If now you're able to log-in but there's no frame, it usually means it's a compiz problem :D Back with Ubuntu 10.04-12.04, when I played very frequently with Compiz settings, I messed up the system many times, and the solution has always been to purge everything related to compiz/unity (even the settings in the home directory, with rm -rf ~/.compiz-1 ~/.config/compiz-1 ) and then reinstalling it (maybe with the ubuntu-desktop metapackage).
Also, make sure nvidia's drivers has been correctly installed and they has been loaded (look at the output of lshw in the display section) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1589006 Title: Failed unmounting Mount unit for nvidia support in snappy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1589006/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs