linux-kernel - Re: [PATCH] retrieve VBE EDID/DDC info independent of used video mode

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Message-Id: <1185933291.4688.11.camel@daplas>
Date:	Wed, 01 Aug 2007 09:54:51 +0800
From:	"Antonino A. Daplas" <adaplas@...il.com>
To:	Daniel Drake <dsd@...too.org>
Cc:	Zwane Mwaikambo <zwane@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Beulich <jbeulich@...ell.com>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>
Subject: Re: [PATCH] retrieve VBE EDID/DDC info independent of used video
	mode

On Tue, 2007-07-31 at 21:17 -0400, Daniel Drake wrote:
> Zwane Mwaikambo wrote:
> > Sorry if this has been hashed out before, but could you point me towards 
> > the gentoo bugzilla entry? I'm trying to understand how your setup broke. 
> > Which version VBE does your system have?
> 
> Here's the bug:
> http://bugs.gentoo.org/show_bug.cgi?id=181067
> 

Looking at the dmesg output of the working and failing kernel, it does
seem that there's no EDID block available in the failing kernel.

> How can we identify the VBE version?

If vesafb works, then it is at least VBE 2.0. To confirm, you can use X
+ the 'vesa' driver and check /var/log/X*.log. 

Tony


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