https://bugs.kde.org/show_bug.cgi?id=528337
Bug ID: 528337
Summary: plasma-kscreen-osd.service SIGSEGV when switching
screens
Classification: Plasma
Product: KScreen
Version First 6.8.2
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: common
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
DESCRIPTION
I got a crash when installing a new ThinkPad Smart Dock and playing with it.
Unfortunately I don't remember what I did exactly to cause the crash, but some
insights into my setup and what I was doing:
- a laptop connected to a dock via thunderbolt
- two DELL U2415 screens connected via DP to the dock
- I was playing with the screen settings, plugging and unplugging them, using
ddcutil to change the source and brightness, etc. I was also rearranging the
screens in Display Configuration. Somewhen during that
plasma-kscreen-osd.service got SIGSEGV-ed.
STEPS TO REPRODUCE
dunno, but see above
STACKTRACE
PID: 94008 (kscreen_osd_ser)
TID: 94008 (kscreen_osd_ser)
UID: 1000 (user)
GID: 1000 (user)
Signal: 11 (SEGV) si_code: SEGV_MAPERR
Timestamp: Tue 2026-11-03 14:10:34 CET (1 day 1h ago)
Command Line: /usr/lib/kscreen_osd_service
Executable: /usr/lib/kscreen_osd_service
Control Group:
/user.slice/user-1000.slice/[email protected]/background.slice/plasma-kscreen-osd.service
Unit: [email protected]
User Unit: plasma-kscreen-osd.service
Slice: user-1000.slice
Owner UID: 1000 (user)
Boot ID: <snip>
Machine ID: <snip>
Hostname: <snip>
Storage: /var/lib/systemd/coredump/core.kscreen_osd_ser.1000.<snip>.zst
(present)
Size on Disk: 4.8M
Message: Process 94008 (kscreen_osd_ser) of user 1000 dumped core.
Stack trace of thread 94008:
#0 0x00007fccfb53b1b9 n/a (libKF6Screen.so.8 + 0x161b9)
#1 0x00007fccfb5666f6 n/a (libKF6Screen.so.8 + 0x416f6)
#2 0x00007fccfb5514d1 _ZN7KScreen18SetConfigOperation5startEv
(libKF6Screen.so.8 + 0x2c4d1)
#3 0x00007fccf95ebe66 _ZN7QObject5eventEP6QEvent
(libQt6Core.so.6 + 0x1ebe66)
#4 0x00007fccf95891d8
_ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 +
0x1891d8)
#5 0x00007fccf958a36f
_ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData
(libQt6Core.so.6 + 0x18a36f)
#6 0x00007fccf98c66b8 n/a (libQt6Core.so.6 + 0x4c66b8)
#7 0x00007fccf83fe75e n/a (libglib-2.0.so.0 + 0x6175e)
#8 0x00007fccf8407c50 n/a (libglib-2.0.so.0 + 0x6ac50)
#9 0x00007fccf8407db5 g_main_context_iteration
(libglib-2.0.so.0 + 0x6adb5)
#10 0x00007fccf98c4d22
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x4c4d22)
#11 0x00007fccf9596a74
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x196a74)
#12 0x00007fccf958cfca _ZN16QCoreApplication4execEv
(libQt6Core.so.6 + 0x18cfca)
#13 0x000056380111425b n/a (kscreen_osd_service + 0x625b)
#14 0x00007fccf8c27781 n/a (libc.so.6 + 0x27781)
#15 0x00007fccf8c278b9 __libc_start_main (libc.so.6 + 0x278b9)
#16 0x0000563801114435 n/a (kscreen_osd_service + 0x6435)
Stack trace of thread 94028:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94014:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccf977f981
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x37f981)
#4 0x00007fccf93509b7 n/a (libQt6WaylandClient.so.6 + 0x709b7)
#5 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94017:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94020:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94031:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94027:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccf977f981
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x37f981)
#4 0x00007fccfb0c399e n/a (libQt6Quick.so.6 + 0x4c399e)
#5 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94029:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94011:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8d119d7 ppoll (libc.so.6 + 0x1119d7)
