Re: Cannot log into KDE Plasma
Assuming you don't have a full filesystem, usually the login failure is caused by root ownership having previously attached to something inside the user's home folder -- for example "sudo kate" will cause this, when you should be using "kdesudo kate".
One file to review is the ~/.xsession-errors file. It may or may not point to the cause of the failure to start plasma.
Next, using either a root shell or from a Live CD, at the user's home directory run "ls -la" and take a look at the file .Xauthority in your home folder -- does it have root ownership? If so, delete it. Using "ls -la" look at everything at the top level in the user's home folder -- nothing below the top directory should be owned by root. Next take a look under ~/.kde/share/config, or better yet, just "rm -rf" the config folder under ~/.kde/share/. Then try another normal login. You will have lost your customizations, but you should get a default KDE desktop.
Last edited by dabl; April 11th, 2013 at 08:07 PM.
Intel Core i7-950 / Asus P6X58D-E / Nvidia GTX480 / siduction 64-bit on OCZ Revodrive SSD / KDE4.10.2/ Kubuntu 13.04