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I found that on two freshly installed Ubuntu 16.04-LTS desktops, for some reason I can't perform reboot or shutdown. I click on reboot/shutdown in the upper right corner's popup dialog but nothing happens when I chose reboot or shutdown option. It is OK when I do the same in terminal window by issuing shutdown or reboot command.

Juan Antonio
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DisplayName
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  • does `sudo init 0` work? – Nisheet Jan 20 '17 at 12:33
  • yes, moreover: when I click on Shutdown or Reboot on my desktop then foloowing message appears in the syslog: http://pastebin.com/EGvXCRsD – DisplayName Jan 23 '17 at 09:36
  • Might be a kernel issue, as stated in the bug [here](https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1594023). Try with the latest kernel if it fixes the issue. – Nisheet Jan 23 '17 at 10:52
  • Some users have fixed it be editing **/etc/default/grub line:** `GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"` to `GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force"` then run `sudo update-grub` [Source](http://askubuntu.com/questions/764568/ubuntu-16-04-hangs-on-shutdown-restart) – Nisheet Jan 23 '17 at 10:55
  • GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force" doesn't work for me. – DisplayName Jan 23 '17 at 11:53
  • Which version of the kernel are you using? – Nisheet Jan 23 '17 at 12:44

2 Answers2

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I had the same problem, hard shut-off your computer (Holding the power button down for 10-20 seconds) and turn it on again. Not the most graceful way, but it works.
Hope this helps!!

Ubuntu User
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  • How will this fix the problem that reboot/shutdown dialog doesn't worg ? On top you will risk having to do fsck on your filesystems at next boot and potentially loose data ! – Soren A Jan 20 '17 at 12:34
  • It worked for me, I don't know why but it was very glitchy when I first got ubuntu. – Ubuntu User Jan 20 '17 at 12:52
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OK, finally I found the problem. The problem was with PAM configuration files modified during installation (from local preseed) process.

DisplayName
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