Cannot restart, reboot, nor shutdown Ubuntu 11.04

Question

I cannot restart, reboot or shut-down my PC using Natty. Whenever I hit shut-down, restart or in terminal sudo reboot it shows a black screen. If I should press down the power button for while, it is forced off.

when did you get this problem? after install a application or what? — shantanu, Jul 26 '11 at 13:06
It might be helpful if you could tell us more about your device, particularly brand and model. — fragos, Feb 25 '12 at 03:06

score 3 · Answer 1 · answered Feb 24 '12 at 23:56

3

Ctrl+Alt+Backspace will kill the X-server and bring you back to the log-on screen. You should be able to dismiss the session there using the shut-down / log-off / restart button.

If that fails to render the satisfaction of shutting down the machine then Ctrl+Alt+F1 which puts you directly into the shell-propmt.

sudo shutdown -h now

or to reboot Ctrl+Alt+Del

answered Feb 24 '12 at 23:56

Ringtail

16,127

Bounty awarded due to the detailing of methods which will gain the desired result. – Thomas Ward Feb 29 '12 at 07:57
Does it the correct answer? – TheOneTeam Mar 30 '12 at 14:41

score 0 · Answer 2 · answered Feb 24 '12 at 23:20

0

A few things you should check:

Check if this works to reboot: sudo shutdown -r now

If it doesn't, copy the console output and paste here. It should give a hint of what's is wrong you your installation.

answered Feb 24 '12 at 23:20

taksan

291

'shutdown -r' is identical to 'reboot', which the OP says causes a black screen to appear. – bessman Feb 24 '12 at 23:34

score 0 · Answer 3 · edited Apr 13 '17 at 12:24

0

This is more likely a bug of some sort that is causing this, which it has been happening more on 11.10 rather than Natty but much discussion has been focused on this occurrence and there are numerous threads on this site concerning the problem. Below is a link to one of the more in-detail discussion on the following matter.

New computer hangs on shutdown/reboot, how to troubleshoot?

edited Apr 13 '17 at 12:24

Community

1

answered Feb 25 '12 at 01:06

Scott Stookey

1,302

score -1 · Answer 4 · answered Feb 28 '12 at 01:37

-1

Have you recently install a dhcp server onto your computer? I have noticed a few, unable to shutdown or restart, problems directly after installation.

answered Feb 28 '12 at 01:37

surgemcgee

506

score -1 · Answer 5 · answered Apr 25 '11 at 21:09

-1

you could try pressing the power button for awhile.

or try the following key combo.

ctrl+alt then press the following keys in following order (while keeping hold of ctrl+alt) prtscn reisou

answered Apr 25 '11 at 21:09

Terry

1,154

That should be reisuo. And it's only Alt+PrtSc, no Ctrl. – bessman Feb 24 '12 at 21:49

score -1 · Answer 6 · answered Apr 25 '11 at 23:33

-1

When you turn it back on go into Keyboard > Layouts > Options > Key Seqence to Kill X Server.

answered Apr 25 '11 at 23:33

wojox

11,362

Cannot restart, reboot, nor shutdown Ubuntu 11.04

6 Answers6