Sddm-greeter - dumped core

cluster · December 15, 2020, 10:26am

Operating System: EndeavourOS
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Kernel Version: 5.9.14-zen1-1-zen
OS Type: 64-bit
Processors: 8 × AMD FX™-8350 Eight-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: GeForce GT 630/PCIe/SSE2

can anyone confirm this error message?

15.12.20 07:57	systemd-coredump	Process 1007 (sddm-greeter) of user 973 dumped core.

Stack trace of thread 1007:
#0  0x00007f2ab69067a7 n/a (libQt5Qml.so.5 + 0x2d67a7)
#1  0x00007f2ab66d5cef n/a (libQt5Qml.so.5 + 0xa5cef)
#2  0x00007f2ab66d5f83 n/a (libQt5Qml.so.5 + 0xa5f83)
#3  0x00007f2ab66d6bd6 _ZN3QV413MemoryManager5sweepEbPFvPKcE (libQt5Qml.so.5 + 0xa6bd6)
#4  0x00007f2ab66d771f n/a (libQt5Qml.so.5 + 0xa771f)
#5  0x00007f2ab66d942a _ZN3QV413MemoryManager9allocDataEm (libQt5Qml.so.5 + 0xa942a)
#6  0x00007f2ab66d9484 _ZN3QV413MemoryManager25allocObjectWithMemberDataEPKNS_6VTableEj (libQt5Qml.so.5 + 0xa9484)
#7  0x00007f2ab6741fad _ZN3QV415ExecutionEngine18newTypeErrorObjectERK7QString (libQt5Qml.so.5 + 0x111fad)
#8  0x00007f2ab67494b3 _ZN3QV415ExecutionEngine14throwTypeErrorERK7QString (libQt5Qml.so.5 + 0x1194b3)
#9  0x00007f2ab6757fe7 _ZN3QV46Lookup22resolvePrimitiveGetterEPNS_15ExecutionEngineERKNS_5ValueE (libQt5Qml.so.5 + 0x127fe7)
#10 0x00007f2a4f6d019f n/a (n/a + 0x0)
#11 0x00007f2ab67e45c9 n/a (libQt5Qml.so.5 + 0x1b45c9)
#12 0x00007f2ab677ed2e _ZN3QV48Function4callEPKNS_5ValueES3_iPKNS_16ExecutionContextE (libQt5Qml.so.5 + 0x14ed2e)
#13 0x00007f2ab68fa916 _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5 + 0x2ca916)
#14 0x00007f2ab68ffc15 _ZN11QQmlBinding8evaluateEPb (libQt5Qml.so.5 + 0x2cfc15)
#15 0x00007f2ab6903b78 n/a (libQt5Qml.so.5 + 0x2d3b78)
#16 0x00007f2ab6901914 _ZN11QQmlBinding6updateE6QFlagsIN16QQmlPropertyData9WriteFlagEE (libQt5Qml.so.5 + 0x2d1914)
#17 0x00007f2ab68de00d _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5 + 0x2ae00d)
#18 0x00007f2ab5b6c955 n/a (libQt5Core.so.5 + 0x2ec955)
#19 0x00007f2ab5b6cdd6 n/a (libQt5Core.so.5 + 0x2ecdd6)
#20 0x00007f2ab5b66020 _ZN7QObject9destroyedEPS_ (libQt5Core.so.5 + 0x2e6020)
#21 0x00007f2ab5b6b0f7 _ZN7QObjectD2Ev (libQt5Core.so.5 + 0x2eb0f7)
#22 0x00007f2ab54efdb7 __run_exit_handlers (libc.so.6 + 0x3fdb7)
#23 0x00007f2ab54eff5e exit (libc.so.6 + 0x3ff5e)
#24 0x00007f2ab54d8159 __libc_start_main (libc.so.6 + 0x28159)
#25 0x0000556027a5f07e _start (sddm-greeter + 0x1a07e)

