https://bugs.kde.org/show_bug.cgi?id=520128
Bug ID: 520128
Summary: X.org collapse
Classification: Plasma
Product: xdg-desktop-portal-kde
Version First 6.4.4
Reported In:
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Created attachment 192265
--> https://bugs.kde.org/attachment.cgi?id=192265&action=edit
Desktop
PID: 1138 (Xorg)
UID: 0 (root)
GID: 0 (root)
Signal: 6 (ABRT)
Timestamp: Tue 2026-05-12 12:30:49 CEST (1 day 17h ago)
Command Line: /usr/lib/xorg/Xorg -nolisten tcp -background none -seat seat0
vt2 -auth /run/sddm/xauth_xcoLlb -noreset -displayfd 16
Executable: /usr/lib/xorg/Xorg
Control Group: /system.slice/sddm.service
Unit: sddm.service
Slice: system.slice
Boot ID: b950bfdd3bc8433c8f5ae1fd83fb0997
Machine ID: bbdbb0faca23459ea3e03b0d914844ec
Hostname: Ryzen5-PC
Storage:
/var/lib/systemd/coredump/core.Xorg.0.b950bfdd3bc8433c8f5ae1fd83fb0997.1138.1778581849000000.zst
(inaccessible)
Message: Process 1138 (Xorg) of user 0 dumped core.
Module libgcc_s.so.1 from deb
gcc-14-14.2.0-4ubuntu2~24.04.1.amd64
Module libstdc++.so.6 from deb
gcc-14-14.2.0-4ubuntu2~24.04.1.amd64
Module libzstd.so.1 from deb
libzstd-1.5.5+dfsg2-2build1.1.amd64
Module libsystemd.so.0 from deb systemd-255.4-1ubuntu8.15.amd64
Module libudev.so.1 from deb systemd-255.4-1ubuntu8.15.amd64
Stack trace of thread 1138:
#0 0x0000792fa7a9eb2c __pthread_kill_implementation (libc.so.6
+ 0x9eb2c)
#1 0x0000792fa7a4527e __GI_raise (libc.so.6 + 0x4527e)
#2 0x0000792fa7a288ff __GI_abort (libc.so.6 + 0x288ff)
#3 0x00005c47d681bfae OsAbort (Xorg + 0x1e4fae)
#4 0x00005c47d6821af7 n/a (Xorg + 0x1eaaf7)
#5 0x00005c47d6822b77 FatalError (Xorg + 0x1ebb77)
#6 0x00005c47d681912b n/a (Xorg + 0x1e212b)
#7 0x0000792fa7a45330 __restore_rt (libc.so.6 + 0x45330)
#8 0x0000792fa7a9eb2c __pthread_kill_implementation (libc.so.6
+ 0x9eb2c)
#9 0x0000792fa7a4527e __GI_raise (libc.so.6 + 0x4527e)
#10 0x0000792fa7a288ff __GI_abort (libc.so.6 + 0x288ff)
#11 0x0000792fa7a2881b __assert_fail_base (libc.so.6 + 0x2881b)
#12 0x0000792fa7a3b517 __assert_fail (libc.so.6 + 0x3b517)
#13 0x00005c47d66bb444 dixRegisterPrivateKey (Xorg + 0x84444)
#14 0x0000792fa735270b glamor_init (libglamoregl.so + 0xb70b)
#15 0x0000792fa739a648 n/a (modesetting_drv.so + 0x14648)
#16 0x0000792fa739035f n/a (modesetting_drv.so + 0xa35f)
#17 0x00005c47d6699f10 AddGPUScreen (Xorg + 0x62f10)
#18 0x00005c47d66f98f0 n/a (Xorg + 0xc28f0)
#19 0x00005c47d66ff9f8 n/a (Xorg + 0xc89f8)
#20 0x00005c47d66fbc62 n/a (Xorg + 0xc4c62)
#21 0x00005c47d66fc240 n/a (Xorg + 0xc5240)
#22 0x00005c47d6819b9a n/a (Xorg + 0x1e2b9a)
#23 0x00005c47d68124f5 WaitForSomething (Xorg + 0x1db4f5)
#24 0x00005c47d669986a n/a (Xorg + 0x6286a)
#25 0x00005c47d669deda n/a (Xorg + 0x66eda)
#26 0x0000792fa7a2a1ca __libc_start_call_main (libc.so.6 +
0x2a1ca)
#27 0x0000792fa7a2a28b __libc_start_main_impl (libc.so.6 +
0x2a28b)
#28 0x00005c47d6686395 _start (Xorg + 0x4f395)
Stack trace of thread 1160:
#0 0x0000792fa7b2a072 epoll_wait (libc.so.6 + 0x12a072)
#1 0x00005c47d6819b50 n/a (Xorg + 0x1e2b50)
#2 0x00005c47d6817059 n/a (Xorg + 0x1e0059)
#3 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#4 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1207:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1205:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1208:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1213:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1214:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1209:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1206:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1212:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1211:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
