Bug 3864

Summary: 3D applications are distorted after suspending and resuming laptop
Product: Drivers Reporter: Andrew J. Montalenti (pixelmonkey)
Component: Video(AGP)Assignee: Dave Jones (davej)
Status: REJECTED INSUFFICIENT_DATA    
Severity: normal CC: bunk
Priority: P2    
Hardware: i386   
OS: Linux   
Kernel Version: 2.6.9 Subsystem:
Regression: --- Bisected commit-id:
Attachments: tuxracer after resume
foobillard after resume
tux "inversion" after resume in tuxracer
foobillard table disappearance after resume
glxgears "inversion"

Description Andrew J. Montalenti 2004-12-04 13:07:50 UTC 
Distribution: Ubuntu 4.2 Warty
Hardware Environment: Averatec 3225
Software Environment: Linux 2.6.9

2.6.8.1 had no support for via_agp suspend/resume, but 2.6.9 added such support.
 It works (my machine no longer freezes on resume), but now there is still an
issue.  Basically, SOME (but not all) 3D applications become distorted after the
resume.  The distortion is described by the attached screenshots of foobillard
and tuxracer.

I am actually able to fix this issue by taking the following steps:

(1) shut down X (/etc/init.d/gdm stop)
(2) rmmod -f via_agp
(3) suspend my machine
(4) resume my machine
(5) modprobe via_agp
(6) start x (/etc/init.d/gdm start)

If I do those steps, the distortion goes away.  Obviously an unweildy six steps,
but doesn't it indicate that via_agp still isn't suspending or resuming
properly?  I'm not sure because I'm unfamiliar with Linux agp code.

If you want to reproduce these problems, simply suspend and resume a VIA-based
machine and try the above apps.  Strangely enough, about HALF the time the
suspend/resume cycle does NOT cause the above problems, but half the time it does.

Thanks.
Comment 1 Andrew J. Montalenti 2004-12-04 13:08:43 UTC 
Created attachment 4223 [details]
tuxracer after resume
Comment 2 Andrew J. Montalenti 2004-12-04 13:10:51 UTC 
Created attachment 4224 [details]
foobillard after resume
Comment 3 Dave Jones 2006-01-04 22:43:01 UTC 
the attachments are html files that point to a http://www.pixelmonkey.org
webserver which doesn't have those files.  Please attach the actual files, and
not forwarders like this.

Is this still a problem with 2.6.15 ?
Comment 4 Andrew J. Montalenti 2006-01-05 09:21:06 UTC 
Created attachment 6941 [details]
tux "inversion" after resume in tuxracer
Comment 5 Andrew J. Montalenti 2006-01-05 09:21:41 UTC 
Created attachment 6942 [details]
foobillard table disappearance after resume
Comment 6 Andrew J. Montalenti 2006-01-05 09:22:42 UTC 
Created attachment 6943 [details]
glxgears "inversion"
Comment 7 Andrew J. Montalenti 2006-01-05 09:24:11 UTC 
Sorry about the old links, I posted this bug awhile ago and changed web server
since then.  There are the new ones.

I'm currently running 2.6.11, and still have the same issues.  I guess you want
me to try the DRI support in 2.6.15.  I downloaded the new kernel yesterday, so
hopefully I'll give it a shot soon and tell you if the problems are still there.
Comment 8 Adrian Bunk 2006-07-10 13:41:43 UTC 
Andrew, what is the status of this issue in kernel 2.6.17?
Comment 9 Adrian Bunk 2006-08-22 15:08:40 UTC 
Please reopen this bug if it's still present in kernel 2.6.17.
Comment 10 Andrew J. Montalenti 2006-09-02 12:53:19 UTC 
Sorry guys, I actually switched away from my old laptop, so it's difficult for
me to say whether the bug still exists in 2.6.17.