Upon bootup of CentOS 6.5, 64 bits, I got the following message in the lower right hand corner of the GUI screen.
“The configuration defaults for GNOME Power Manager have not been installed correctly. Please contact your computer administrator.”
If you are getting the following error while logging into Linux, its most likely due to low disk space in root drive, try to free up some spaces in root.
1- press Ctrl+Alt+F1 on the login screen and login with your username and password.
2- check the free space in root drive.
3- try to free up /tmp directory
$ sudo rm -rf /tmp/*
4- you can clean up the package cache freeing up lots of disk space by using below steps
a- Remove the repo (replace $REPONAME below with the name of the repo to clear)
$ sudo rm /etc/yum.repos.d/$REPONAME.repo
b- Clean all yum cache
$ sudo yum clean cache all
c- Delete the yum cache for the repo
$ sudo rm -rf /var/cache/yum/x86_64/6/$REPONAME
Note: If you don’t have anything in the cache you’ll have to move your files to another partition. You can use mv for the purpose.
$ mv ./file.zip /media/disk-3/file.zip
This will move the file – file.zip to /media/disk-3.