa49a3)
#3 0x00007f86d2ea74f8 pthread_cond_wait (libc.so.6 + 0xa74f8)
#4 0x00007f86d395cb58 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x35cb58)
#5 0x00007f86d2a0bb81 n/a (libQt6WaylandClient.so.6 + 0x6bb81)
#6 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#7 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#8 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1747:
#0 0x00007f86d2f3864d syscall (libc.so.6 + 0x13864d)
#1 0x00007f86d2777605 g_cond_wait (libglib-2.0.so.0 + 0xa3605)
#2 0x00007f86d26fb575 g_async_queue_pop_unlocked (libglib-2.0.so.0 + 0x27575)
#3 0x00007f86d27812b7 n/a (libglib-2.0.so.0 + 0xad2b7)
#4 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#5 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#6 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1748:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2cb33 ppoll (libc.so.6 + 0x12cb33)
#3 0x00007f86d273d860 n/a (libglib-2.0.so.0 + 0x69860)
#4 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#5 0x00007f86d273d992 n/a (libglib-2.0.so.0 + 0x69992)
#6 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#7 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#8 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 30868:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2c5ea __poll (libc.so.6 + 0x12c5ea)
#3 0x00007f86c83888a7 n/a (libpulse.so.0 + 0x348a7)
#4 0x00007f86c83713f9 pa_mainloop_poll (libpulse.so.0 + 0x1d3f9)
#5 0x00007f86c837c6be pa_mainloop_iterate (libpulse.so.0 + 0x286be)
#6 0x00007f86c837c781 pa_mainloop_run (libpulse.so.0 + 0x28781)
#7 0x00007f86c838db6d n/a (libpulse.so.0 + 0x39b6d)
#8 0x00007f86c832a506 n/a (libpulsecommon-17.0.so + 0x62506)
#9 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#10 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1744:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2c5ea __poll (libc.so.6 + 0x12c5ea)
#3 0x00007f86d2a0bbf0 n/a (libQt6WaylandClient.so.6 + 0x6bbf0)
#4 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#5 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#6 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1715:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea4248 n/a (libc.so.6 + 0xa4248)
#2 0x00007f86d2ea49a3 n/a (libc.so.6 + 0xa49a3)
#3 0x00007f86d2ea9d33 n/a (libc.so.6 + 0xa9d33)
#4 0x00007f86d395cd56 n/a (libQt6Core.so.6 + 0x35cd56)
#5 0x00007f86d38b3144 _ZN7QThread4waitE14QDeadlineTimer (libQt6Core.so.6 + 0x2b3144)
#6 0x00007f86d4ad1491 n/a (libpowerdevilcore.so.2 + 0x9a491)
#7 0x00007f86d4ac81f5 n/a (libpowerdevilcore.so.2 + 0x911f5)
#8 0x00007f86d37dc771 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1dc771)
#9 0x00007f86d377aed8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x17aed8)
#10 0x00007f86d377b278 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x17b278)
#11 0x00007f86d3a91b80 n/a (libQt6Core.so.6 + 0x491b80)
#12 0x00007f86d273c3e9 n/a (libglib-2.0.so.0 + 0x683e9)
#13 0x00007f86d273d808 n/a (libglib-2.0.so.0 + 0x69808)
#14 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#15 0x00007f86d3a8e7db _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x48e7db)
#16 0x00007f86d3786336 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x186336)
#17 0x00007f86d377fb2c _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x17fb2c)
#18 0x00005576c7f84834 n/a (/usr/lib/org_kde_powerdevil + 0x6834)
#19 0x00007f86d2e27b8b n/a (libc.so.6 + 0x27b8b)
#20 0x00007f86d2e27c4b __libc_start_main (libc.so.6 + 0x27c4b)
#21 0x00005576c7f84935 n/a (/usr/lib/org_kde_powerdevil + 0x6935)
Stack trace of thread 40885:
#0 0x00007f86d2f3864d syscall (libc.so.6 + 0x13864d)
#1 0x00007f86d2778213 g_cond_wait_until (libglib-2.0.so.0 + 0xa4213)
#2 0x00007f86d26fb1ff n/a (libglib-2.0.so.0 + 0x271ff)
#3 0x00007f86d26fb2a7 g_async_queue_timeout_pop (libglib-2.0.so.0 + 0x272a7)
#4 0x00007f86d2c8d828 n/a (libddcutil.so.5 + 0x9c828)
