Fix Shutdown does not power off computer in Ubuntu 14.04

Hello Guys,

This is a simple fix, I have to help a friend who just installed Ubuntu 14.04. After series of web search, I’ve seen some users of one or two versions of Ubuntu had the same problem. Sometimes this is because you’ve installed another distro after installing Ubuntu.

What actually happens when PC is made to shutdown or reboot?

This goes as normal, but leaves Ubuntu saving data, stopping some applications in the background. So you see, this loading for several minutes. I waited for 30 minutes, but my friend’s PC didn’t go off, hence we have to long press the power button to do this.

Fixing this:


% sudo grub-update

In Ubuntu should fix this, if it doesn’t try the alternative below which I found at AskUbuntu

Open terminal:

sudo vi /etc/default/grub

Locate the below:


Add acpi=force at the end as shown below:

GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash acpi=force”

Save and exit using :wq

Finally run,

% sudo update-grub

Reboot and this is fixed!

Enjoy! If you have anything on this kindly let me know.