BTW, Accidentally I found a clue about that bug. It seems that gnome-settings daemon that serves gdm, interferes with user's gnome-settings-daemon.
If I ssh in, and do 'sudo killall -9 gnome-settings-daemon', while log-in screen is presented, the system comes up normally. As a workaround I even added this to /etc/X11/Xsession.d. (However due to the fact that shell script from the above folder runs as the users and gnome-settings-daemon from gdm runs as 'gdm' user, I had to use sudo in that screen, but since sudo asks for a password, I did a gross-horror securety hack, by making sudo not ask for a password - for VM for now, it shouldn't matter. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728803 Title: Ubuntu theme switches from partially broken to gnome default on VirtualBox guest -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs