Bug 6049 - Gnome screensaver crash on login in Unity
Summary: Gnome screensaver crash on login in Unity
Alias: None
Product: ThinLinc
Classification: Unclassified
Component: Desktop environment (show other bugs)
Version: trunk
Hardware: PC Unknown
: P2 Normal
Target Milestone: 4.7.0
Assignee: Pierre Ossman
Keywords: prosaic, samuel_tester
Depends on:
Reported: 2016-10-07 14:20 CEST by Samuel Mannehed
Modified: 2016-10-13 10:48 CEST (History)
1 user (show)

See Also:
Acceptance Criteria:

Screenshot of the crash information (224.84 KB, image/png)
2016-10-07 14:20 CEST, Samuel Mannehed

Description Samuel Mannehed cendio 2016-10-07 14:20:27 CEST
Created attachment 750 [details]
Screenshot of the crash information

Ubuntu 16.04 desktop, fully updated, Unity, ThinLinc 4.7.0rc1 server. Happens every time any user logs in using ThinLinc. Does not happen when logging in locally.

Ubuntu's bug reporting tool does not let me copy the text from the crash info dialogue.. So I attached a screenshot, no debug symbols, though.
Comment 1 Samuel Mannehed cendio 2016-10-07 14:28:47 CEST
Only happens when starting a new session. Happens for both administrators and normal users.

> cendio@ubuntu:~$ dpkg -l | grep gnome-screensaver
> ii  gnome-screensaver   3.6.1-7ubuntu4  amd64   GNOME screen saver and locker
Comment 2 Samuel Mannehed cendio 2016-10-07 14:37:07 CEST
Turning off "Lock" under the user's settings->Brightness&Lock->Lock get's rid of the crash message, even if you afterwards turn it back on.

The same behavior applies if a user "continues" with reporting the bug using the crash dialogue. Note that this is even if the box for "Ignore future problems of this type" is left UNCHECKED.
Comment 3 Pierre Ossman cendio 2016-10-07 15:16:34 CEST
Reported upstream:

Comment 4 Pierre Ossman cendio 2016-10-10 13:31:18 CEST
There is nothing that depends on gnome-screensaver so you can just uninstall it.
Comment 5 Pierre Ossman cendio 2016-10-10 13:34:15 CEST
Also note that mate-screensaver seems to have inherited this bug, at least judging from the code.
Comment 6 Pierre Ossman cendio 2016-10-11 11:30:29 CEST
We'll do a platform specific note for this and then we'll consider our work done.
Comment 7 Pierre Ossman cendio 2016-10-12 12:49:25 CEST
A platform specific note has been added for Ubuntu.
Comment 8 Samuel Mannehed cendio 2016-10-13 10:48:46 CEST
(In reply to comment #7)
> A platform specific note has been added for Ubuntu.

Have verified that the instruction in the platform specific notes does get rid of the crash message and that the Unity screensaver still works. ThinLinc 4.7.0rc2 on Ubuntu 16.04.

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