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#1 2025-07-03 14:55:31

plimin
Member
Registered: 2025-07-03
Posts: 2

Kwin_wayland crashing

Greetings. A few days ago, KDE Plasma began crashing. After logging in, the screen goes black and the desktop flashes on screen around 3 times before displaying a solid black screen. Sometimes it begins immediately, other times it takes a few minutes. Firefox crashes with it, but some other programs like dolphin don’t. Using the shortcut to open the terminal works, and I can use it to open firefox and stuff. Checking KSystemLog shows that Kwin_wayland is where the issue lies.

I am using an nvidia RTX 5080 with one monitor and the nvidia-open-dkms drivers.
I have “nvidia_drm.modeset=1” and “nvidia.NVreg_EnableGpuFirmware=0” at the end of the “options” line within /boot/loader/entries/arch.conf.
I have downloaded egl-wayland.
I have MODULES=(nvidia nvidia_modeset nvidia_uvm nvidia_drm) in /etc/mkinitcpio.conf.
I have “GBM_BACKEND=nvidia-drm” and “__GLX_VENDOR_LIBRARY_NAME=nvidia” in /etc/environment.
I have deleted ~/.config/kwinoutputconfig.json.
I’ve added myself to the “render” and “video” groups.
Both

sudo cat /sys/module/nvidia_drm/parameters/modeset
sudo cat /sys/module/nvidia_drm/parameters/fbdev

return Y.

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#2 2025-07-03 22:14:42

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,714

Re: Kwin_wayland crashing

Checking KSystemLog shows that Kwin_wayland is where the issue lies.

Please don't paraphrase, https://bbs.archlinux.org/viewtopic.php?id=57855
Also

ome other programs like dolphin don’t

if you can still see the dolphin window it's unlikely that the compositor has crashed.

https://wiki.archlinux.org/title/Core_d … _core_dump
Also please post your complete system journal for the boot: 

sudo journalctl -b | curl -F 'file=@-' 0x0.st

Is FF an xwayland client, https://wiki.archlinux.org/title/Waylan … plications ?

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

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#3 2025-07-04 03:29:32

plimin
Member
Registered: 2025-07-03
Posts: 2

Re: Kwin_wayland crashing

Please don't paraphrase

Alright, here's the whole thing from this session.

Process 3220 (kwin_wayland) of user 1000 dumped core.

Stack trace of thread 3220:
#0  0x00007faf8357d797 n/a (libKF6ConfigCore.so.6 + 0x60797)
#1  0x00007faf8357da72 _ZN14KConfigWatcher11qt_metacallEN11QMetaObject4CallEiPPv (libKF6ConfigCore.so.6 + 0x60a72)
#2  0x00007faf833b9b09 n/a (libQt6DBus.so.6 + 0x42b09)
#3  0x00007faf823c0e34 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1c0e34)
#4  0x00007faf83701c70 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x101c70)
#5  0x00007faf82368118 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x168118)
#6  0x00007faf823684fb _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x1684fb)
#7  0x00007faf82526a37 _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x326a37)
#8  0x00007faf8311ad33 _ZN23QUnixEventDispatcherQPA13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Gui.so.6 + 0x71ad33)
#9  0x00007faf823744b6 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x1744b6)
#10 0x00007faf8236c7c1 _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x16c7c1)
#11 0x000055deeefeece6 n/a (/usr/bin/kwin_wayland + 0x40ce6)
#12 0x00007faf81c376b5 n/a (libc.so.6 + 0x276b5)
#13 0x00007faf81c37769 __libc_start_main (libc.so.6 + 0x27769)
#14 0x000055deeeff5275 n/a (/usr/bin/kwin_wayland + 0x47275)

