I had installed kubuntu 15.04 a few weeks back.
Till now it had worked fine.
But somehow it has started to behave oddly.
I do see it boot and am greeted with the plasma login screen but after I login I just see my mouse pointer and a black scree. When I press alt + space
I see the Krunner but when I type in the box It doesn't do any thing.
Its same after4 startx
it just restarts plasma and i am again ending up with the cursor.
the result of ls -l etc is as below
I have tried Ctrl+Alt+F1 but I don't know what to do after I get the console with the login option.