I installed Ubuntu 14.04 LTS after a long time with Windows. Now I can't shutdown or restart Ubuntu from the GUI reliably.

I've seen some posts about grub and haven't found anything useful. But, it shuts down properly when I perform

sudo shutdown -v -h now

After that, subsequent shutdowns execute correctly from the GUI until I install a new application through the terminal.

NOTE: Windows 10 was installed first, then the Ubuntu was installed.

  • would a fresh install be out of place to see if the issue goes away? – George Udosen Dec 3 '16 at 21:26
  • Why install 14.04, when 16.04.1 is the current LTS distribution at ubuntu.com/download/desktop ? – K7AAY Dec 3 '16 at 21:47
  • Well my friend told me that 16,04 is less stable than 14.04? And I failed to install it through USB. When I select try Ubuntu or install Ubuntu both of them stuck on the loading screen just like the problem with shutdown. Something is wrong I can feel it :)) at Last I'm gonna have to wipe all drive and put only Ubuntu on it %) – Sencer Yazıcı Dec 4 '16 at 7:21

Try setting these boot parameters, as ACPI and APM often can be problematic.

sudo -H gedit /etc/default/grub 

to change



GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force apm=power_off"  

then save the file and exit gedit.

Then, do

sudo -H gedit /etc/modules  

and add

apm power_off=1  

and save the file. Then do

sudo update-grub 

and reboot. Should that not resolve the issue, please record the shutdown using your smartphone in slo mo mode a la Ubuntu 16.04.1 : shutdown/reboot stuck on "[ok] stopped thermal daemon service"

  • I tried your suggestion but there is nothing like that when shutting down, my lines end on "will now halt" except for that line every line is "OK". I mean there is nothing to record. Also I tried your method, restarted through terminal no problems since. I installed an application and it does not shutdown through the gui, again. – Sencer Yazıcı Dec 4 '16 at 7:40
  • 1
    I found the problem!! I just deleted the app "guake" and it shuts down correctly. I believe it was waiting to close guake but fails so. I like guake is there a solution :) – Sencer Yazıcı Dec 4 '16 at 7:43
  • So do I ! Then, please edit your question and note what you have done since you wrote it, and that you found a guake inspired shutdown failure. Reinstall guake and see if problem returns. Also please change title to add "because of guake" at end. I will look for a solution, but this is progress ! – K7AAY Dec 5 '16 at 13:27

In my case the problem was solved by installing Nvidia graphics card drivers (the supported version - that's important). On some of new computers driver problems occur. Luckily I was able to figure it out somehow and installed the driver. Thanks for help.

  • 1
    Welcome to Ask Ubuntu! I recommend to edit this answer to expand it with specific details about how to do this. (See also How do I write a good answer? for general advice about what sorts of answers are considered most valuable on AskUbuntu.) – David Foerster Jun 3 '17 at 8:59

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