SUMMARY When you boot the system up without any session running, you have the power control panel available at the login screen, and you can turn off the PC using physical buttons. However when you "lock" the session, those buttons disappear and you can't turn off the PC or even restart it. I can't see any options in the settings regarding this problem. STEPS TO REPRODUCE 1. Lock a session 2. Shutdown/sleep/restart buttons are not present and you can't turn off the PC by any other way (such as hardware buttons) OBSERVED RESULT You can't turn off a computer from a lockscreen. EXPECTED RESULT I expect to be able to do so SOFTWARE/OS VERSIONS KDE Plasma Version: 5.18.6 KDE Frameworks Version: 5.71.0 Qt Version: 5.12.7
*** This bug has been marked as a duplicate of bug 336369 ***