Stack trace of thread 1094:
#0  0x00007f2ab55a7b7b __select (libc.so.6 + 0xf7b7b)
#1  0x00007f2aaacb0172 n/a (libnvidia-glcore.so.455.45.01 + 0x1120172)
#2  0x00007f2aaacaafcc n/a (libnvidia-glcore.so.455.45.01 + 0x111afcc)
#3  0x00007f2ab50513e9 start_thread (libpthread.so.0 + 0x93e9)
#4  0x00007f2ab55b0293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1092:
#0  0x00007f2ab55a546f __poll (libc.so.6 + 0xf546f)
#1  0x00007f2ab44867af n/a (libglib-2.0.so.0 + 0xa67af)
#2  0x00007f2ab4431121 g_main_context_iteration (libglib-2.0.so.0 + 0x51121)
#3  0x00007f2ab5b8e6e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007f2ab5b343fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007f2ab594cd22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007f2ab693b5a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
#7  0x00007f2ab594df0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007f2ab50513e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007f2ab55b0293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1011:
#0  0x00007f2ab55a546f __poll (libc.so.6 + 0xf546f)
#1  0x00007f2ab44867af n/a (libglib-2.0.so.0 + 0xa67af)
#2  0x00007f2ab4431121 g_main_context_iteration (libglib-2.0.so.0 + 0x51121)
#3  0x00007f2ab5b8e6e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007f2ab5b343fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007f2ab594cd22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007f2ab693b5a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
#7  0x00007f2ab594df0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007f2ab50513e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007f2ab55b0293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1009:
#0  0x00007f2ab55a546f __poll (libc.so.6 + 0xf546f)
#1  0x00007f2ab44867af n/a (libglib-2.0.so.0 + 0xa67af)
#2  0x00007f2ab4431121 g_main_context_iteration (libglib-2.0.so.0 + 0x51121)
#3  0x00007f2ab5b8e6e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007f2ab5b343fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007f2ab594cd22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007f2ab1dff098 n/a (libQt5DBus.so.5 + 0x17098)
#7  0x00007f2ab594df0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007f2ab50513e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007f2ab55b0293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1082:
#0  0x00007f2ab55a546f __poll (libc.so.6 + 0xf546f)
#1  0x00007f2ab44867af n/a (libglib-2.0.so.0 + 0xa67af)
#2  0x00007f2ab4431121 g_main_context_iteration (libglib-2.0.so.0 + 0x51121)
#3  0x00007f2ab5b8e6e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007f2ab5b343fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007f2ab594cd22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007f2ab6cdf1eb n/a (libQt5Quick.so.5 + 0x1471eb)
#7  0x00007f2ab594df0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007f2ab50513e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007f2ab55b0293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1091:
#0  0x00007f2ab55a546f __poll (libc.so.6 + 0xf546f)
#1  0x00007f2ab44867af n/a (libglib-2.0.so.0 + 0xa67af)
#2  0x00007f2ab4431121 g_main_context_iteration (libglib-2.0.so.0 + 0x51121)
#3  0x00007f2ab5b8e6e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007f2ab5b343fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007f2ab594cd22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007f2ab693b5a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
#7  0x00007f2ab594df0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007f2ab50513e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007f2ab55b0293 __clone (libc.so.6 + 0x100293)

15.12.20 07:57	sddm	Auth: sddm-helper exited with 11

edit

permission issue w/ state.conf?

ls -l /var/lib/sddm/
drwxr-xr-x sddm sddm *
...
-rw-r--r-- 1 root root  279  2. Okt 15:23 state.conf

joekamprad · December 15, 2020, 3:53pm

it happens currently that sddm is buggy…
but yours could be also something else, like nvidia driver not updated or system ?
You could try simple using another DM if this is not the case…

cluster · December 15, 2020, 3:57pm

everything is up2date …
using nvidia-dkms (nvidia-455.45.01)

manuel · December 15, 2020, 4:39pm

I’m using sddm successfully on several machines.
One potential reason can be that some AUR package conflicts with sddm.

So you could check which AUR packages you have with:

  pacman -Qm

cluster · December 15, 2020, 4:53pm

pacman -Qm
archlinux-appstream-data-pamac 20201020-1
google-chrome 87.0.4280.88-1
imagewriter 1.10.1432200249.1d253d9-15
linvstmanager-git 1.1.1-2
pamac-aur 9.5.12-1
pamac-tray-appindicator 9.5.12-1
r8168-dkms 8.048.03-1
reaper-bin 6.18-1
samsung-ml1640 3.00.65-3
steinberg-asio-sdk 2.3.3-1
timeshift 20.11.1+3+g08d0e59-2
wineasio 1.0.0-1

cluster · December 15, 2020, 6:05pm

I use the realtime-privileges package, maybe something conflicts w/ the pam stuff for sddm?

manuel · December 15, 2020, 6:27pm

Hard to say because I don’t use that.
Anyway, as sddm is known to cause issues sometimes, I’d also recommend trying another DM, e.g. lightdm. The Welcome app includes a button for changing the DM, or you can change it easily on the command line too with systemctl. Our wiki also provides help for DMs.

xircon · December 15, 2020, 6:28pm

Have you changed the theme? A faulty theme could cause this.

cluster · December 15, 2020, 6:31pm

default breeze theme, I have set just another background image (login screen)

cluster · December 19, 2020, 10:58am

It seems the default breeze sddm theme is broken, if I use the elarium theme on next reboot there is no error message anymore …
How can I completely purge and reinstall the original breeze sddm theme?