#2 0x00007fccf8407c9e n/a (libglib-2.0.so.0 + 0x6ac9e)
#3 0x00007fccf8407db5 g_main_context_iteration
(libglib-2.0.so.0 + 0x6adb5)
#4 0x00007fccf98c4d22
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x4c4d22)
#5 0x00007fccf9596a74
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x196a74)
#6 0x00007fccf96c4a02 _ZN7QThread4execEv (libQt6Core.so.6 +
0x2c4a02)
#7 0x00007fccf9b69781 n/a (libQt6DBus.so.6 + 0x38781)
#8 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#9 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#10 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94016:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8d119d7 ppoll (libc.so.6 + 0x1119d7)
#2 0x00007fccf8407c9e n/a (libglib-2.0.so.0 + 0x6ac9e)
#3 0x00007fccf8407db5 g_main_context_iteration
(libglib-2.0.so.0 + 0x6adb5)
#4 0x00007fccf98c4d22
_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
(libQt6Core.so.6 + 0x4c4d22)
#5 0x00007fccf9596a74
_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 +
0x196a74)
#6 0x00007fccf96c4a02 _ZN7QThread4execEv (libQt6Core.so.6 +
0x2c4a02)
#7 0x00007fccf9779075 n/a (libQt6Core.so.6 + 0x379075)
#8 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#9 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94018:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94015:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8d112e5 __poll (libc.so.6 + 0x1112e5)
#2 0x00007fccf9350a18 n/a (libQt6WaylandClient.so.6 + 0x70a18)
#3 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#4 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#5 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94019:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94030:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94032:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94036:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c97702 pthread_cond_timedwait (libc.so.6 +
0x97702)
#3 0x00007fccf977f8e9
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x37f8e9)
#4 0x00007fccf96c1845 n/a (libQt6Core.so.6 + 0x2c1845)
#5 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94033:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94035:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c97702 pthread_cond_timedwait (libc.so.6 +
0x97702)
#3 0x00007fccf977f8e9
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x37f8e9)
#4 0x00007fccf96c1845 n/a (libQt6Core.so.6 + 0x2c1845)
#5 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94043:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c97702 pthread_cond_timedwait (libc.so.6 +
0x97702)
#3 0x00007fccf977f8e9
_ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt6Core.so.6 + 0x37f8e9)
#4 0x00007fccf96c1845 n/a (libQt6Core.so.6 + 0x2c1845)
#5 0x00007fccf9778fdb n/a (libQt6Core.so.6 + 0x378fdb)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94034:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
Stack trace of thread 94037:
#0 0x00007fccf8ca08f2 n/a (libc.so.6 + 0xa08f2)
#1 0x00007fccf8c94c79 n/a (libc.so.6 + 0x94c79)
#2 0x00007fccf8c974ec pthread_cond_wait (libc.so.6 + 0x974ec)
#3 0x00007fccd8e2744e n/a (libgallium-26.2.6-arch1.1.so +
0x62744e)
#4 0x00007fccd8ddc6bd n/a (libgallium-26.2.6-arch1.1.so +
0x5dc6bd)
#5 0x00007fccd8e2738d n/a (libgallium-26.2.6-arch1.1.so +
0x62738d)
#6 0x00007fccf8c98042 n/a (libc.so.6 + 0x98042)
#7 0x00007fccf8d2072c n/a (libc.so.6 + 0x12072c)
ELF object binary architecture: AMD x86-64
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.8.2
KDE Frameworks Version: 6.31.0
Qt Version: 6.12.0
Kernel Version: 7.2.11-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 8840HS w/ Radeon 780M Graphics
Memory: 64 GiB of RAM (58.5 GiB usable)
Graphics Processor: AMD Radeon 780M Graphics
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