Re: LiveCD bootloader

[Teresa e Junior <teresaejunior@gmail.com>]

On Wed, 8 Sep 2010 14:54:25 +0930
Brendan Trotter <btrotter@gmail.com> wrote:

> Hi,
> 
> On Wed, Sep 8, 2010 at 2:39 PM, Brendan Trotter <btrotter@gmail.com>
> wrote:
> > GRUB and Linux use "video mode numbers" to request a video mode.
> > These video mode numbers can be different for different video
> > cards. Early versions of VBE did define some standard mode numbers,
> > but these became obsolete in VBE version 2.0 (back in 1994).
> > Software written after 1994 shouldn't rely on these obsolete video
> > mode numbers. For example, if you're lucky mode 0x118 might be
> > 1024*768 with 24-BPP, but nothing guarantees that anymore, and it
> > could easily be any other video mode. There's also no guarantee
> > that the the video card supports the video mode (e.g. a lot of
> > video cards only support 32-BPP video modes and don't support any
> > 24-BPP video modes; and some only support 24-BPP video modes and
> > not 32-BPP video modes; and the same is true for 15-BPP vs. 16-BPP).
> 
> My apologies.
> 
> It seems GRUB2 has improved a lot, and doesn't rely on the obsolete
> "standard video mode numbers" anymore. Except for problems caused by
> video modes that are supported by the video card but not supported by
> the monitor; it's mostly only a problem with Linux itself now.
> 
> 
> Cheers,
> 
> Brendan
> 
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Thanks! We have to set 640x480 as default anyway...