Date: Thu, 17 Nov 2005 01:01:44 +0100
From: David =?iso-8859-1?Q?H=E4rdeman?= <david@2gen.com>
To: linux-kernel@vger.kernel.org
Subject: X and intelfb fight over videomode
Message-ID: <20051117000144.GA29144@hardeman.nu>
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Using the information from this thread:
http://marc.theaimsgroup.com/?t=112593256400003&r=1&w=2

I've now compiled a kernel with the intelfb and fbcon drivers linked in 
(no other fb drivers). By booting the kernel with vga=0x318 I get a 
1024x768@16bpp console and drm/agp also seems happy.

However, as soon as X starts, the following message is printed to the 
kernel log:

mtrr: base(0xe0020000) is not aligned on a size(0x300000) boundary
[drm:drm_unlock] *ERROR* Process 3013 using kernel context 0

Everything seems to work in X though. The first time that I switch 
from X to a vc, the screen stays black for a few seconds before I get 
the VC and then I get this:

intelfb: Changing the video mode is not supported.
intelfb: ring buffer : space: 61488 wanted 65472
intelfb: lockup - turning off hardware acceleration

I have X set to also use 1024x768@16bpp, what else do I need to do to 
make sure that intelfb and X play nice together?

Re,
David

PS
Please CC me on any replies

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