19.12.20 11:49	systemd-coredump	Process 1006 (sddm-greeter) of user 973 dumped core.

Stack trace of thread 1006:
#0  0x00007fea80f5e7a7 n/a (libQt5Qml.so.5 + 0x2d67a7)
#1  0x00007fea80d2dcef n/a (libQt5Qml.so.5 + 0xa5cef)
#2  0x00007fea80d2df83 n/a (libQt5Qml.so.5 + 0xa5f83)
#3  0x00007fea80d2ebd6 _ZN3QV413MemoryManager5sweepEbPFvPKcE (libQt5Qml.so.5 + 0xa6bd6)
#4  0x00007fea80d2f71f n/a (libQt5Qml.so.5 + 0xa771f)
#5  0x00007fea80d3142a _ZN3QV413MemoryManager9allocDataEm (libQt5Qml.so.5 + 0xa942a)
#6  0x00007fea80d31484 _ZN3QV413MemoryManager25allocObjectWithMemberDataEPKNS_6VTableEj (libQt5Qml.so.5 + 0xa9484)
#7  0x00007fea80d99fad _ZN3QV415ExecutionEngine18newTypeErrorObjectERK7QString (libQt5Qml.so.5 + 0x111fad)
#8  0x00007fea80da14b3 _ZN3QV415ExecutionEngine14throwTypeErrorERK7QString (libQt5Qml.so.5 + 0x1194b3)
#9  0x00007fea80daffe7 _ZN3QV46Lookup22resolvePrimitiveGetterEPNS_15ExecutionEngineERKNS_5ValueE (libQt5Qml.so.5 + 0x127fe7)
#10 0x00007fea1d8e890f n/a (n/a + 0x0)
#11 0x00007fea80e3c5c9 n/a (libQt5Qml.so.5 + 0x1b45c9)
#12 0x00007fea80dd6d2e _ZN3QV48Function4callEPKNS_5ValueES3_iPKNS_16ExecutionContextE (libQt5Qml.so.5 + 0x14ed2e)
#13 0x00007fea80f52916 _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5 + 0x2ca916)
#14 0x00007fea80f57c15 _ZN11QQmlBinding8evaluateEPb (libQt5Qml.so.5 + 0x2cfc15)
#15 0x00007fea80f5bb78 n/a (libQt5Qml.so.5 + 0x2d3b78)
#16 0x00007fea80f59914 _ZN11QQmlBinding6updateE6QFlagsIN16QQmlPropertyData9WriteFlagEE (libQt5Qml.so.5 + 0x2d1914)
#17 0x00007fea80f3600d _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5 + 0x2ae00d)
#18 0x00007fea801c4955 n/a (libQt5Core.so.5 + 0x2ec955)
#19 0x00007fea801c4dd6 n/a (libQt5Core.so.5 + 0x2ecdd6)
#20 0x00007fea801be020 _ZN7QObject9destroyedEPS_ (libQt5Core.so.5 + 0x2e6020)
#21 0x00007fea801c30f7 _ZN7QObjectD2Ev (libQt5Core.so.5 + 0x2eb0f7)
#22 0x00007fea7fb47db7 __run_exit_handlers (libc.so.6 + 0x3fdb7)
#23 0x00007fea7fb47f5e exit (libc.so.6 + 0x3ff5e)
#24 0x00007fea7fb30159 __libc_start_main (libc.so.6 + 0x28159)
#25 0x00005630a869207e _start (sddm-greeter + 0x1a07e)

