Bug 1282577

Summary:	gnome hangs when postlogin script fails
Product:	Red Hat Enterprise Linux 7	Reporter:	Joe Wright <jwright>
Component:	gdm	Assignee:	Ray Strode [halfline] <rstrode>
Status:	CLOSED ERRATA	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	high	Docs Contact:
Priority:	high
Version:	7.1	CC:	mboisver, mclasen, tpelka
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	gdm-3.14.2-13.el7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-04 06:39:20 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1203710, 1297830, 1313485

Description Joe Wright 2015-11-16 19:10:02 UTC

Description of problem:
Gnome fails when postlogin script exits with status 1

Version-Release number of selected component (if applicable):
- current

How reproducible:
verified by frontline support

Steps to Reproduce:
1. create /etc/gdm/PostLogin/Default
2. add the line 'exit 1'
3. save changes, make the Default file executable
4. Restart GDM 
5. Attempt GUI login
6. Observe

Actual results:
- Gnome hangs

Expected results:
- Gnome should start normally

Additional info:
- Gnome should not fail when the post login script fails. 
- No errors in debug output when Gnome debugging is enabled

Comment 2 Joel Huddleson 2015-11-16 21:23:44 UTC

Expected results should be changed to:

- Gnome restarts login process

Comment 3 Joel Huddleson 2015-11-16 21:30:59 UTC

(In reply to Joel Huddleson from comment #2)
> Expected results should be changed to:
> 
> - Gnome restarts login process

Incidentally, this expected result *is* the documented behavior for GNOME3.

Comment 4 Ray Strode [halfline] 2016-04-18 20:04:18 UTC

So the behavior changed a bit in RHEL 7.2 since we've rebased to newer GDM.  We no longer hang, but there is still a show stopping problem.

Namely, the login screen in RHEL 7 is not capable of showing windows (including windows created by zenity).

I think the best option is to move the PostLogin/PreSession scripts to get run after the login screen is torn down, immediately before forking to start the session.

Comment 7 Michael Boisvert 2016-09-01 14:23:07 UTC

With the script added, the log in process is restarted and does not hang on gdm-3.14.2-18.el7.

Verified.

Comment 9 errata-xmlrpc 2016-11-04 06:39:20 UTC

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://rhn.redhat.com/errata/RHBA-2016-2451.html