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Date:	Sun, 30 Dec 2012 21:53:52 +0100 (CET)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Daniel Vetter <daniel.vetter@...ll.ch>
cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	David Airlie <airlied@...ux.ie>
Subject: Re: i915: GPU hang

Hi Daniel

Sorry for a late reply.

On Tue, 18 Dec 2012, Daniel Vetter wrote:

> On Mon, Dec 17, 2012 at 11:36 PM, Guennadi Liakhovetski
> <g.liakhovetski@....de> wrote:
> > Sorry, not sure what information is most appropriate here. GPU hangs from
> > time to time on this laptop, typically when running firefox on
> > graphics-intensive sites. Error log at the bottom. Distro is Debian 6.0.6
> > (squeeze), lspci
> >
> > 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
> > Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
> >         Subsystem: Acer Incorporated [ALI] Device 011f
> >         Flags: bus master, fast devsel, latency 0, IRQ 46
> >         Memory at fc000000 (64-bit, non-prefetchable) [size=1M]
> >         Memory at d0000000 (64-bit, prefetchable) [size=256M]
> >         I/O ports at 1800 [size=8]
> >         Expansion ROM at <unassigned> [disabled]
> >         Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
> >         Capabilities: [d0] Power Management version 3
> >         Kernel driver in use: i915
> >
> > kernel version 3.5.2 (yes, I'll try to upgrade). Sometimes also the
> > X-server freezes and restarts with no errors in dmesg. Is it a known
> > problem?
> 
> Upgrading to 3.7 highly recommended, if just to get the recent pile of
> gpu reset fixes - those should increase the chances that the reset
> works and your system survives.

Did that and it did work for a while, longer than the average with 3.5. I 
was already about to write a success report, but then it hung again 
yesterday. I'm not using this laptop very intensively, so, it is hard to 
collect statistics.

> Also worth testing is upgrading
> userspace gfx driver components to the latest versions (mesa +
> xf86-video-intel).

Not sure I'll be bothered - recompiling user-space is too much of a hastle 
;-) Maybe I'll just upgrade my distro altogether. Thanks for the tips 
anyway!

> If you still have gpu hangs with all that, please
> file a bug report against DRM -> DRI/Intel and please attach the
> i915_error_state from debugfs after your gpu hung).
> 
> Yours, Daniel

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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