Stack trace of thread 1008:
#0  0x00007fea7fbfd46f __poll (libc.so.6 + 0xf546f)
#1  0x00007fea7eade93f n/a (libglib-2.0.so.0 + 0xa693f)
#2  0x00007fea7ea892b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
#3  0x00007fea801e66e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007fea8018c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007fea7ffa4d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007fea7c457098 n/a (libQt5DBus.so.5 + 0x17098)
#7  0x00007fea7ffa5f0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007fea7f6a93e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007fea7fc08293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1010:
#0  0x00007fea7fbfd46f __poll (libc.so.6 + 0xf546f)
#1  0x00007fea7eade93f n/a (libglib-2.0.so.0 + 0xa693f)
#2  0x00007fea7ea892b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
#3  0x00007fea801e66e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007fea8018c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007fea7ffa4d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007fea80f935a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
#7  0x00007fea7ffa5f0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007fea7f6a93e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007fea7fc08293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1081:
#0  0x00007fea7fbfd46f __poll (libc.so.6 + 0xf546f)
#1  0x00007fea7eade93f n/a (libglib-2.0.so.0 + 0xa693f)
#2  0x00007fea7ea892b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
#3  0x00007fea801e66e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007fea8018c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007fea7ffa4d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007fea813371eb n/a (libQt5Quick.so.5 + 0x1471eb)
#7  0x00007fea7ffa5f0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007fea7f6a93e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007fea7fc08293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1090:
#0  0x00007fea7fbfd46f __poll (libc.so.6 + 0xf546f)
#1  0x00007fea7eade93f n/a (libglib-2.0.so.0 + 0xa693f)
#2  0x00007fea7ea892b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
#3  0x00007fea801e66e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007fea8018c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007fea7ffa4d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007fea80f935a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
#7  0x00007fea7ffa5f0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007fea7f6a93e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007fea7fc08293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1091:
#0  0x00007fea7fbfd46f __poll (libc.so.6 + 0xf546f)
#1  0x00007fea7eade93f n/a (libglib-2.0.so.0 + 0xa693f)
#2  0x00007fea7ea892b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
#3  0x00007fea801e66e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
#4  0x00007fea8018c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
#5  0x00007fea7ffa4d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
#6  0x00007fea80f935a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
#7  0x00007fea7ffa5f0f n/a (libQt5Core.so.5 + 0xcdf0f)
#8  0x00007fea7f6a93e9 start_thread (libpthread.so.0 + 0x93e9)
#9  0x00007fea7fc08293 __clone (libc.so.6 + 0x100293)

Stack trace of thread 1093:
#0  0x00007fea7fbffb7b __select (libc.so.6 + 0xf7b7b)
#1  0x00007fea79940172 n/a (libnvidia-glcore.so.455.45.01 + 0x1120172)
#2  0x00007fea7993afcc n/a (libnvidia-glcore.so.455.45.01 + 0x111afcc)
#3  0x00007fea7f6a93e9 start_thread (libpthread.so.0 + 0x93e9)
#4  0x00007fea7fc08293 __clone (libc.so.6 + 0x100293)

cluster · December 19, 2020, 4:27pm

yep, default EOS breeze SDDM theme is broken or outdated, I have installed the SDDM Monochrome theme, it works flawlessly.

joekamprad · December 22, 2020, 1:28pm

i will check this now…

joekamprad · December 22, 2020, 3:19pm

is not changed from our side, and I can not reproduce crashing.
The only thing we do is to set the default config for sddm:
https://github.com/endeavouros-team/EndeavourOS-archiso/blob/master/airootfs/etc/sddm.conf.d/kde_settings.conf

cluster · December 22, 2020, 3:43pm

thanks for your investigation, maybe latest sddm upgrade has solved this problem, I will test it w/ default sddm theme later
[2020-12-21T14:26:25+0100] [ALPM] upgraded sddm (0.19.0-2 -> 0.19.0-3)

joekamprad · December 22, 2020, 5:18pm

i forget to mention that, it could be the reason

cluster · December 22, 2020, 6:14pm

strange, it works fine with any other sddm theme, currently I am using and keep the sddm monochrome theme

maybe something was not deleted in the default theme folder at some point, something obsolete stuff …
when I boot with the default breeze sddm theme, I get an error message again

Dez 22 18:46:20 mycomputer systemd-udevd[335]: could not read from '/sys/module/pcc_cpufreq/initstate': No such device
Dez 22 18:46:34 mycomputer systemd-coredump[1108]: Process 1003 (sddm-greeter) of user 973 dumped core.
                                                 
