linux-kernel - [2.6.29-rc2][Suspend regression][DRM ???? bisected]

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Message-ID: <4971DFA5.2000304@numericable.fr>
Date:	Sat, 17 Jan 2009 14:39:49 +0100
From:	etienne <etienne.basset@...ericable.fr>
To:	airlied@...ux.ie, rjw@...k.pl, linux-kernel@...r.kernel.org
Subject: [2.6.29-rc2][Suspend regression][DRM ???? bisected]

hello,

With 2.6.29-rc2 (and rc1) i cannot resume from suspend to ram (echo mem 
 > /sys/power/state). Computer correctly suspends, but never wakes up 
(screens stays black and everything is unresponsive)

It has been working flawlessly in all prior kernel.
I tried a bisection and it "seems" to point to :
====================================
a9d51a5ad1154b5b20add1e8d30a5564f8aabbe9 is first bad commit
commit a9d51a5ad1154b5b20add1e8d30a5564f8aabbe9            
Author: Dave Airlie <airlied@...ux.ie>                     
Date:   Sun Dec 7 12:02:21 2008 +1000                      

    drm: reorganise start and load.

    Make sure we have the primary node so the device can add maps.

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

HOWEVER, I am not quite sure my bisect was correct; I mean, some "bad 
bisect" had a different behavior (resume produces  a garbage screen, 
computer locked)
and after bisect 57a6297e52b32ff402291a7d8fd802f83e746e52 all "bad" 
kernel wouldn't start X, init=/bin/bash booted fine but no resume

I tried  to revert but got errors
=============================
etienne@...enne-desktop:~/linux-2.6$ git revert  
a9d51a5ad1154b5b20add1e8d30a5564f8aabbe9
warning: too many files, skipping inexact rename detection
Auto-merged drivers/gpu/drm/drm_stub.c
CONFLICT (content): Merge conflict in drivers/gpu/drm/drm_stub.c
Automatic revert failed.  After resolving the conflicts,
mark the corrected paths with 'git add <paths>' or 'git rm <paths>' and 
commit the result.
=========================
Please find attached bisect log, lspci (from 2.6.28-rc8) , and .config 
(2.6.29rc2)

I have a radeon card
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 
[Radeon X300(PCIE)]
Packages :
xserver-xorg-video-radeon            
1:6.9.0+git20081003.f9826a56-0ubuntu2.1
ii  xserver-xorg                              
1:7.4~5ubuntu3                              the X.Org X 
server                                                   
ii  xserver-xorg-core                         
2:1.5.2-2ubuntu3                            Xorg X server - core 
server                   

I'm willing to test patches and ideas of course :)

Except for this regression, everything works fine for me, I migrated to 
ext4 and it "feels" a huge win especially on "rm" and fsck :))

best regards,
Etienne

View attachment "bisect-logs" of type "text/plain" (2797 bytes)

View attachment "config2.6.29" of type "text/plain" (56858 bytes)

View attachment "lspci" of type "text/plain" (10265 bytes)