linux-kernel - Re: Kernel command line for a specific framebuffer console driver

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Message-Id: <200701132123.23866.juergen127@kreuzholzen.de>
Date:	Sat, 13 Jan 2007 21:23:23 +0100
From:	Juergen Beisert <juergen127@...uzholzen.de>
To:	linux-kernel@...r.kernel.org
Cc:	Alexey Dobriyan <adobriyan@...il.com>
Subject: Re: Kernel command line for a specific framebuffer console driver

Hi Alexey,

On Friday 12 January 2007 20:36, Alexey Dobriyan wrote:
> On Fri, Jan 12, 2007 at 01:43:42PM +0100, Juergen Beisert wrote:
> > does someone know how to forward a kernel command line option to
> > configure the AMD Geode GX1 framebuffer?
> >
> > I tried with "video=gx1fb:1024x768-16@60" but it does not work. On
> > another machine with an SIS framebuffer the line
> > "video=sisfb:1280x1024-8@60" works as expected.
> >
> > Any ideas?
>
> Yes. You try this patch and report whether it works or not.

Thank you very much. Yes it works. I tried these kernel parameters:

1) video=gx1fb:mode:1280x1024-16@60,crt:1
  -> CRT was active, 160x64 console
2) video=gx1fb:mode:1024x768-16@60,crt:1
  -> CRT was active, 128x48 console
3) video=gx1fb:mode:800x600-16@60,crt:0,panel:800x600
  -> CRT was disabled, 100x37 console
4) video=gx1fb:mode:1024x768-16@60,crt:0,panel:800x600
  -> CRT was disabled, 80x25 console

Sorry, I have no flatpanel, so I cannot test if the "panel" option works 
correctly. But somethings changes when I tried different values (see 3 and 
4).

Regards
Juergen
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