Calamares Crash Issue During KDE Neon Installation

[Titouan]

Hello,

I’m currently trying to install KDE Neon (stable version: 20250504), but I’m facing a major issue when launching the Calamares installer. When I start the installer, it crashes abruptly, and I cannot proceed with the installation. Below are the error messages I get in the terminal when I run sudo calamares:

neon@neon:~$ sudo calamares
Not enabling extra modes
WARNING: Running setxkbmap against an Xwayland server
KCrash: Application '_neon.calamares' crashing... crashRecursionCounter = 2
KCrash: Application Name = _neon.calamares path = /usr/bin pid = 8996
KCrash: Arguments: /usr/bin/_neon.calamares --xdg-config 
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi

(process:8996): GLib-GIO-WARNING **: 11:39:03.666: Error reading netlink message: Error on netlink socket: Error receiving message: Bad file descriptor
failed to signal syncobj 9
Unable to start Dr. Konqi
Re-raising signal for core dump handling.
Aborted
neon@neon:~$

I’m fairly new to Linux, so I apologize in advance if I’m making a beginner mistake in my approach.

Here’s some additional information that might be useful:

• Distribution used: KDE Neon (stable version 20250504).
• Hardware: My system has two SSDs, one with Windows and another one where I want to install KDE Neon.
• Setup: I’m trying to install KDE Neon on a specific SSD (not the Windows SSD), with a bootable USB stick containing the KDE Neon ISO.

I really appreciate any help or suggestions on resolving this problem!

[claydoh]

Segmentation fault during installation on KDE Neon user Edition (30 Apr 2025)

Calamares version: calamares 3.3.14 Distro: KDE Neon 6.3 x86_64. Steps to reproduce: I was running the installation process using Calamares. The failure occurred during the opening of the Install system itself. The error message shown was: “Executable: neon PID: 2564 SIGNAL: Segmentation fault (11) Time: 30 Apr 2025 15:52:44 UTC”. Backtrace: [Please insert the backtrace from the “Developer Information” tab here.] Hardware: CPU: AMD Ryzen 5 5600X (12) @ 4.651GHz GPU: AMD ATI Radeon RX 6650 …

KDE Neon Plasma 6 - "Calamares closed unexpectedly..."

“We are sorry, Calamares closed unexpectedly…” [20250427_0610561] Had same issue with April 20th .iso Then with latest. Was able to install Fedora’s latest KDE. KDE Neon Plasma never failed me before. Tried 3 times over past week.

503600 – Installer crashes when an unformatted drive is present

And a few bug reports I missed.

A fix is in the pipeline that hopefully takes care of both calamares and KDE Partition Manager crashes.

If the drive is unpartitoned, maybe try formatting it in Windows or a live Linux session as a workaround, and also try checking your drives for errors.

[mbmalone]

I am having exactly the same Calamares issue on my Dell Latitude 5590

[Mark_Knecht]

I’m having more of less the same issue with Calamares on an old Asus G73JW. Unexpected crash. Signal: Segmentation Fault (11). This is the stable-ish Neon downloaded a couple of days ago. Like another reporter this machine has two SSDs. Both are formatted. I was intending to install Neon on the second one which is just data but I never get close to making any choices.

[Mark_Knecht]

neon@neon:~$ sudo calamares
Not enabling extra modes
WARNING: Running setxkbmap against an Xwayland server
KCrash: Application ‘_neon.calamares’ crashing… crashRecursionCounter = 2
KCrash: Application Name = _neon.calamares path = /usr/bin pid = 4897
KCrash: Arguments: /usr/bin/_neon.calamares --xdg-config
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi

(process:4897): GLib-GIO-WARNING **: 16:32:41.530: Error reading netlink message: Error on netlink socket: Error receiving message: Bad file descriptor
nouveau: kernel rejected pushbuf: Bad file descriptor
nouveau: ch14: krec 0 pushes 1 bufs 9 relocs 0
nouveau: ch14: buf 00000000 0000000c 00000004 00000004 00000000 0x7931880bb000 0x1180000 0x80000
nouveau: ch14: buf 00000001 00000011 00000002 00000002 00000000 (nil) 0x1600000 0x280000
nouveau: ch14: buf 00000002 00000013 00000002 00000002 00000000 (nil) 0x25a000 0x1000
nouveau: ch14: buf 00000003 00000008 00000002 00000002 00000000 (nil) 0x2e0000 0xe0000
nouveau: ch14: buf 00000004 0000000b 00000002 00000002 00000000 (nil) 0x10e0000 0x20000
nouveau: ch14: buf 00000005 0000000a 00000002 00000002 00000002 (nil) 0xfe0000 0x100000
nouveau: ch14: buf 00000006 00000006 00000004 00000000 00000004 0x7931aab49000 0x215000 0x1000
nouveau: ch14: buf 00000007 00000019 00000002 00000000 00000002 (nil) 0x1d20000 0x280000
nouveau: ch14: buf 00000008 00000018 00000004 00000004 00000004 (nil) 0x1145000 0x1000
nouveau: ch14: psh 00000000 0000003598 0000003634
[0x00000000] HDR 200203fd subch 0 NINC
mthd 0ff4 NV9097_SET_SURFACE_CLIP_HORIZONTAL
.X = (0x0)
.WIDTH = (0x400)
mthd 0ff8 NV9097_SET_SURFACE_CLIP_VERTICAL
.Y = (0x0)
.HEIGHT = (0x208)

