I can repeat this bug as well. sudo apt-get install xserver-xgl sudo vi /etc/gdm/gdm.conf-custom
and add the lines as described. sudo /etc/init.d/gdm restart ALT+F2 env DISPLAY=:0.0 xterm pops up an xterm over the login screen. Xhost reports 'no access control'. This doesn't work with the default X server though, not sure why the behaviour is different. ** Changed in: xserver-xgl (Ubuntu) Status: Unconfirmed => Confirmed -- xserver or gdm sets xhost + ; no security https://launchpad.net/bugs/73110 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs