Re: VESAFB CUSTOM RESOLUTION

From: H. Peter Anvin
Date: Wed Jul 18 2007 - 13:39:18 EST


Antonino A. Daplas wrote:
>
>> What about the VBE 3.0 arbitrary vertical refresh rate thing?
>
> This is not implemented by the video-vesa.c because it will require
> complex calculations of mode timings (such as with GTF) to be done
> before starting the kernel. However, uvesafb probably does.
>

There is no real reason video-vesa.c couldn't do those calculations, but
it would have to get the information from the command line proper and
not just from the 16-bit vga= mode number. That is a minor
complication, but not significant (the new setup code has a proper
command line parser.)

The desirability of it is another matter, especially since it wouldn't
let any switching happen at runtime.

-hpa
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