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Date:	Tue, 18 Dec 2012 00:15:20 +0100
From:	Daniel Vetter <>
To:	Guennadi Liakhovetski <>
	David Airlie <>
Subject: Re: i915: GPU hang

On Mon, Dec 17, 2012 at 11:36 PM, Guennadi Liakhovetski
<> 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. Also worth testing is upgrading
userspace gfx driver components to the latest versions (mesa +
xf86-video-intel). 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

Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 -
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