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Description of problem:
gdm was frozen right after start, because of misconfigured /etc/gdm/custom.conf where I had:

[daemon]
AutomaticLoginEnable = true
AutomaticLogin = test

There was no user named test in system. After commenting these lines everything solved the problem but gdm greeter should be shown despite the error in config and there should be no freezes.


Version-Release number of selected component (if applicable):
gdm-3.14.2-18.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. add user test
2. configure autologin
3. delete user test
4. restart system

Actual results:
System is frozen after gdm starts.

Expected results:
System should show gdm greeter screen or some error message without freezes.

Additional info:

upstream bug has a patch, though, it also points out the patch is less than optimal.

We should probably fix this in 7.4 via rebase than in 7.3

(In reply to Ray Strode [halfline] from comment #1)
> upstream bug has a patch, though, it also points out the patch is less than
> optimal.
> 
> We should probably fix this in 7.4 via rebase than in 7.3

No one hit this issue except QE, so I guess it is save to fix in 7.4.

right, it's not a regression or anything, i think it's been a problem since RHEL 3, but at least since RHEL 5.

We should fix it for 7.4 though.

okay added the patch from the upstream bug.

The solution is pretty good actually. The system automatically logs into a new basic GNOME session that gets your name/username/password during the initial setup. After you complete it, you are logged into your new account.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2017:2128