Desiable shutdown for users

user_naa@lemmy.world to Linux@lemmy.ml – 26 points –

Hello! Halt on Linux is disabled for average user by default. It will try to request sudo/root password and if fails returns:

sasha@fedora:~$ systemctl halt
Call to Halt failed: Access denied

How can I make same behavior for poweroff action? I know it is possible somehow via PolicyKit rulle

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Thank you, it works! But I got weird behavior:

  1. User sddm also cannot execute poweroff (it is ok) but if I press shutdown button in sddm it will poweroff (not ok).
  2. If I press shut down in KDE Plasma I will get black screen and no sddm (I can restart it with systemctl restart sddm from tty and it will work again) How can I fix this bugs?

Sorry, I have no idea.

SDDM main process is running as root and ignores all policies. So only way is modifying SDDM source code(