I just noticed this behaviour after switching over to the experimental systemd plasmashell startup. The daemon keeps restarting itself and the following can be seen in journalctl (mind the reversed order). úno 04 19:01:29 Sad-Silke systemd[865]: plasma-polkit-agent.service: Failed with result 'timeout'. úno 04 19:01:29 Sad-Silke systemd[865]: plasma-polkit-agent.service: start operation timed out. Terminating. úno 04 19:01:24 Sad-Silke polkit-kde-authentication-agent-1[2771]: Authentication agent result: true úno 04 19:01:24 Sad-Silke polkitd[924]: Registered Authentication Agent for unix-session:1 (system bus name :1.110 [/usr/lib/polkit-kde-authentication-agent-1], object path /org/kde/PolicyKit1/AuthenticationAge> úno 04 19:01:24 Sad-Silke polkit-kde-authentication-agent-1[2771]: Listener online úno 04 19:01:24 Sad-Silke polkit-kde-authentication-agent-1[2771]: Adding new listener PolkitQt1::Agent::Listener(0x561fe867b7e0) for 0x561fe8650800 úno 04 19:01:24 Sad-Silke polkit-kde-authentication-agent-1[2771]: New PolkitAgentListener 0x561fe8650800 úno 04 19:01:24 Sad-Silke systemd[865]: Starting KDE PolicyKit Authentication Agent... úno 04 19:01:24 Sad-Silke systemd[865]: Stopped KDE PolicyKit Authentication Agent. úno 04 19:01:24 Sad-Silke systemd[865]: plasma-polkit-agent.service: Scheduled restart job, restart counter is at 37. úno 04 19:01:23 Sad-Silke systemd[865]: Failed to start KDE PolicyKit Authentication Agent. úno 04 19:01:23 Sad-Silke polkitd[924]: Unregistered Authentication Agent for unix-session:1 (system bus name :1.109, object path /org/kde/PolicyKit1/AuthenticationAgent, locale cs_CZ.UTF-8) (disconnected from > úno 04 19:01:23 Sad-Silke systemd[865]: plasma-polkit-agent.service: Failed with result 'timeout'. úno 04 19:01:23 Sad-Silke systemd[865]: plasma-polkit-agent.service: start operation timed out. Terminating. úno 04 19:01:18 Sad-Silke polkit-kde-authentication-agent-1[2753]: Authentication agent result: true úno 04 19:01:18 Sad-Silke polkitd[924]: Registered Authentication Agent for unix-session:1 (system bus name :1.109 [/usr/lib/polkit-kde-authentication-agent-1], object path /org/kde/PolicyKit1/AuthenticationAge> úno 04 19:01:18 Sad-Silke polkit-kde-authentication-agent-1[2753]: Listener online úno 04 19:01:18 Sad-Silke polkit-kde-authentication-agent-1[2753]: Adding new listener PolkitQt1::Agent::Listener(0x55ababb7a920) for 0x55ababb4f800 úno 04 19:01:18 Sad-Silke polkit-kde-authentication-agent-1[2753]: New PolkitAgentListener 0x55ababb4f800 úno 04 19:01:18 Sad-Silke systemd[865]: Starting KDE PolicyKit Authentication Agent... úno 04 19:01:18 Sad-Silke systemd[865]: Stopped KDE PolicyKit Authentication Agent. úno 04 19:01:18 Sad-Silke systemd[865]: plasma-polkit-agent.service: Scheduled restart job, restart counter is at 36. úno 04 19:01:18 Sad-Silke systemd[865]: Failed to start KDE PolicyKit Authentication Agent. úno 04 19:01:18 Sad-Silke polkitd[924]: Unregistered Authentication Agent for unix-session:1 (system bus name :1.108, object path /org/kde/PolicyKit1/AuthenticationAgent, locale cs_CZ.UTF-8) (disconnected from > úno 04 19:01:18 Sad-Silke systemd[865]: plasma-polkit-agent.service: Failed with result 'timeout'. úno 04 19:01:18 Sad-Silke systemd[865]: plasma-polkit-agent.service: start operation timed out. Terminating. The problem went away after disabling systemd startup. I can try to gather more debugging data but I'd appreciate a few hints what to look for. I run up-to-date Arch Linux with Plasma 5.20.90 beta.
Created attachment 135460 [details] systemd output for polkit agent Happens here too when activating systemd startup. Operating System: EndeavourOS KDE Plasma Version: 5.20.90 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 Kernel Version: 5.10.13-zen1-1-zen
*** This bug has been marked as a duplicate of bug 431963 ***