Re: GRUB and VESA Bug

On 15-May-05, at 6:45 PM, Clemens Brust wrote:
> I've found out that GRUB doesn't set a VESA mode, even if this is set 
> to required in the flags.
> My kernel told me that the 11th bit in the flags wasn't set and the 
> vbe_mode, vbe_mode_info and vbe_control_info fields contained nothing. 
> Here is the kernel's output:

This part of multiboot isn't implemented in Grub.

I have a patch (we use Grub for a course that I teach here, and have 
the students get grub to set a graphics mode for them) available at 
http://www.student.cs.uwaterloo.ca/~cs452/grub/.

It's not 100% as clean as I'd like, and that's why I haven't sent it 
upstream yet. It's based off of Durand Miller's patch for his spoon 
microkernel (http://www.djm.co.za/spoon/grub/vbe.php), but unlike the 
spoon patch honours the multiboot values and does not rely on 
specifying a VBE mode in the grub configuration. He gets the credit for 
the heavy lifting though, if there was any.

Hope that helps. Hope I (or someone else?) find time to clean this up 
some day...

PS: I believe that patch also includes some other miscellaneous stuff 
to make the netboot drivers work for us. YMMV.

--
Stefanus Du Toit <sjdutoit@xxxxxxxxxxxxxxxx>
  Graduate Student
  Computer Graphics Lab, University of Waterloo