#5 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#6 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#7 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1749:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2cb33 ppoll (libc.so.6 + 0x12cb33)
#3 0x00007f86d273d860 n/a (libglib-2.0.so.0 + 0x69860)
#4 0x00007f86d273daef g_main_loop_run (libglib-2.0.so.0 + 0x69aef)
#5 0x00007f86cad577ac n/a (libgio-2.0.so.0 + 0x1257ac)
#6 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#7 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#8 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1737:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2cb33 ppoll (libc.so.6 + 0x12cb33)
#3 0x00007f86d273d860 n/a (libglib-2.0.so.0 + 0x69860)
#4 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#5 0x00007f86d3a8e7db _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x48e7db)
#6 0x00007f86d3786336 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x186336)
#7 0x00007f86d38b0aea _ZN7QThread4execEv (libQt6Core.so.6 + 0x2b0aea)
#8 0x00007f86d47f309f n/a (libQt6DBus.so.6 + 0x3709f)
#9 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#10 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#11 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 40886:
#0 0x00007f86d2f3614f ioctl (libc.so.6 + 0x13614f)
#1 0x00007f86d2c34325 n/a (libddcutil.so.5 + 0x43325)
#2 0x00007f86d2c3565d n/a (libddcutil.so.5 + 0x4465d)
#3 0x00007f86d2c35e99 n/a (libddcutil.so.5 + 0x44e99)
#4 0x00007f86d2c36c73 n/a (libddcutil.so.5 + 0x45c73)
#5 0x00007f86d2c36fe9 n/a (libddcutil.so.5 + 0x45fe9)
#6 0x00007f86d2c2f357 n/a (libddcutil.so.5 + 0x3e357)
#7 0x00007f86d2c8d358 n/a (libddcutil.so.5 + 0x9c358)
#8 0x00007f86d2c8e495 n/a (libddcutil.so.5 + 0x9d495)
#9 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#10 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#11 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
ELF object binary architecture: AMD x86-64
Dez 01 12:11:01 solactive-z16 systemd[1]: systemd-coredump@0-1-100854_100855-0.service: Deactivated successfully.
Dez 01 12:11:01 solactive-z16 systemd[1]: systemd-coredump@0-1-100854_100855-0.service: Consumed 534ms CPU time, 270.9M memory peak.
For a second crash shortly after I do not find such a stack trace, so I am not sure whether this is relevant.
edit: Somehow plasmashell does not crash entirely, though. In order to restore it, I first have to run pkill plasmashell, followed by plasmashell &!.
meven
December 1, 2025, 1:08pm
3
That’s a crash in libddcutil that’s the library used to handle screen brightness.
Could be one of those issues: https://bugs.kde.org/buglist.cgi?quicksearch=libddcutil&list_id=3364569
And upstream issues:
meven
December 1, 2025, 1:12pm
4
This command:
coredumpctl debug -1 org_kde_powerde -A "-ex bt -ex quit" |& tee backtrace.txt
Should give you a better trace to help with fixing it.
Ref: Debug symbols for all!
mg306
December 1, 2025, 3:16pm
5
When should I run the command? After boot or after a crash?
meven
December 1, 2025, 8:52pm
6
Anytime, this is persisted.
mg306
December 5, 2025, 11:20am
7
Today I had another crash and run the provided command. Since attaching TXT files seems to be not possible, I copy the contents.
PID: 1715 (org_kde_powerde)
UID: 1000 (mgoerner)
GID: 1000 (mgoerner)
Signal: 6 (ABRT)
Timestamp: Mon 2025-12-01 12:11:00 CET (4 days ago)
Command Line: /usr/lib/org_kde_powerdevil
Executable: /usr/lib/org_kde_powerdevil
Control Group: /user.slice/user-1000.slice/user@1000.service/background.slice/plasma-powerdevil.service
Unit: user@1000.service
User Unit: plasma-powerdevil.service
Slice: user-1000.slice
Owner UID: 1000 (mgoerner)
Boot ID: 3625b7ec59df46259902c1416e8360f4
Machine ID: 319e01eb3b014bb4874430eb0b876400
Hostname: solactive-z16
Storage: /var/lib/systemd/coredump/core.org_kde_powerde.1000.3625b7ec59df46259902c1416e8360f4.1715.1764587460000000.zst (present)
Size on Disk: 1.8M
Message: Process 1715 (org_kde_powerde) of user 1000 dumped core.
