Thursday, September 13, 2018

unity greeter - 12.04 desktop login loop




I installed 12.04 from CD in a partition where 8.?? had been working. The installation appeared fine but Ubuntu booted to a black screen. After updating packages and fighting with nvidia drivers for a while I now have a login screen.



If I log in using my password the screen goes black for a few seconds and then returns to the login screen. If I choose the guest session I get a black screen with a mouse pointer.



Ctrl+Alt+F1 works and I can log in, but many of the suggestions in previous answers either have no effect on the problem or fail with messages like:




Client failed to connect to the D-BUS daemon




Invalid MIT-MAGIC-COOKIE-1



X11 initialization failed




Is there a known way to get from here to a working system? I'd like to avoid reinstalling because my Internet connection is slow, and the original installation seemed OK.



Ensure that any files/folders in your user's home directory have correct permissions...



sudo chown -R user:user /home/user



That fixed it for me...



OR



Remove the ~/.Xauthority -> https://askubuntu.com/a/289735/168033


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