In my case problem was related with full disk. When I logged to console with Ctrl+Alt+F1, checked disk usage: $ df -h
And it showed, that there is no space left. When I deleted some files, I could again log in. Thanks (Mantas Zimnickas) -- gnome power manager prevented gdm login https://bugs.launchpad.net/bugs/441646 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs