forwarded 661696 https://bugzilla.kernel.org/show_bug.cgi?id=42839
quit
(cc-ing Stefan Bader since he maintains the linux-2.6.32.y-drm33.z tree)
Hi again,
Lukas Anzinger wrote[1]:
> During a refactoring of the i915 driver a regression has been introduced
[e70236a8d3d0]
> For some chipsets the wrong fifo size is determined which results in
> lot's of pixel errors when starting the xserver and choosing 800x600
> as a resolution. If another resolution is used (eg. 1024x768 or
> 1280x1024), I don't encounter this problem.
[...]
Jonathan Nieder wrote:
> Lukas Anzinger wrote:
>> looks good to me.
>
> Do you mean that the patch looks good or that you've tried applying it
> and the behavior was bad before and good afterward?
Ping. Have you tested this patch?
From: Adam Jackson <[email protected]>
Date: Fri, 16 Apr 2010 18:20:57 -0400
Subject: drm/i915: Attempt to fix watermark setup on 85x (v2)
commit 8f4695ed1c9e068772bcce4cd4ff03f88d57a008 upstream.
IS_MOBILE() catches 85x, so we'd always try to use the 9xx FIFO sizing;
since there's an explicit 85x version, this seems wrong.
v2: Handle 830m correctly too.
Signed-off-by: Adam Jackson <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Signed-off-by: Eric Anholt <[email protected]>
Signed-off-by: Jonathan Nieder <[email protected]>
In suspense,
Jonathan
[1] http://bugs.debian.org/661696
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