855resolution patch and linux framebuffer

855resolution patch and linux framebuffer

[Eric Schoeller]

I have been working recently with the framebuffer driver vesafb and 
kernel 2.6.14. I am using the Intel 855GME chipset on a dell 700m 
laptop. The native resolution of the LCD on this device is 1280x800 - 
but can only be achieved after using Alain Porier's 855resolution patch 
to enter the correct mode into the chipset's BIOS. The sad thing is that 
I have to do this on every boot - and thus I have to run it before I 
load the vesafb driver. This procedure is undesirable.
Is there a way similar functionality of this 855resolution patch could 
be integrated into the kernel in some way?
I think it would be very useful for everyone who is using this chipset 
and is dealing with having to enter modes into the BIOS in similar fashions.

-eric



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Re: 855resolution patch and linux framebuffer

[Antonino A. Daplas]

Eric Schoeller wrote:
> I have been working recently with the framebuffer driver vesafb and
> kernel 2.6.14. I am using the Intel 855GME chipset on a dell 700m
> laptop. The native resolution of the LCD on this device is 1280x800 -
> but can only be achieved after using Alain Porier's 855resolution patch
> to enter the correct mode into the chipset's BIOS. The sad thing is that
> I have to do this on every boot - and thus I have to run it before I
> load the vesafb driver. This procedure is undesirable.
> Is there a way similar functionality of this 855resolution patch could
> be integrated into the kernel in some way?
> I think it would be very useful for everyone who is using this chipset
> and is dealing with having to enter modes into the BIOS in similar
> fashions.
> 

It would require BIOS calls, and we don't have any facility yet to make
BIOS calls in the kernel.

Tony



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RE: 855resolution patch and linux framebuffer

[Eric Schoeller]

Would you, or anyone else be able to recommend an alternative?

Thanks


-----Original Message-----
From: linux-fbdev-devel-admin@lists.sourceforge.net
[mailto:linux-fbdev-devel-admin@lists.sourceforge.net] On Behalf Of Antonino
A. Daplas
Sent: Friday, January 06, 2006 6:27 PM
To: linux-fbdev-devel@lists.sourceforge.net
Subject: Re: [Linux-fbdev-devel] 855resolution patch and linux framebuffer

Eric Schoeller wrote:
> I have been working recently with the framebuffer driver vesafb and
> kernel 2.6.14. I am using the Intel 855GME chipset on a dell 700m
> laptop. The native resolution of the LCD on this device is 1280x800 -
> but can only be achieved after using Alain Porier's 855resolution patch
> to enter the correct mode into the chipset's BIOS. The sad thing is that
> I have to do this on every boot - and thus I have to run it before I
> load the vesafb driver. This procedure is undesirable.
> Is there a way similar functionality of this 855resolution patch could
> be integrated into the kernel in some way?
> I think it would be very useful for everyone who is using this chipset
> and is dealing with having to enter modes into the BIOS in similar
> fashions.
> 

It would require BIOS calls, and we don't have any facility yet to make
BIOS calls in the kernel.

Tony



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