Bug 12444

Summary:	X hangs following switch from radeonfb console - Bisected
Product:	Drivers	Reporter:	Graham Murray (graham)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	CLOSED CODE_FIX
Severity:	normal	CC:	rjw
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.29-rc1	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	12398
Attachments:	Xorg log following failure

Description Graham Murray 2009-01-13 14:03:48 UTC

Latest working kernel version:2.6.28
Earliest failing kernel version:2.6.29-rc1
Distribution:Gentoo
Hardware Environment:Core2 duo 6700, Radeon X300
Software Environment: Xorg-x11 7.4, xf86-video-ati 6.10, kde-4.1.3, libx11 1.1.5
Problem Description: On switching from KDE-4 with desktop effects enabled to 'text' console and back leave X hung with top, approximately 1/3, of screen corrupted, keyboard and mouse are unresponsive. SAK K returns to kdm login screen. If desktop effects are not enabled, all works OK. 

I have bisected the problem and the commit which introduces it is 7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a drm: move to kref per-master structures.

Steps to reproduce:Configure kernel for radeonfb, 
Start KDE with desktop effects enabled
Switch to 'text' console and back to X
Top, approximately 1/3, of screen is corrupted, keyboard and mouse are unresponsive. SAK K returns to kdm login screen.

Comment 1 Graham Murray 2009-01-13 14:04:46 UTC

Created attachment 19778 [details]
Xorg log following failure

Comment 2 Rafael J. Wysocki 2009-01-13 15:24:34 UTC

First-Bad-Commit : 7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a

Comment 3 Rafael J. Wysocki 2009-02-16 13:51:22 UTC

On Monday 16 February 2009, Graham Murray wrote:
> "Rafael J. Wysocki" <rjw@sisk.pl> writes:
> 
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.28.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=12444
> > Subject             : X hangs following switch from radeonfb console -
> Bisected
> > Submitter   : Graham Murray <graham@gmurray.org.uk>
> > Date                : 2009-01-13 14:03 (33 days old)
> > First-Bad-Commit:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a
> 
> I am still seeing the problem with 2.6.29-rc5

Comment 4 Rafael J. Wysocki 2009-02-16 13:51:39 UTC

Caused by:

commit 7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a
Author: Dave Airlie <airlied@redhat.com>
Date:   Fri Nov 28 14:22:24 2008 +1000

    drm: move to kref per-master structures.

    Signed-off-by: Dave Airlie <airlied@redhat.com>

Comment 5 Rafael J. Wysocki 2009-02-16 13:52:06 UTC

First-Bad-Commit : 7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a

Comment 6 Rafael J. Wysocki 2009-03-07 15:03:56 UTC

On Saturday 07 March 2009, Graham Murray wrote:
> "Rafael J. Wysocki" <rjw@sisk.pl> writes:
> 
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.28.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=12444
> > Subject             : X hangs following switch from radeonfb console -
> Bisected
> > Submitter   : Graham Murray <graham@gmurray.org.uk>
> > Date                : 2009-01-13 14:03 (50 days old)
> 
> I am still seeing the same symptoms in 2.6.29-rc7-0003-g559595a.

Comment 7 Rafael J. Wysocki 2009-03-15 03:46:04 UTC

On Sunday 15 March 2009, Graham Murray wrote:
> I am no longer seeing this problem with 2.6.29-rc8-00090g326d851, but I
> have also upgrade various parts of X including the radeon driver to
> version 6.12.0. 
> 
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.28.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=12444
> > Subject             : X hangs following switch from radeonfb console -
> Bisected
> > Submitter   : Graham Murray <graham@gmurray.org.uk>
> > Date                : 2009-01-13 14:03 (61 days old)