Ok, I managed to fix it by invoking console command: sudo dpkg-reconfigure X11-common now default ubuntu session works (gpu accelerated, compiz, whatever it's called)
** Changed in: xorg (Ubuntu) Status: New => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/964825 Title: Xorg freeze unity default session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/964825/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs