From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Blank screen while loading AMD/ATI graphics driver
 (fglrx) in Dom0 (Linux 3.0/3.2) with Xen 4.1/4.2
Date: Tue, 13 Mar 2012 18:35:17 -0400
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To: sahilsuneja <sahilsuneja@gmail.com>
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On Tue, Mar 13, 2012 at 03:31:03PM -0700, sahilsuneja wrote:
> > Right. That is b/c the built-in drivers - radeon and nouveau work without
> > any issues. Third-party drivers are a different case and require some
> > tweaking. 
> 
> Hmm, and I am guessing in the discrete graphics card case, fglrx driver
> loading doesn't need to access the low 1MB mem region to obtain the "video
> bios signature" as it gets this from the pci mapped memory region instead? 

The other way around.