I've installed Linux Mint 13 (Maya) Ubuntu 12.04 based on 6 PCs for educational purpose.
Shutdown via GUI does not work at all. The PCs remain powered on, but no input is possible.... I tried to turn them off on a console but only one manages to power off after :~$ sudo shutdown -h now:~$ but not always... The others show the line [876.9876] Power down. forever until i turn them off manually.... After googling around I've found the kernel parameters noapic nolapic acpi=off ...but it didn't change the problem really, sometimes it worked, sometimes not... Then I read the posting from plum7500 (plum01) wrote on 2012-06-13: and i tried: :~$ sudo su - :~# shutdown -h now I use kernel 3.2.023 The PCs have nvidia cards...could this be the problem? I tried to switch from "nvidia current" to "nvidia current-updates" on one PC: After restart i tried to turn off via GUI and it did not power down... I tried again as root on the console, the PC had noapic and nolapic options as kernel parameters: Ctrl-Alt-F1 => console loggedin as user :~$ sudo su - :~# shutdown -h now ...and it did shutdown.... All PCs used to power off since Ubuntu 8.04 ....what can I do? BIOS ACPI settings? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/987220 Title: System does not power off reliably when "Shut Down" chosen from GUI To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-session/+bug/987220/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs