*** This bug has been marked as a duplicate of bug 26053 ***

The error has been fixed (as bug#26053), but the performance issue remains on G45 now.

With the newest code, the game of openarena and ut2004 still hangs on 945GM instead of crashing.

Updating summary.  Are you including this patch in your kernel as well?  http://patchwork.kernel.org/patch/77272/

That's needed to prevent kernel hangs.

(In reply to comment #4)
> Updating summary.  Are you including this patch in your kernel as well? 
> http://patchwork.kernel.org/patch/77272/

We don't include it if it's not in drm-intel-next.
Isn't it for Ironlake?

No, this one was a bug fix.  It's been out of tree for awhile because it needed some detailed review.  It's on its way into drm-intel-next now though, since krh and ickle have acked it.

(In reply to comment #4)
> Updating summary.  Are you including this patch in your kernel as well? 
> http://patchwork.kernel.org/patch/77272/
> That's needed to prevent kernel hangs.

Is that patch will work for 945GM and other platforms other than Ironlake? I have patched it to drm-intel-next, but the openarena still hangs. 

Just tested on my 945GM machine (AspireOne), works fine under both Moblin and plain X with just an xterm running.  My bits:

  libdrm: fdcde592c2c48e143251672cf2e82debb07606bd
  mesa: dbc13401915b345df584a621b1b2aaa9030bfac5
  xserver: db687f718f760ba254ab51994769db101dc9ca3a
  xf86-video-intel: 41784e15d39c29af5a87fe8d0982bd1b0be3562d

trying with a current drm-intel-next kernel now.

Also works with drm-intel-next, current head:

commit 0d0e2fee9d6f03a481fa213c3db5171c66e7f7cc
Author: Matthew Garrett <mjg59@srcf.ucam.org>
Date:   Tue Feb 2 18:30:47 2010 +0000

    drm/i915: add dynamic performance control support for Ironlake
    drm/i915: Deobfuscate the render p-state obfuscation

What else could be different between our configs?

Created attachment 33485 [details]
dmesg file

With current code, openarena still hangs on i915 platform(AspireOne,945GM,965GM). It works well on i965 platform(G45,Piketon,calpella).

while the game hangs, pkill X and some error message as below:

gnome-screensaver: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0.
X: intel_bufmgr_gem.c:837: drm_intel_gem_bo_unreference: Assertion `((&bo_gem->refcount)->atomic) > 0' failed.

(In reply to comment #10)
> Created an attachment (id=33485) [details]
> dmesg file
> With current code, openarena still hangs on i915
> platform(AspireOne,945GM,965GM). It works well on i965
> platform(G45,Piketon,calpella).
> while the game hangs, pkill X and some error message as below:
> gnome-screensaver: Fatal IO error 11 (Resource temporarily unavailable) on X
> server :0.0.
> X: intel_bufmgr_gem.c:837: drm_intel_gem_bo_unreference: Assertion
> `((&bo_gem->refcount)->atomic) > 0' failed.

Sorry for my mistake. Openarena and ut2004 hangs on 965gm. Ut2004 hangs on calpella(openarena works fine). So that I think it works well on i965platform is wrong. It seems that only G45 and piketon is good. 

Created attachment 33555 [details]
gpu dump after openarena hangs X

Reassign to default owner...i915 stuff looks strange to me now, as buried under ironlake/snb stuff for quite long time. It looks I only have found maybe a little problem as showed in following patch, but it may not be the cause of this. Definitely need dri2 expert on this one. 

Created attachment 33875 [details] [review]
gen3 display flip cmd

Looks like mi display flip cmd for Gen3 has different format, but surely doesn't fix this bug anyway.

*** Bug 26162 has been marked as a duplicate of this bug. ***

This problem has gone with the latest code since March 6th.