[0x00000003] HDR 20090200 subch 0 NINC
mthd 0800 NV9097_SET_COLOR_TARGET_A(0)
.OFFSET_UPPER = (0x0)
mthd 0804 NV9097_SET_COLOR_TARGET_B(0)
.OFFSET_LOWER = (0x1d20000)
mthd 0808 NV9097_SET_COLOR_TARGET_WIDTH(0)
.V = (0x400)
mthd 080c NV9097_SET_COLOR_TARGET_HEIGHT(0)
.V = (0x208)
mthd 0810 NV9097_SET_COLOR_TARGET_FORMAT(0)
.V = X8R8G8B8
mthd 0814 NV9097_SET_COLOR_TARGET_MEMORY(0)
.BLOCK_WIDTH = ONE_GOB
.BLOCK_HEIGHT = SIXTEEN_GOBS
.BLOCK_DEPTH = ONE_GOB
.LAYOUT = BLOCKLINEAR
.THIRD_DIMENSION_CONTROL = THIRD_DIMENSION_DEFINES_ARRAY_SIZE
mthd 0818 NV9097_SET_COLOR_TARGET_THIRD_DIMENSION(0)
.V = (0x1)
mthd 081c NV9097_SET_COLOR_TARGET_ARRAY_PITCH(0)
.V = (0x0)
mthd 0820 NV9097_SET_COLOR_TARGET_LAYER(0)
.OFFSET = (0x0)

[0x0000000d] HDR 2001054e subch 0 NINC
mthd 1538 NV9097_SET_ZT_SELECT
.TARGET_COUNT = (0x0)

[0x0000000f] HDR 20010487 subch 0 NINC
mthd 121c NV9097_SET_CT_SELECT
.TARGET_COUNT = (0x1)
.TARGET0 = (0x0)
.TARGET1 = (0x1)
.TARGET2 = (0x2)
.TARGET3 = (0x3)
.TARGET4 = (0x4)
.TARGET5 = (0x5)
.TARGET6 = (0x6)
.TARGET7 = (0x7)

[0x00000011] HDR 80000574 subch 0 IMMD
mthd 15d0 NV9097_SET_ANTI_ALIAS
.SAMPLES = MODE_1X1

[0x00000012] HDR 800101d5 subch 0 IMMD
mthd 0754 NV9097_SET_HYBRID_ANTI_ALIAS_CONTROL
.PASSES = (0x1)
.CENTROID = PER_FRAGMENT

[0x00000013] HDR 200308e0 subch 0 NINC
mthd 2380 NV9097_SET_CONSTANT_BUFFER_SELECTOR_A
.SIZE = (0x10000)
mthd 2384 NV9097_SET_CONSTANT_BUFFER_SELECTOR_B
.ADDRESS_UPPER = (0x0)
mthd 2388 NV9097_SET_CONSTANT_BUFFER_SELECTOR_C
.ADDRESS_LOWER = (0x380000)

[0x00000017] HDR a00308e3 subch 0 1INC
mthd 238c NV9097_LOAD_CONSTANT_BUFFER_OFFSET
.V = (0x1a0)
mthd 2390 NV9097_LOAD_CONSTANT_BUFFER(0)
.V = (0x3f000000)
mthd 2390 NV9097_LOAD_CONSTANT_BUFFER(0)
.V = (0x3f000000)

[0x0000001b] HDR 20040360 subch 0 NINC
mthd 0d80 NV9097_SET_COLOR_CLEAR_VALUE(0)
.V = (0x0)
mthd 0d84 NV9097_SET_COLOR_CLEAR_VALUE(1)
.V = (0x0)
mthd 0d88 NV9097_SET_COLOR_CLEAR_VALUE(2)
.V = (0x0)
mthd 0d8c NV9097_SET_COLOR_CLEAR_VALUE(3)
.V = (0x3f800000)

