https://bugs.kde.org/show_bug.cgi?id=520501
Bug ID: 520501
Summary: KDE Plasma (Wayland) crash on login
Classification: Plasma
Product: plasmashell
Version First 6.6.5
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: generic-crash
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
Application: plasmashell (6.6.5)
ApplicationNotResponding [ANR]: false
Qt Version: 6.11.1
Frameworks Version: 6.26.0
Operating System: Linux 7.0.9-arch1-1 x86_64
Windowing System: Wayland
Distribution: Arch Linux
DrKonqi: 6.6.5 [CoredumpBackend]
-- Information about the crash:
>From boot I get the normal boot sequence, and login. The display shows and it
tries to restore the windows which is only one Konsole window, and I have an
systemd service that displays the control panel for `Private Internet Access`
(PIA) - which is built-in their control to "auto launch". The system seems to
work fine but I am pressented with this bug report which has only occured since
update to the system around the 20th/21st of May 2026. I am using dual monitors
and no different hardware or new software has been added just the usual
pacman/yay churn. It does seem to occur around the time the kernel jumped a
minor version, currently `uname -a` shows **Linux beast 7.0.9-arch1-1 #1 SMP
PREEMPT_DYNAMIC Sun, 17 May 2026 17:23:07 +0000 x86_64 GNU/Linux**
lscpu shows the following and I am using the i780 gpu to run dual montiors via
HDMI. It not an oom as I have 64GB DDR5 RAM with the UMA_SPECIFIED as 4GB of
system ram for the igpu. The system is not over clocked and it is not using any
extreme memory profiles, just a standard Rust dev machine.
▶ free
total used free shared buff/cache available
Mem: 58Gi 6.5Gi 46Gi 1.2Gi 7.2Gi
52Gi
Swap: 4.0Gi 0B 4.0Gi
▶ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: AuthenticAMD
Model name: AMD Ryzen 9 7940HS w/ Radeon 780M Graphics
CPU family: 25
Model: 116
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
Stepping: 1
Microcode version: 0xa704108
Frequency boost: enabled
CPU(s) scaling MHz: 31%
CPU max MHz: 5263.0610
CPU min MHz: 402.7860
BogoMIPS: 7985.20
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
pdpe1gb rdtscp lm constant_tsc r
ep_good amd_lbr_v2 nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf rapl
pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes
xsave
avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse
3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext per
fctr_llc mwaitx cpuid_fault cpb cat_l3 cdp_l3 hw_pstate ssbd mba perfmon_v2
ibrs ibpb stibp ibrs_enhanced vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid
cqm
rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd
sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc
cqm_mbm
_total cqm_mbm_local user_shstk avx512_bf16 clzero irperf xsaveerptr rdpru
wbnoinvd cppc arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decod
eassists pausefilter pfthreshold vgif x2avic v_spec_ctrl vnmi avx512vbmi umip
pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg
avx512_vpopc
ntdq rdpid overflow_recov succor smca fsrm flush_l1d amd_lbr_pmc_freeze
Virtualization features:
Virtualization: AMD-V
Caches (sum of all):
L1d: 256 KiB (8 instances)
L1i: 256 KiB (8 instances)
L2: 8 MiB (8 instances)
L3: 16 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerabilities:
Gather data sampling: Not affected
Ghostwrite: Not affected
Indirect target selection: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Old microcode: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Mitigation; Safe RET
Spec store bypass: Mitigation; Speculative Store Bypass disabled via
prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user
pointer sanitization
Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB
conditional; STIBP always-on; PBRSB-eIBRS Not affected; BHI Not affected
Srbds: Not affected
Tsa: Mitigation; Clear CPU buffers
Tsx async abort: Not affected
Vmscape: Mitigation; IBPB before exit to userspace
The crash can be reproduced every time.
-- Backtrace (Reduced):
#5 0x00007f55b729897c in QAbstractAnimationJob::stateChanged
(this=this@entry=0x560308983430,
newState=newState@entry=QAbstractAnimationJob::Running,
oldState=oldState@entry=QAbstractAnimationJob::Stopped) at
/usr/src/debug/qt6-declarative/qtdeclarative/src/qml/animations/qabstractanimationjob.cpp:604
#6 0x00007f55b7299021 in QAbstractAnimationJob::setState (this=0x560308983430,
newState=QAbstractAnimationJob::Running) at
/usr/src/debug/qt6-declarative/qtdeclarative/src/qml/animations/qabstractanimationjob.cpp:355
#7 0x00007f55b766a273 in QQuickAnimatorController::beforeNodeSync
(this=0x5603071ad300) at /usr/include/qt6/QtCore/qcomparehelpers.h:1101
#8 QQuickWindowPrivate::syncSceneGraph (this=0x560306bc4660) at
/usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickwindow.cpp:539
#9 0x00007f55b78c580e in QSGRenderThread::sync (this=<optimized out>,
inExpose=false) at
/usr/src/debug/qt6-declarative/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:555
#10 QSGRenderThread::syncAndRender (this=<optimized out>) at
/usr/src/debug/qt6-declarative/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#11 QSGRenderThread::run (this=0x7f54d0003020) at
/usr/src/debug/qt6-declarative/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:977
#12 0x00007f55b5d784fb in QThreadPrivate::start (arg=0x7f54d0003020) at
/usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:466
#13 0x00007f55b52981b9 in start_thread (arg=<optimized out>) at
pthread_create.c:454
#14 0x00007f55b531d21c in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Reported using DrKonqi
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