https://bugs.kde.org/show_bug.cgi?id=514129
Bug ID: 514129
Summary: KDE-Plasma will lock up and fail to start on Intel
Battlemage dGPU (B580) on kernel 6.18+
Classification: Plasma
Product: plasmashell
Version First 6.5.4
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Startup process
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 188200
--> https://bugs.kde.org/attachment.cgi?id=188200&action=edit
gdb log session when I attempted to debug
SUMMARY
Kde plasma (wayland only tested) will not start with linux kernel 6.18 or
above. it will start and run fine with 6.17 or earlier. This only happens with
my intel B580 Graphics Card. This does not happen with integrated Ryzen 9000 or
iris graphics 80EU. This only affects KDE (sway, xfce, niri, hyprland work
without issue). Down grading Kernel to 6.17.9.arch1-1 will fix this (not much
of a fix). Versions 6.18.2.arch2-1 and 6.18.3.arch1-1 cause this. I do not have
older kernel versions currently to test with
STEPS TO REPRODUCE
1. upgrade kernel to 6.18 (or higher)
2. attempt to start kde plasma (weather from sddm or tty[startplasma-wayland])
3. nothing happens after successful login, tty session freezes
OBSERVED RESULT
System locks up, this includes switching to a seperate tty on the same screen.
HOWEVER, ssh works in this state so the system can be observed and recovered.
restarting sddm will unfreeze the system if plasma was started from sddm
EXPECTED RESULT
KDE plasma to load normally
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
ADDITIONAL INFORMATION
running startplasma-wayland with gdb showed my nothing
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