Stack trace of thread 40887:
#0 0x00007f86d2eaa0fb pthread_kill (libc.so.6 + 0xaa0fb)
#1 0x00007f86d2e447c8 raise (libc.so.6 + 0x447c8)
#2 0x00007f86d4b0dbd0 _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x8bd0)
#3 0x00007f86d2e44900 n/a (libc.so.6 + 0x44900)
#4 0x00007f86d2eaa0fb pthread_kill (libc.so.6 + 0xaa0fb)
#5 0x00007f86d2e447c8 raise (libc.so.6 + 0x447c8)
#6 0x00007f86d2e2560d abort (libc.so.6 + 0x2560d)
#7 0x00007f86d2e25578 n/a (libc.so.6 + 0x25578)
#8 0x00007f86d2e3aeb6 __assert_fail (libc.so.6 + 0x3aeb6)
#9 0x00007f86d2bf976d n/a (libddcutil.so.5 + 0x876d)
#10 0x00007f86d2c99394 n/a (libddcutil.so.5 + 0xa8394)
#11 0x00007f86d2ca0dfd ddca_open_display2 (libddcutil.so.5 + 0xafdfd)
#12 0x00007f86d4acdbad n/a (libpowerdevilcore.so.2 + 0x96bad)
#13 0x00007f86d37dc771 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1dc771)
#14 0x00007f86d377aed8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x17aed8)
#15 0x00007f86d377b278 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x17b278)
#16 0x00007f86d3a91b80 n/a (libQt6Core.so.6 + 0x491b80)
#17 0x00007f86d273c3e9 n/a (libglib-2.0.so.0 + 0x683e9)
#18 0x00007f86d273d808 n/a (libglib-2.0.so.0 + 0x69808)
#19 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#20 0x00007f86d3a8e7db _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x48e7db)
#21 0x00007f86d3786336 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x186336)
#22 0x00007f86d38b0aea _ZN7QThread4execEv (libQt6Core.so.6 + 0x2b0aea)
#23 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#24 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#25 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1743:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea4248 n/a (libc.so.6 + 0xa4248)
#2 0x00007f86d2ea49a3 n/a (libc.so.6 + 0xa49a3)
#3 0x00007f86d2ea74f8 pthread_cond_wait (libc.so.6 + 0xa74f8)
#4 0x00007f86d395cb58 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x35cb58)
#5 0x00007f86d2a0bb81 n/a (libQt6WaylandClient.so.6 + 0x6bb81)
#6 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#7 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#8 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1747:
#0 0x00007f86d2f3864d syscall (libc.so.6 + 0x13864d)
#1 0x00007f86d2777605 g_cond_wait (libglib-2.0.so.0 + 0xa3605)
#2 0x00007f86d26fb575 g_async_queue_pop_unlocked (libglib-2.0.so.0 + 0x27575)
#3 0x00007f86d27812b7 n/a (libglib-2.0.so.0 + 0xad2b7)
#4 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#5 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#6 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1748:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2cb33 ppoll (libc.so.6 + 0x12cb33)
#3 0x00007f86d273d860 n/a (libglib-2.0.so.0 + 0x69860)
#4 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#5 0x00007f86d273d992 n/a (libglib-2.0.so.0 + 0x69992)
#6 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#7 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#8 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 30868:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2c5ea __poll (libc.so.6 + 0x12c5ea)
#3 0x00007f86c83888a7 n/a (libpulse.so.0 + 0x348a7)
#4 0x00007f86c83713f9 pa_mainloop_poll (libpulse.so.0 + 0x1d3f9)
#5 0x00007f86c837c6be pa_mainloop_iterate (libpulse.so.0 + 0x286be)
#6 0x00007f86c837c781 pa_mainloop_run (libpulse.so.0 + 0x28781)
#7 0x00007f86c838db6d n/a (libpulse.so.0 + 0x39b6d)
#8 0x00007f86c832a506 n/a (libpulsecommon-17.0.so + 0x62506)
#9 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#10 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1744:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2c5ea __poll (libc.so.6 + 0x12c5ea)
#3 0x00007f86d2a0bbf0 n/a (libQt6WaylandClient.so.6 + 0x6bbf0)
#4 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#5 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#6 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1715:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea4248 n/a (libc.so.6 + 0xa4248)
