just booted into safe mode now. had a deeper look into the logs and i think it might be the nut plugin. Its showing as unhealthy so its initiating the shutdown. Il try to remove that for now, even though my nut server should be up..
Jun 27 17:03:55 VIENNA plugin-manager: nut-dw.plg installed
Jun 27 17:03:55 VIENNA upsmon[9362]: UPS
[email protected]: forced shutdown in progress
Jun 27 17:03:55 VIENNA upsmon[9362]: Too few UPS(es) are healthy (0<1), initiating forced shutdown
Jun 27 17:03:55 VIENNA upsmon[9362]: Executing automatic power-fail shutdown
Jun 27 17:03:55 VIENNA upsmon[9362]: Auto logout and shutdown proceeding