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I recently installed Xubuntu 14.04 on a Dell Workstation.

Whenever I shutdown, two things happen. Either it shuts down and automatically restarts, or it hangs at shutdown with a black screen.

Searching for a solution I have tried the following:

  • used

    sudo shutdown -h now
    sudo shutdown -P now
    sudo init 0
  • amended and updated

    /etc/default/grub to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force"

  • checked the BIOS for Wake on LAN

    not an option for the DELL Precicion 7400 Workstation)

  • reinstalled Xubuntu

None of these have solved the problems so far.

Anyone have any other options for me to try?

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Did you read this older entry… or this… – TuKsn May 8 '14 at 13:36
Same problem here. Actually in my case was a result of some update I guess as it was working fine just few days ago. My laptop screen turns off after some minutes despite my settings. – lepe Sep 27 '14 at 13:41
Have you tried updating the BIOS? – user4901968 Jan 14 at 22:40

I recall having similar issues many years ago that was strangely due to the video drivers. If you remove quiet splash from your /etc/default/grub and run sudo update-grub, you should be able to find the specific place where the shutdown is getting hung up.

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