#2 0x00007f86d2ea49a3 n/a (libc.so.6 + 0xa49a3)
#3 0x00007f86d2ea9d33 n/a (libc.so.6 + 0xa9d33)
#4 0x00007f86d395cd56 n/a (libQt6Core.so.6 + 0x35cd56)
#5 0x00007f86d38b3144 _ZN7QThread4waitE14QDeadlineTimer (libQt6Core.so.6 + 0x2b3144)
#6 0x00007f86d4ad1491 n/a (libpowerdevilcore.so.2 + 0x9a491)
#7 0x00007f86d4ac81f5 n/a (libpowerdevilcore.so.2 + 0x911f5)
#8 0x00007f86d37dc771 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1dc771)
#9 0x00007f86d377aed8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x17aed8)
#10 0x00007f86d377b278 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x17b278)
#11 0x00007f86d3a91b80 n/a (libQt6Core.so.6 + 0x491b80)
#12 0x00007f86d273c3e9 n/a (libglib-2.0.so.0 + 0x683e9)
#13 0x00007f86d273d808 n/a (libglib-2.0.so.0 + 0x69808)
#14 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#15 0x00007f86d3a8e7db _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x48e7db)
#16 0x00007f86d3786336 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x186336)
#17 0x00007f86d377fb2c _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x17fb2c)
#18 0x00005576c7f84834 n/a (/usr/lib/org_kde_powerdevil + 0x6834)
#19 0x00007f86d2e27b8b n/a (libc.so.6 + 0x27b8b)
#20 0x00007f86d2e27c4b __libc_start_main (libc.so.6 + 0x27c4b)
#21 0x00005576c7f84935 n/a (/usr/lib/org_kde_powerdevil + 0x6935)
Stack trace of thread 40885:
#0 0x00007f86d2f3864d syscall (libc.so.6 + 0x13864d)
#1 0x00007f86d2778213 g_cond_wait_until (libglib-2.0.so.0 + 0xa4213)
#2 0x00007f86d26fb1ff n/a (libglib-2.0.so.0 + 0x271ff)
#3 0x00007f86d26fb2a7 g_async_queue_timeout_pop (libglib-2.0.so.0 + 0x272a7)
#4 0x00007f86d2c8d828 n/a (libddcutil.so.5 + 0x9c828)
#5 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#6 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#7 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1749:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2cb33 ppoll (libc.so.6 + 0x12cb33)
#3 0x00007f86d273d860 n/a (libglib-2.0.so.0 + 0x69860)
#4 0x00007f86d273daef g_main_loop_run (libglib-2.0.so.0 + 0x69aef)
#5 0x00007f86cad577ac n/a (libgio-2.0.so.0 + 0x1257ac)
#6 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#7 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#8 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 1737:
#0 0x00007f86d2eb0892 n/a (libc.so.6 + 0xb0892)
#1 0x00007f86d2ea42d8 n/a (libc.so.6 + 0xa42d8)
#2 0x00007f86d2f2cb33 ppoll (libc.so.6 + 0x12cb33)
#3 0x00007f86d273d860 n/a (libglib-2.0.so.0 + 0x69860)
#4 0x00007f86d273d942 g_main_context_iteration (libglib-2.0.so.0 + 0x69942)
#5 0x00007f86d3a8e7db _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x48e7db)
#6 0x00007f86d3786336 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x186336)
#7 0x00007f86d38b0aea _ZN7QThread4execEv (libQt6Core.so.6 + 0x2b0aea)
#8 0x00007f86d47f309f n/a (libQt6DBus.so.6 + 0x3709f)
#9 0x00007f86d395825e n/a (libQt6Core.so.6 + 0x35825e)
#10 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#11 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
Stack trace of thread 40886:
#0 0x00007f86d2f3614f ioctl (libc.so.6 + 0x13614f)
#1 0x00007f86d2c34325 n/a (libddcutil.so.5 + 0x43325)
#2 0x00007f86d2c3565d n/a (libddcutil.so.5 + 0x4465d)
#3 0x00007f86d2c35e99 n/a (libddcutil.so.5 + 0x44e99)
#4 0x00007f86d2c36c73 n/a (libddcutil.so.5 + 0x45c73)
#5 0x00007f86d2c36fe9 n/a (libddcutil.so.5 + 0x45fe9)
#6 0x00007f86d2c2f357 n/a (libddcutil.so.5 + 0x3e357)
#7 0x00007f86d2c8d358 n/a (libddcutil.so.5 + 0x9c358)
#8 0x00007f86d2c8e495 n/a (libddcutil.so.5 + 0x9d495)
#9 0x00007f86d2780d29 n/a (libglib-2.0.so.0 + 0xacd29)
#10 0x00007f86d2ea80d6 n/a (libc.so.6 + 0xa80d6)
#11 0x00007f86d2f3b05c n/a (libc.so.6 + 0x13b05c)
ELF object binary architecture: AMD x86-64
GNU gdb (GDB) 16.3
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
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For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/org_kde_powerdevil...
