Ubuntu
indicator-session package

  1. Bug #987220
  2. Comment #50

Comment 50 for bug 987220

Revision history for this message
Stefan Essl (stefan-essl-vhs) wrote : Re: System does not power off reliably when "Shut Down" chosen from GUI

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?