Since a recent Tubmleweed update, the first login (Plasma (X11)) after every reboot crashes, and returns to the login screen. Subsequent logins either crash, work fine, or kinda work with some process stuck at 100% CPU.
I found the following in “Crashed Process Viewer” - does this help at all?
PID: 2253 (Xorg.bin)
UID: 0 (root)
GID: 0 (root)
Signal: 6 (ABRT)
Timestamp: Tue 2023-12-12 09:38:24 PST (2h 7min ago)
Command Line: /usr/bin/Xorg.bin -nolisten tcp -background none -seat seat0 vt2 -auth /run/sddm/xauth_CLFrpb -noreset -displayfd 16
Executable: /usr/bin/Xorg.bin
Control Group: /system.slice/display-manager.service
Unit: display-manager.service
Slice: system.slice
Boot ID: 306fd08321bc426da321fdb008719cf7
Machine ID: fddcdaeadb7f46f9a08729d8d2239d68
Hostname: Ken-System76
Storage: /var/lib/systemd/coredump/core.Xorg\x2ebin.0.306fd08321bc426da321fdb008719cf7.2253.1702402704000000.zst (inaccessible)
Message: Process 2253 (Xorg.bin) of user 0 dumped core.
Stack trace of thread 2253:
#0 0x00007ff2c1e91dec __pthread_kill_implementation (libc.so.6 + 0x91dec)
#1 0x00007ff2c1e3f0c6 raise (libc.so.6 + 0x3f0c6)
#2 0x00007ff2c1e268d7 abort (libc.so.6 + 0x268d7)
#3 0x000055f26a504dbc OsAbort (Xorg.bin + 0x1dbdbc)
#4 0x000055f26a505e1f FatalError (Xorg.bin + 0x1dce1f)
#5 0x000055f26a508502 n/a (Xorg.bin + 0x1df502)
#6 0x00007ff2c1e3f190 __restore_rt (libc.so.6 + 0x3f190)
#7 0x00007ff2c17a58f3 n/a (modesetting_drv.so + 0x148f3)
#8 0x000055f26a44e499 RRCrtcSet (Xorg.bin + 0x125499)
#9 0x000055f26a4541ea ProcRRSetCrtcConfig (Xorg.bin + 0x12b1ea)
#10 0x00007ff2c14c8262 n/a (nvidia_drv.so + 0x4c8262)
ELF object binary architecture: AMD x86-64