I was able to reproduce the issue on the next boot and after this the removal /etc/X11/xorg.conf didn't work either.
Attaching /var/log/Xorg.0.log, /var/log/syslog and .xsession-errors in logs-110301.tar.gz. Hope it helps to resolve the situation. ** Attachment added: "logs-110301.tar.gz" https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/668641/+attachment/1879454/+files/logs-110301.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/668641 Title: GNOME does not load theme after innstalling NVIDIA non-free driver -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs