Re: GGI Project Unhappy On Linux
H. Peter Anvin (hpa@transmeta.com)
27 Mar 1998 05:07:27 GMT
Followup to: <Pine.LNX.3.96.980327141501.12857A-100000@canuck.gen.nz>
By author: "J. S. Connell" <ankh@canuck.gen.nz>
In newsgroup: linux.dev.kernel
>
> As Alan Cox has stated, and as I know from personal experience[1]: you can
> go from a known video state to a known video state, and you can go from a
> known video state to an unknown (i.e., garbage) video state. You cannot,
> short of resetting the card (which typically takes a reboot), go from an
> unknown state to a known state. It simply doesn't work that way. Why?
> Because the people who designed the VGA video hardware were idiots (IMHO).
> That's why kernel-arbitrated video mode changing is needed, and that's what
> KGI is. As Varg pointed out so eloquently, KGI is a leetle teeny tiny
> piece of GGI that needs to be in the kernel. The rest doesn't.
>
Actually, the people who designed VGA were actually very careful to
*not* make this mistake (that had previously been made in EGA);
unfortunately, some of the people that copied and extended their
design weren't that careful.
-hpa
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