Stack trace of thread 1210:
#0 0x0000792fa7a98d71 __futex_abstimed_wait_common64
(libc.so.6 + 0x98d71)
#1 0x0000792fa7a9b7ed __pthread_cond_wait_common (libc.so.6 +
0x9b7ed)
#2 0x0000792fa4b99edd n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599edd)
#3 0x0000792fa4b65fbb n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x565fbb)
#4 0x0000792fa4b99e0c n/a
(libgallium-25.2.8-0ubuntu0.24.04.1.so + 0x599e0c)
#5 0x0000792fa7a9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000792fa7b29c6c __clone3 (libc.so.6 + 0x129c6c)
ELF object binary architecture: AMD x86-64
PID: 1222 (sddm-greeter-qt)
UID: 115 (sddm)
GID: 120 (sddm)
Signal: 6 (ABRT)
Timestamp: Tue 2026-05-12 12:30:49 CEST (1 day 17h ago)
Command Line: /usr/bin/sddm-greeter-qt6 --socket /tmp/sddm-:0-gOAjVh --theme
/usr/share/sddm/themes/breeze
Executable: /usr/bin/sddm-greeter-qt6
Control Group: /user.slice/user-115.slice/session-1.scope
Unit: session-1.scope
Slice: user-115.slice
Session: 1
Owner UID: 115 (sddm)
Boot ID: b950bfdd3bc8433c8f5ae1fd83fb0997
Machine ID: bbdbb0faca23459ea3e03b0d914844ec
Hostname: Ryzen5-PC
Storage:
/var/lib/systemd/coredump/core.sddm-greeter-qt.115.b950bfdd3bc8433c8f5ae1fd83fb0997.1222.1778581849000000.zst
(inaccessible)
Message: Process 1222 (sddm-greeter-qt) of user 115 dumped core.
Module libgomp.so.1 from deb
gcc-14-14.2.0-4ubuntu2~24.04.1.amd64
Module libzstd.so.1 from deb
libzstd-1.5.5+dfsg2-2build1.1.amd64
Module libgcc_s.so.1 from deb
gcc-14-14.2.0-4ubuntu2~24.04.1.amd64
Module libstdc++.so.6 from deb
gcc-14-14.2.0-4ubuntu2~24.04.1.amd64
Module libsystemd.so.0 from deb systemd-255.4-1ubuntu8.15.amd64
Stack trace of thread 1222:
#0 0x0000766e9f09eb2c __pthread_kill_implementation (libc.so.6
+ 0x9eb2c)
#1 0x0000766e9f04527e __GI_raise (libc.so.6 + 0x4527e)
#2 0x0000766e9f0288ff __GI_abort (libc.so.6 + 0x288ff)
#3 0x0000766e9fd61a31 n/a (libQt6Core.so.6 + 0x561a31)
#4 0x0000766e9fd63310 _ZNK14QMessageLogger5fatalEPKcz
(libQt6Core.so.6 + 0x563310)
#5 0x0000766ea1113d14 n/a (libQt6Gui.so.6 + 0x313d14)
#6 0x0000766ea1111878
_ZN22QGuiApplicationPrivate21createEventDispatcherEv (libQt6Gui.so.6 +
0x311878)
#7 0x0000766e9fd093b9 _ZN23QCoreApplicationPrivate4initEv
(libQt6Core.so.6 + 0x5093b9)
#8 0x0000766ea1111900 _ZN22QGuiApplicationPrivate4initEv
(libQt6Gui.so.6 + 0x311900)
#9 0x0000766ea1112974 _ZN15QGuiApplicationC1ERiPPci
(libQt6Gui.so.6 + 0x312974)
#10 0x000055ef410dda84 n/a (sddm-greeter-qt6 + 0x14a84)
#11 0x0000766e9f02a1ca __libc_start_call_main (libc.so.6 +
0x2a1ca)
#12 0x0000766e9f02a28b __libc_start_main_impl (libc.so.6 +
0x2a28b)
#13 0x000055ef410de4f5 n/a (sddm-greeter-qt6 + 0x154f5)
ELF object binary architecture: AMD x86-64
Operating System: KDE neon User Edition
KDE Plasma Version: 6.6.4
KDE Frameworks Version: 6.26.0
Qt Version: 6.10.2
Kernel Version: 6.17.0-23-generic (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 5 2400G with Radeon Vega Graphics
Memory: 16 GiB of RAM (13.6 GiB usable)
Graphics Processor: AMD Radeon Vega 11 Graphics
ADDITIONAL INFORMATION
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