[0x00000020] HDR 20010674 subch 0 NINC
mthd 19d0 NV9097_CLEAR_SURFACE
.Z_ENABLE = FALSE
.STENCIL_ENABLE = FALSE
.R_ENABLE = TRUE
.G_ENABLE = TRUE
.B_ENABLE = TRUE
.A_ENABLE = TRUE
.MRT_SELECT = (0x0)
.RT_ARRAY_INDEX = (0x0)

[0x00000022] HDR 200406c0 subch 0 NINC
mthd 1b00 NV9097_SET_REPORT_SEMAPHORE_A
.OFFSET_UPPER = (0x0)
mthd 1b04 NV9097_SET_REPORT_SEMAPHORE_B
.OFFSET_LOWER = (0x215000)
mthd 1b08 NV9097_SET_REPORT_SEMAPHORE_C
.PAYLOAD = (0x4a)
mthd 1b0c NV9097_SET_REPORT_SEMAPHORE_D
.OPERATION = RELEASE
.RELEASE = AFTER_ALL_PRECEEDING_WRITES_COMPLETE
.ACQUIRE = BEFORE_ANY_FOLLOWING_WRITES_START
.PIPELINE_LOCATION = ALL
.COMPARISON = EQ
.AWAKEN_ENABLE = FALSE
.REPORT = NONE
.STRUCTURE_SIZE = ONE_WORD
.SUB_REPORT = (0x0)
.REPORT_DWORD_NUMBER = (0x0)
.FLUSH_DISABLE = FALSE

nouveau: kernel rejected pushbuf: Bad file descriptor
nouveau: ch14: krec 0 pushes 1 bufs 0 relocs 0
Unable to start Dr. Konqi
Re-raising signal for core dump handling.
Segmentation fault
neon@neon:~$

[xc8]

same issue here, but on KDE Neon mobile- the darn thing works like a charm on my tablet with the exception that it can’t be installed! , mind I used the ISO with date: 20250504 , not sure if i need to wait for a newer version of that ..? thx !

[xc8]

Calamares crash even with newer (20250511) Neon mobile ISO.

It is weird that the crash is happening when I m trying to install on a tablet, but works under … VirtualBox !

Application: Calamares (_neon), signal: Aborted

[KCrash Handler]
#4 __pthread_kill_implementation (no_tid=0, signo=6, threadid=) at ./nptl/pthread_kill.c:44
#5 __pthread_kill_internal (signo=6, threadid=) at ./nptl/pthread_kill.c:78
#6 __GI___pthread_kill (threadid=, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
#7 0x000079ad27ab427e in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#8 0x000079ad27a978ff in __GI_abort () at ./stdlib/abort.c:79
#9 0x000079ad284537d9 in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#10 0x000079ad28454ac7 in QMessageLogger::fatal(char const*, …) const () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#11 0x000079ad2843f0d1 in qt_assert(char const*, char const*, int) () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#12 0x00006445fe75f9e3 in ?? ()
#13 0x00006445fe7693b7 in CalamaresWindow::CalamaresWindow(QWidget*) ()
#14 0x00006445fe769b62 in CalamaresApplication::initView() ()
#15 0x00006445fe75f5cc in ?? ()
#16 0x00006445fe7614aa in ?? ()
#17 0x00006445fe7614fa in ?? ()
#18 0x000079ad283a6a99 in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#19 0x000079ad2a643ef4 in Calamares::ModuleManager::initDone() () from /lib/x86_64-linux-gnu/libcalamaresui.so.3.3
#20 0x000079ad2a64f298 in ?? () from /lib/x86_64-linux-gnu/libcalamaresui.so.3.3
#21 0x000079ad2a650a6b in ?? () from /lib/x86_64-linux-gnu/libcalamaresui.so.3.3
#22 0x000079ad2a650abb in ?? () from /lib/x86_64-linux-gnu/libcalamaresui.so.3.3
#23 0x000079ad283a6a99 in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#24 0x000079ad28346d4d in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#25 0x000079ad2832fae6 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#26 0x000079ad2a39a51d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt6Widgets.so.6
#27 0x000079ad283dfdd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#28 0x000079ad282be087 in QTimerInfoList::activateTimers() () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#29 0x000079ad28190d99 in ?? () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#30 0x000079ad268575b5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x000079ad268b6717 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x000079ad26856a53 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x000079ad2818fb3f in QEventDispatcherGlib::processEvents(QFlagsQEventLoop::ProcessEventsFlag) () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#34 0x000079ad283ea4bb in QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#35 0x000079ad283e305f in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt6Core.so.6
#36 0x00006445fe76bbd5 in main ()
[Inferior 1 (process 2641) detached]

[xc8]

oops! the issue is because the display scaling !! if I slide it from 145 to 100% then the installer
(calamares) does not crash!