Friday, February 18, 2011

GNOME Power Manager Error at Login Screen

If you run out of disk space on any of your system partitions, i.e. '/', '/home' or probably '/boot' also, you won't be able to log in to your desktop. Instead when you type your password, you'll see this error:

Install Problem! The configuration defaults for GNOME Power Manager have not been installed correctly. Please contact your computer administrator.

Mostly, this error seems to appear right after you did a release upgrade, meaning from one version of Ubuntu to another.

For a workaround, press Ctrl + Alt + F1 at the login screen. You will see a console, tty1. Log in there using your username and password, then clean your apt-get cache to free up some space:

sudo apt-get clean
sudo apt-get autoclean

Press Ctrl + Alt + Delete to reboot, then try again to log in. Hopefully, you will succeed this time. Then from your desktop, in order to free up some more space, if there are some personal files/data on the system partition, move them to another partition or another drive.

If cleaning the apt-get cache doesn't solve the issue, you will need to boot an Ubuntu Live CD/USB, mount your system partition and then move your data from it to another partition or another drive, thus freeing up some space.

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