I confirm this bug is still present, it is really annoying, but it is easy to solve, just run gdmsetup, unlock, and then plays with selects and buttons until that file is created. So gdm is happy and the warning disappear.
-- Unable to load file '/etc/gdm/custom.conf' https://bugs.launchpad.net/bugs/500377 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs