Bug 61822

Created attachment 76782 [details]
Xorg.0.log

Xorg log, showing intermittent crash when running atop 3.8.x kernel.

might be a duplicate of bug 61182.

(In reply to comment #2)
> might be a duplicate of bug 61182.

I'm not using KWin, and Fedora 18 has upgraded to:
mesa-dri-drivers-9.0.3-1.fc18.i686

Also, my stack trace points consistently to a function called OsLookupColor().

(In reply to comment #3)
> (In reply to comment #2)
> > might be a duplicate of bug 61182.
> 
> I'm not using KWin, and Fedora 18 has upgraded to:
> mesa-dri-drivers-9.0.3-1.fc18.i686
> 
> Also, my stack trace points consistently to a function called
> OsLookupColor().

Can you start in runlevel 3 and then start X in gdb and get a proper backtrace?
http://wiki.x.org/wiki/Development/Documentation/ServerDebugging

(In reply to comment #4)
> Can you start in runlevel 3 and then start X in gdb and get a proper
> backtrace?
> http://wiki.x.org/wiki/Development/Documentation/ServerDebugging

Interesting idea, except that my intermittent crash has gone away again for now. I'm starting to think "uninitialised memory error". Has anyone ever run valgrind for Xorg?

(In reply to comment #5)
> Has anyone ever run valgrind for Xorg?

Lots of people have. Basically the same story as running Xorg in gdb.

(In reply to comment #3)
> Also, my stack trace points consistently to a function called
> OsLookupColor().

I wouldn't put too much weight on that yet: The backtrace in the attached log file looks completely bogus.

I was trying to generate a gdb backtrace tonight while watching TV when it finally occurred to me... that this TV is connected to my laptop's docking station via an HDMI cable and a DVI adaptor! (Doh!)

The laptop/docking station combination boots fine when the TV is disconnected or switched off. However, Xorg crashes when the TV is connected and even just on stand-by.

Created attachment 77344 [details]
xorg.conf for laptop/docking station

The HDTV device has a full 1920x1080 screen, connected via a HDMI cable and a DVI adaptor to the docking station's HD4650 device. This combination crashes when the laptop tries to start Xorg on top of a 3.8.x kernel, although starts Xorg successfully on a 3.7.x kernel.

*** This bug has been marked as a duplicate of bug 61182 ***

This bug is still happening for me with up-to-date Fedora 18, vanilla 3.9.8 kernel and xorg-drv-ati from git:

commit 3626ab147b6749a355e7d21710447f13b9796c77
Author: Leo Liu <leo.liu@amd.com>
Date:   Fri Jun 14 10:27:20 2013 -0400

    radeon: fix a memory leak in get_modes() callback.

Fedora's Mesa package is:
mesa-dri-drivers-9.2-0.7.20130528.fc18.x86_64

And cogl has just been updated too:
cogl-1.12.2-2.fc18.x86_64

But Xorg is still crashing for me if I try to boot while HDTV connected to the (secondary) HD4650 card is turned on.

Created attachment 81831 [details]
Xorg crash log

Created attachment 81832 [details]
dmesg log from 3.9.8

Created attachment 81833 [details]
xorg.conf

Created attachment 82426 [details]
Xorg log with UVD and Fedora 19

I have upgraded to Fedora 19, and a vanilla 3.10.1 kernel (with new _rlc and _uvd firmware). The UVD is initialising correctly (apparently), but Xorg still refuses to start if the HDTV is on.

But this time, Xorg doesn't crash. I have attached the new log file.

Created attachment 83716 [details]
Xorg.0.log file - WORKING

I've just upgraded my xorg driver, having seen this commit go in:

commit 4de9356a2900ae0fb380a2350791ef045629cd05
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Mon Aug 5 17:57:16 2013 -0400

    radeon: fix naming clashes with multiple GPUs (v3)

And suddenly I'm seeing X output on my HDTV :-).