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From: Diego Calleja <diegocg@gmail.com>
To: Dave Airlie <airlied@linux.ie>
Subject: "Can not ioremap virtual address" (was Re: [git pull] drm)
Date: Fri, 13 Feb 2009 18:28:22 +0100
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Cc: torvalds@linux-foundation.org, dri-devel@lists.sf.net,
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On Lunes 09 Febrero 2009 09:30:57 Dave Airlie escribió:
> Hi Linus,
>
> Please pull the 'drm-fixes' branch from
> ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git
> drm-fixes

A commit from this merge is causing an error in my machine:

commit ab657db12d7020629f26f30d287558a8d0e32b41
Author: Eric Anholt <eric@anholt.net>
Date:   Fri Jan 23 12:57:47 2009 -0800

    drm/i915: Set up an MTRR covering the GTT at driver load.


(found using bisection)

The error:
[   20.270956] [drm] Initialized i915 1.6.0 20080730 on minor 0
[   20.289492] [drm:i915_initialize] *ERROR* can not ioremap virtual address 
for ring buffer

And in Xorg.0.log: (II) intel(0): direct rendering: Failed


But...excluding that printk, everything works OK, including "direct rendering: 
Yes"...

There's a related thread here: http://lkml.org/lkml/2009/2/13/139