Problems with user login and recovery from lock after upgrade
After upgrading 3 machines from Fedora 19 to 20 I noticed some odd behavior. First, the screen shield would kick in even if no user was logged in. Second, after hitting escape to clear the shield I the username field was grey. Clickig into the field, I'd have to hit enter twice to get the name entered to "take". Finally, after clearing the screen shield for a logged in user the system would hang after I entered the password and bounce me back to the screen shield
I have not seen this problem in any of the (many) systems I've done a clean install of Fedora 20 on.
Note that I am using the 01-local-settings file method to suppress the user login list (discussed in https://ask.fedoraproject.org/en/question/9875/how-do-i-disable-user-list-in-gdm/ ).