This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.cachyos.org>
<https://debuginfod.archlinux.org>
e[?2004hEnable debuginfod for this session? (y or [n]) n
e[?2004l
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
(No debugging symbols found in /usr/lib/org_kde_powerdevil)
warning: File /usr/lib/libz.so.1.3.1.zlib-ng doesn't match build-id from core-file during file-backed mapping processing
warning: Can't open file /memfd:pulseaudio (deleted) during file-backed mapping note processing
warning: Can't open file /usr/lib/libxkbcommon.so.0.13.0 during file-backed mapping note processing
warning: Can't open file /usr/lib/libpng16.so.16.51.0 during file-backed mapping note processing
[New LWP 40887]
[New LWP 1743]
[New LWP 1747]
[New LWP 1748]
[New LWP 30868]
[New LWP 1744]
[New LWP 1715]
[New LWP 40885]
[New LWP 1749]
[New LWP 1737]
[New LWP 40886]
warning: Build-id of /usr/lib/libxkbcommon.so.0 does not match core file.
warning: Build-id of /usr/lib/libpng16.so.16 does not match core file.
warning: Build-id of /usr/lib/libz.so.1 does not match core file.
warning: Could not load shared library symbols for 3 libraries, e.g. /usr/lib/libxkbcommon.so.0.
Use the "info sharedlibrary" command to see the complete listing.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/lib/org_kde_powerdevil'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f86d2eaa0fb in pthread_kill () from /usr/lib/libc.so.6
[Current thread is 1 (Thread 0x7f8693fff6c0 (LWP 40887))]
#0 0x00007f86d2eaa0fb in pthread_kill () from /usr/lib/libc.so.6
#1 0x00007f86d2e447c8 in raise () from /usr/lib/libc.so.6
#2 0x00007f86d4b0dbd0 in KCrash::defaultCrashHandler(int) () from /usr/lib/libKF6Crash.so.6
#3 <signal handler called>
#4 0x00007f86d2eaa0fb in pthread_kill () from /usr/lib/libc.so.6
#5 0x00007f86d2e447c8 in raise () from /usr/lib/libc.so.6
#6 0x00007f86d2e2560d in abort () from /usr/lib/libc.so.6
#7 0x00007f86d2e25578 in ?? () from /usr/lib/libc.so.6
#8 0x00007f86d2e3aeb6 in __assert_fail () from /usr/lib/libc.so.6
#9 0x00007f86d2bf976d in ?? () from /usr/lib/libddcutil.so.5
#10 0x00007f86d2c99394 in ?? () from /usr/lib/libddcutil.so.5
#11 0x00007f86d2ca0dfd in ddca_open_display2 () from /usr/lib/libddcutil.so.5
#12 0x00007f86d4acdbad in ?? () from /usr/lib/libpowerdevilcore.so.2
#13 0x00007f86d37dc771 in QObject::event(QEvent*) () from /usr/lib/libQt6Core.so.6
#14 0x00007f86d377aed8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt6Core.so.6
#15 0x00007f86d377b278 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt6Core.so.6
#16 0x00007f86d3a91b80 in ?? () from /usr/lib/libQt6Core.so.6
#17 0x00007f86d273c3e9 in ?? () from /usr/lib/libglib-2.0.so.0
#18 0x00007f86d273d808 in ?? () from /usr/lib/libglib-2.0.so.0
#19 0x00007f86d273d942 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#20 0x00007f86d3a8e7db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt6Core.so.6
#21 0x00007f86d3786336 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt6Core.so.6
#22 0x00007f86d38b0aea in QThread::exec() () from /usr/lib/libQt6Core.so.6
#23 0x00007f86d395825e in ?? () from /usr/lib/libQt6Core.so.6
#24 0x00007f86d2ea80d6 in ?? () from /usr/lib/libc.so.6
#25 0x00007f86d2f3b05c in ?? () from /usr/lib/libc.so.6
meven
December 10, 2025, 7:02am
8
It might be https://bugs.kde.org/show_bug.cgi?id=512754
