I have the exact same problem on my IdeaPad 520s with an Geforce MX 940. It happens everytime when I have an active Nvidia card (prime-select nvidia). With prime-select intel the poweroff/reboot works fine.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1715746 Title: Cannot shutdown or restart from user session with nvidia drivers in an xorg session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1715746/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
