[kde] [Bug 477327] New: startplasma-x11 fails - no usage possible - no log - no sign of debugging possible

[J]

https://bugs.kde.org/show_bug.cgi?id=477327

            Bug ID: 477327
           Summary: startplasma-x11 fails - no usage possible - no log -
                    no sign of debugging possible
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: jojo at automatix.de
  Target Milestone: ---

SUMMARY
***
After upgrade from 5.111 -> 5.112 yesterday, starting plasma (startplasma-x11)
fails.
Ksplash shows start animation, but no worktig session starts up.
startplasma-x11 does not log anything, but eats up each second more 200kB of
memory, consumes 100% CPU, 
***

STEPS TO REPRODUCE
1. Arch Linux - AMD CPU - AMDGPU    Radeon RX 470/480/570/570X/580/580X/590]
(rev e1)
2. $HOME on NFS, .config, .local as subvolume from local btrfs
3. sddm, startplasma-x11, config was more than 1 year old, unchanged

OBSERVED RESULT:
startplasma-x11 leaks memory, 100% CPU usage, looks like a dead-end-loop
$HOME/.xsession-errors are not used to log, 
no working session created

EXPECTED RESULT
working session

SOFTWARE/OS VERSIONS

Linux/KDE Plasma:  Arch Linux current version (2023-11-20)

KDE Plasma Versions extracted from pacman.log, shows up the version change,
which caused the problem.
plasma-framework5 (5.111.0-1 -> 5.112.0-1)

KDE Frameworks Version: 
plasma-framework5 (5.111.0-1 -> 5.112.0-1)

Qt Version: 
upgraded qt5-base (5.15.11+kde+r138-1 -> 5.15.11+kde+r146-1)

ADDITIONAL INFORMATION
[2023-11-20T11:24:47+0100] [ALPM] upgraded kcoreaddons5 (5.111.0-1 ->
5.112.0-1)

Sorry drkonqui or aditional logs are not written or availble.

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