linux-kernel - Re: i915 not working on Dell e6410

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Date:	Mon, 25 Feb 2013 14:49:07 +0000
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Felipe Balbi <balbi@...com>
Cc:	Daniel Vetter <daniel.vetter@...ll.ch>,
	David Airlie <airlied@...ux.ie>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: i915 not working on Dell e6410

On Mon, Feb 25, 2013 at 04:43:12PM +0200, Felipe Balbi wrote:
> Hi,
> 
> On Mon, Feb 25, 2013 at 02:39:18PM +0000, Chris Wilson wrote:
> > On Mon, Feb 25, 2013 at 04:24:11PM +0200, Felipe Balbi wrote:
> > > Hi folks,
> > > 
> > > I have a Dell e6410 whose framebuffer gets corrupted with v3.7.9 and
> > > v3.8.0 but works fine with v3.6.11.
> > > 
> > > Below you can find lspci and my .config, maybe I'm missing something ?

That looks like https://bugzilla.freedesktop.org/show_bug.cgi?id=60391
which is fixed by

commit da88a5f7f7d434e2cde1b3e19d952e6d84533662
Author: Chris Wilson <chris@...is-wilson.co.uk>
Date:   Wed Feb 13 09:31:53 2013 +0000

    drm/i915: Disable WC PTE updates to w/a buggy IOMMU on ILK

or by passing intel_iommu=off on the commandline.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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