Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

When I log in to Ubuntu (GNOME), after I enter the password nothing appears. But a small message tells me that

GNOME power management is not configured properly, and ask the Administrator to fix it.

Is there any way to reset the preferences? I have KDE and every thing works very good. But I want to run GNOME again...

share|improve this question

Apparently, this error occurs if you don't have enough disk space available.

Drop to TTY1 using Ctrl + Alt + F1.

Enter the following commands:

sudo apt-get clean
sudo apt-get autoclean
sudo reboot

The last command will reboot the system for you. Try logging in now.

If the above doesn't work, you might want to try chmodding /tmp to 0777

chmod 0777 /tmp


share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.