GNOME Bugzilla – Bug 724532
gdm gui stalls if you press cancel while it is looking up a non-existing username
Last modified: 2014-12-18 18:57:12 UTC
Created attachment 269371 [details] [review] patch for /usr/share/gnome-shell/js/gdm/util.js With disable-user-list=true and you enter a wrong username and then press the cancel button while it is looking up the username gdm sort of stalls. All user-interactive fields disappear, and there is no way to log in. As a normal user your only option is to reboot the machine. The problem seems to lie in /usr/share/gnome-shell/js/gdm/util.js. I attached a simple patch which eliminates this behaviour. This is not a real fix because it produces other unexpected behaviour but it points at the part of the code where things start to go wrong.
i think this was fixed when bug 740141 was fixed