                                                 Stack trace of thread 1003:
                                                 #0  0x00007fafc9cfe7a7 n/a (libQt5Qml.so.5 + 0x2d67a7)
                                                 #1  0x00007fafc9acdcef n/a (libQt5Qml.so.5 + 0xa5cef)
                                                 #2  0x00007fafc9acdf83 n/a (libQt5Qml.so.5 + 0xa5f83)
                                                 #3  0x00007fafc9acebd6 _ZN3QV413MemoryManager5sweepEbPFvPKcE (libQt5Qml.so.5 + 0xa6bd6)
                                                 #4  0x00007fafc9acf71f n/a (libQt5Qml.so.5 + 0xa771f)
                                                 #5  0x00007fafc9ad142a _ZN3QV413MemoryManager9allocDataEm (libQt5Qml.so.5 + 0xa942a)
                                                 #6  0x00007fafc9ad1484 _ZN3QV413MemoryManager25allocObjectWithMemberDataEPKNS_6VTableEj (libQt5Qml.so.5 + 0xa9484)
                                                 #7  0x00007fafc9b39fad _ZN3QV415ExecutionEngine18newTypeErrorObjectERK7QString (libQt5Qml.so.5 + 0x111fad)
                                                 #8  0x00007fafc9b414b3 _ZN3QV415ExecutionEngine14throwTypeErrorERK7QString (libQt5Qml.so.5 + 0x1194b3)
                                                 #9  0x00007fafc9b4ffe7 _ZN3QV46Lookup22resolvePrimitiveGetterEPNS_15ExecutionEngineERKNS_5ValueE (libQt5Qml.so.5 + 0x127fe7)
                                                 #10 0x00007faf70098b9f n/a (n/a + 0x0)
                                                 #11 0x00007fafc9bdc5c9 n/a (libQt5Qml.so.5 + 0x1b45c9)
                                                 #12 0x00007fafc9b76d2e _ZN3QV48Function4callEPKNS_5ValueES3_iPKNS_16ExecutionContextE (libQt5Qml.so.5 + 0x14ed2e)
                                                 #13 0x00007fafc9cf2916 _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5 + 0x2ca916)
                                                 #14 0x00007fafc9cf7c15 _ZN11QQmlBinding8evaluateEPb (libQt5Qml.so.5 + 0x2cfc15)
                                                 #15 0x00007fafc9cfbb78 n/a (libQt5Qml.so.5 + 0x2d3b78)
                                                 #16 0x00007fafc9cf9914 _ZN11QQmlBinding6updateE6QFlagsIN16QQmlPropertyData9WriteFlagEE (libQt5Qml.so.5 + 0x2d1914)
                                                 #17 0x00007fafc9cd600d _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5 + 0x2ae00d)
                                                 #18 0x00007fafc8f64955 n/a (libQt5Core.so.5 + 0x2ec955)
                                                 #19 0x00007fafc8f64dd6 n/a (libQt5Core.so.5 + 0x2ecdd6)
                                                 #20 0x00007fafc8f5e020 _ZN7QObject9destroyedEPS_ (libQt5Core.so.5 + 0x2e6020)
                                                 #21 0x00007fafc8f630f7 _ZN7QObjectD2Ev (libQt5Core.so.5 + 0x2eb0f7)
                                                 #22 0x00007fafc88e7db7 __run_exit_handlers (libc.so.6 + 0x3fdb7)
                                                 #23 0x00007fafc88e7f5e exit (libc.so.6 + 0x3ff5e)
                                                 #24 0x00007fafc88d0159 __libc_start_main (libc.so.6 + 0x28159)
                                                 #25 0x000055fc2692e07e _start (sddm-greeter + 0x1a07e)
                                                 
                                                 Stack trace of thread 1005:
                                                 #0  0x00007fafc899d46f __poll (libc.so.6 + 0xf546f)
                                                 #1  0x00007fafc785693f n/a (libglib-2.0.so.0 + 0xa693f)
                                                 #2  0x00007fafc78012b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
                                                 #3  0x00007fafc8f866e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
                                                 #4  0x00007fafc8f2c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
                                                 #5  0x00007fafc8d44d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
                                                 #6  0x00007fafc519f098 n/a (libQt5DBus.so.5 + 0x17098)
                                                 #7  0x00007fafc8d45f0f n/a (libQt5Core.so.5 + 0xcdf0f)
                                                 #8  0x00007fafc84493e9 start_thread (libpthread.so.0 + 0x93e9)
                                                 #9  0x00007fafc89a8293 __clone (libc.so.6 + 0x100293)
                                                 
                                                 Stack trace of thread 1078:
                                                 #0  0x00007fafc899d46f __poll (libc.so.6 + 0xf546f)
                                                 #1  0x00007fafc785693f n/a (libglib-2.0.so.0 + 0xa693f)
                                                 #2  0x00007fafc78012b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
                                                 #3  0x00007fafc8f866e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
                                                 #4  0x00007fafc8f2c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
                                                 #5  0x00007fafc8d44d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
                                                 #6  0x00007fafca0d71eb n/a (libQt5Quick.so.5 + 0x1471eb)
                                                 #7  0x00007fafc8d45f0f n/a (libQt5Core.so.5 + 0xcdf0f)
                                                 #8  0x00007fafc84493e9 start_thread (libpthread.so.0 + 0x93e9)
                                                 #9  0x00007fafc89a8293 __clone (libc.so.6 + 0x100293)
                                                 
                                                 Stack trace of thread 1088:
                                                 #0  0x00007fafc899d46f __poll (libc.so.6 + 0xf546f)
                                                 #1  0x00007fafc785693f n/a (libglib-2.0.so.0 + 0xa693f)
                                                 #2  0x00007fafc78012b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
                                                 #3  0x00007fafc8f866e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
                                                 #4  0x00007fafc8f2c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
                                                 #5  0x00007fafc8d44d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
                                                 #6  0x00007fafc9d335a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
                                                 #7  0x00007fafc8d45f0f n/a (libQt5Core.so.5 + 0xcdf0f)
                                                 #8  0x00007fafc84493e9 start_thread (libpthread.so.0 + 0x93e9)
                                                 #9  0x00007fafc89a8293 __clone (libc.so.6 + 0x100293)
                                                 
                                                 Stack trace of thread 1090:
                                                 #0  0x00007fafc899fb7b __select (libc.so.6 + 0xf7b7b)
                                                 #1  0x00007fafbe4b0172 n/a (libnvidia-glcore.so.455.45.01 + 0x1120172)
                                                 #2  0x00007fafbe4aafcc n/a (libnvidia-glcore.so.455.45.01 + 0x111afcc)
                                                 #3  0x00007fafc84493e9 start_thread (libpthread.so.0 + 0x93e9)
                                                 #4  0x00007fafc89a8293 __clone (libc.so.6 + 0x100293)
                                                 
                                                 Stack trace of thread 1007:
                                                 #0  0x00007fafc899d46f __poll (libc.so.6 + 0xf546f)
                                                 #1  0x00007fafc785693f n/a (libglib-2.0.so.0 + 0xa693f)
                                                 #2  0x00007fafc78012b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
                                                 #3  0x00007fafc8f866e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
                                                 #4  0x00007fafc8f2c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
                                                 #5  0x00007fafc8d44d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
                                                 #6  0x00007fafc9d335a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
                                                 #7  0x00007fafc8d45f0f n/a (libQt5Core.so.5 + 0xcdf0f)
                                                 #8  0x00007fafc84493e9 start_thread (libpthread.so.0 + 0x93e9)
                                                 #9  0x00007fafc89a8293 __clone (libc.so.6 + 0x100293)
                                                 
                                                 Stack trace of thread 1087:
                                                 #0  0x00007fafc899d46f __poll (libc.so.6 + 0xf546f)
                                                 #1  0x00007fafc785693f n/a (libglib-2.0.so.0 + 0xa693f)
                                                 #2  0x00007fafc78012b1 g_main_context_iteration (libglib-2.0.so.0 + 0x512b1)
                                                 #3  0x00007fafc8f866e1 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30e6e1)
                                                 #4  0x00007fafc8f2c3fc _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b43fc)
                                                 #5  0x00007fafc8d44d22 _ZN7QThread4execEv (libQt5Core.so.5 + 0xccd22)
                                                 #6  0x00007fafc9d335a9 n/a (libQt5Qml.so.5 + 0x30b5a9)
                                                 #7  0x00007fafc8d45f0f n/a (libQt5Core.so.5 + 0xcdf0f)
                                                 #8  0x00007fafc84493e9 start_thread (libpthread.so.0 + 0x93e9)
                                                 #9  0x00007fafc89a8293 __clone (libc.so.6 + 0x100293)

joekamprad · December 22, 2020, 6:49pm

are you using nvidia drivers?

cluster · December 23, 2020, 8:55am

yes, I’m using nvidia with multi screen setup (3 screens)
nvidia-dkms (455.45.01-1)

with other sddm themes I do not get any errors

cluster · December 26, 2020, 12:52pm

after switching to lightdm & lightdm-slick-greeter all sddm and systemd-coredump errors have disappeared
I only noticed that kwin, plasmashell, xorg processes cause a higher cpu load afterwards, so I switched the compositor to xrender which improved the situation …
is there any alternative & better compositor that you can recommend for using w/ plasma?