https://bugs.kde.org/show_bug.cgi?id=515140
Bug ID: 515140
Summary: KWin can't start in realtime priority via RTKit -
Operation not permitted
Classification: Plasma
Product: kwin
Version First git master
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
KWin tries to start in realtime priority, but it can't despite this file being
present:
aur/kwin-hifps-git [master●] » cat /etc/security/limits.d/99-realtime.conf
@realtime - rtprio 95
@realtime - memlock unlimited
and my own user present in realtime group. ulimit -r output is 0 and rtkit
doesn't automatically give it permission to start in realtime mode despite
other threads being in realtime:
ene 26 16:01:23 malasdecisiones rtkit-daemon[154398]: Successfully made thread
173756 of process 173601 owned by '1000' RT at priority 20.
STEPS TO REPRODUCE
1. Launch `kwin-wayland --replace`
OBSERVED RESULT
It can't get RT priority.
EXPECTED RESULT
It should take RT priority at launch.
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: Git Master as of 26/01/26
KDE Frameworks Version: Git Master as of 26/01/26
Qt Version: Git Master as of 26/01/26
ADDITIONAL INFORMATION
I'm using plasma-login-manager for login.
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