Recently my PC cannot shutdown (Ubuntu 16.04). Each time I have to turn it off manually using the on/off button on the computer. Restart works fine.

When I try shutting down the usual way, the screen remains blocked as it will shut down in a few seconds. A violet screen with a little Central "ubuntu" word with 5 dots below it, four lit red, one lit white. Running sudo init 0 and sudo shutdown now have the same result.

However, I can restart and open the PC with Windows 7 and then shutdown regularly. What should I do?

  • 1
    Please describe what you mean by 'Everytime I need to make this manually'. -- I am thinking of the 'SysRq R E I S U B' manual method, Restart Ubuntu via keyboard and 'SysRq R E I S U O' to shut down.
    – sudodus
    Mar 13, 2018 at 7:49
  • @sudodus fixed.
    – kouty
    Mar 13, 2018 at 7:51
  • 1
    The on/off button of the computer makes a hard shutdown, which might cause corruption of the file system. It is much better to use the 'SysRq R E I S U O' method and get a graceful shutdown. (After using it a few times, you learn it by heart.)
    – sudodus
    Mar 13, 2018 at 8:00
  • @David Foerster fixed. For sudo etc I can open a terminal but the keyboard is in Hebrew or upercases in English and I cannot switch language because the switch language icons disappeared from the desktop.
    – kouty
    Mar 13, 2018 at 17:37
  • 1
    Alright, thanks so far. There are a host of possible causes. I recommend that you go through Shutdown does not power off computer and try what appears to apply to your situation; you can also take a look at similar linked questions on the right side of it. Please report back with any result that appears to lead to noticeable change during shutdown. Thanks. Mar 15, 2018 at 0:06

3 Answers 3


Emergency shutdown in a graceful way

  • Press both the alt and PrintScreen keys all the time and one of the R E I S U O keys one after another slowly.

  • If it is a laptop you might also need to press the Fn key like so:

    Press the three keys Fn and alt and PrintScreen keys all the time

    and one of the R E I S U O keys one after another slowly.

Emergency reboot in a graceful way

The corresponding system request sequence for reboot is similar.

O 'Off' is replaced by B 'Boot'.

  • Press both the alt and PrintScreen keys or
  • in a laptop maybe the three keys Fn and alt and PrintScreen keys all the time

  • The letter key sequence should be R E I S U B

See the following links for more details,

Restart Ubuntu via keyboard


  • @kouty, you are welcome :-)
    – sudodus
    Mar 16, 2018 at 9:59

Try using this in terminal

init 0
  • I tried, without results, the result is the same as with standard shutdown
    – kouty
    Mar 13, 2018 at 21:20

Try this is in Terminal :


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