Stack trace of thread 3262:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca2024 n/a (libc.so.6 + 0x92024)
#3  0x00007faf81d1c5a6 ppoll (libc.so.6 + 0x10c5a6)
#4  0x00007faf810d6e04 n/a (libglib-2.0.so.0 + 0x5fe04)
#5  0x00007faf810d6ee5 g_main_context_iteration (libglib-2.0.so.0 + 0x5fee5)
#6  0x00007faf8263c5e2 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x43c5e2)
#7  0x00007faf823744b6 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x1744b6)
#8  0x00007faf8248e054 _ZN7QThread3runEv (libQt6Core.so.6 + 0x28e054)
#9  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#10 0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#11 0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3223:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca2024 n/a (libc.so.6 + 0x92024)
#3  0x00007faf81d1c5a6 ppoll (libc.so.6 + 0x10c5a6)
#4  0x00007faf810d6e04 n/a (libglib-2.0.so.0 + 0x5fe04)
#5  0x00007faf810d6ee5 g_main_context_iteration (libglib-2.0.so.0 + 0x5fee5)
#6  0x00007faf8263c5e2 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x43c5e2)
#7  0x00007faf823744b6 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x1744b6)
#8  0x00007faf824873c6 _ZN7QThread4execEv (libQt6Core.so.6 + 0x2873c6)
#9  0x00007faf833aedae n/a (libQt6DBus.so.6 + 0x37dae)
#10 0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#11 0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#12 0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3234:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca5152 pthread_cond_clockwait (libc.so.6 + 0x95152)
#4  0x00007faf85070bbc n/a (libkwin.so.6 + 0x470bbc)
#5  0x00007faf8507190a n/a (libkwin.so.6 + 0x47190a)
#6  0x00007faf8506b9c6 n/a (libkwin.so.6 + 0x46b9c6)
#7  0x00007faf81caacb4 n/a (libc.so.6 + 0x9acb4)
#8  0x00007faf81caad29 pthread_once (libc.so.6 + 0x9ad29)
#9  0x00007faf8506c45f n/a (libkwin.so.6 + 0x46c45f)
#10 0x00007faf82487f55 n/a (libQt6Core.so.6 + 0x287f55)
#11 0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#12 0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#13 0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3280:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca4f28 pthread_cond_timedwait (libc.so.6 + 0x94f28)
#4  0x00007faf8252dd25 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x32dd25)
#5  0x00007faf82527c40 n/a (libQt6Core.so.6 + 0x327c40)
#6  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#7  0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#8  0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3263:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca4f28 pthread_cond_timedwait (libc.so.6 + 0x94f28)
#4  0x00007faf8252dd25 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x32dd25)
#5  0x00007faf82527c40 n/a (libQt6Core.so.6 + 0x327c40)
#6  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#7  0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#8  0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3281:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca4f28 pthread_cond_timedwait (libc.so.6 + 0x94f28)
#4  0x00007faf8252dd25 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x32dd25)
#5  0x00007faf82527c40 n/a (libQt6Core.so.6 + 0x327c40)
#6  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#7  0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#8  0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3279:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca4f28 pthread_cond_timedwait (libc.so.6 + 0x94f28)
#4  0x00007faf8252dd25 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x32dd25)
#5  0x00007faf82527c40 n/a (libQt6Core.so.6 + 0x327c40)
#6  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#7  0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#8  0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3282:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca4f28 pthread_cond_timedwait (libc.so.6 + 0x94f28)
#4  0x00007faf8252dd25 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x32dd25)
#5  0x00007faf82527c40 n/a (libQt6Core.so.6 + 0x327c40)
#6  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#7  0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#8  0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3236:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca2024 n/a (libc.so.6 + 0x92024)
#3  0x00007faf81d1c5a6 ppoll (libc.so.6 + 0x10c5a6)
#4  0x00007faf810d6e04 n/a (libglib-2.0.so.0 + 0x5fe04)
#5  0x00007faf810d6ee5 g_main_context_iteration (libglib-2.0.so.0 + 0x5fee5)
#6  0x00007faf8263c5e2 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x43c5e2)
#7  0x00007faf823744b6 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x1744b6)
#8  0x00007faf8248e054 _ZN7QThread3runEv (libQt6Core.so.6 + 0x28e054)
#9  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#10 0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#11 0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)

Stack trace of thread 3302:
#0  0x00007faf81cade22 n/a (libc.so.6 + 0x9de22)
#1  0x00007faf81ca1fda n/a (libc.so.6 + 0x91fda)
#2  0x00007faf81ca264c n/a (libc.so.6 + 0x9264c)
#3  0x00007faf81ca4f28 pthread_cond_timedwait (libc.so.6 + 0x94f28)
#4  0x00007faf8252dd25 _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x32dd25)
#5  0x00007faf82527c40 n/a (libQt6Core.so.6 + 0x327c40)
#6  0x00007faf8251ee69 n/a (libQt6Core.so.6 + 0x31ee69)
#7  0x00007faf81ca57eb n/a (libc.so.6 + 0x957eb)
#8  0x00007faf81d2918c n/a (libc.so.6 + 0x11918c)
ELF object binary architecture: AMD x86-64

Also please post your complete system journal for the boot:

https://0x0.st/80tv.txt

Is FF an xwayland client, https://wiki.archlinux.org/title/Waylan … plications ?

Both extramaus and xorg-xeyes say no.
Thanks for responding.

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#4 2025-07-04 07:08:59

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,714

Re: Kwin_wayland crashing

kdeconnect and DiscoverNotifier hit the same curb…
Seems triggered by https://wiki.archlinux.org/title/Xsettingsd - kwin_wayland then whats to read some config and KF6Config crashes - https://wiki.archlinux.org/title/Debuginfod might hold a better clue about what's wrong (aside that reading a config is input handling and needs to be more robust against bogus stuff, so a KF6Config bug)
But you also want to check what's in those configs - maybe something already looks bogus enough.

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

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#5 2025-07-17 01:58:50

IndyGibb
Member
Registered: 2025-07-17
Posts: 2

Re: Kwin_wayland crashing

OP did you ever fix the issue? I think I'm having one that is very similar.

journal from today:
https://paste.ubuntu.com/p/Pkmx3kSqsv/

I'm also using KDE and Wayland. If there's any other information that would be helpful please let me know.

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#6 2025-07-17 06:24:50

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 73,714

Re: Kwin_wayland crashing

Please don't use ubuntu's paste service that requires me to log in w/ my ubuntu account… to access the plain text.
The journal covers multiple boots, but none of them shut down.
Don't reboot w/ the power button, certainly not if only kwin crashes.
In doubt frenetically press ctrl+alt+del or use the https://wiki.archlinux.org/title/Keyboa … el_(SysRq) (nb you'll have to explicitly enabled that before any crash)

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

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#7 2025-07-17 13:42:04

IndyGibb
Member
Registered: 2025-07-17
Posts: 2

Re: Kwin_wayland crashing

I apologize, I'll find a better way to post logs and such. I set up the SysRq keymappings so I can use that to restart. I may also create a separate post because I'm feeling less sure that this is the same issue, since OP's things are crashing only a few minutes in, where my system is having issues usually after a couple hours. Thank you for your help.

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