* VESA in console
@ 2002-09-23 23:16 Michael
2002-09-23 23:18 ` Bart Oldeman
0 siblings, 1 reply; 3+ messages in thread
From: Michael @ 2002-09-23 23:16 UTC (permalink / raw)
To: linux-msdos
Are there any special procedures needed to get VESA working in the linux console,
other than a kernel with VESA support(and a VESA resoulution)
In the console i get a standard no VESA driver available, and in X running with xdosemu it works fine.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: VESA in console
2002-09-23 23:16 VESA in console Michael
@ 2002-09-23 23:18 ` Bart Oldeman
2002-09-24 4:03 ` Michael
0 siblings, 1 reply; 3+ messages in thread
From: Bart Oldeman @ 2002-09-23 23:18 UTC (permalink / raw)
To: Michael; +Cc: linux-msdos
On Tue, 24 Sep 2002, Michael wrote:
> Are there any special procedures needed to get VESA working in the linux console,
yes.
> other than a kernel with VESA support(and a VESA resoulution)
well the way it works now it completely bypasses the kernel. AFAIK with
a kernel with VESA (lfb) support you can just switch to a preset
resolution at boot time and NEVER again.
> In the console i get a standard no VESA driver available, and in X running with xdosemu it works fine.
Yes. In X, VESA is provided by DOSEMU itself, and then works using
*emulated* registers. In the console, VESA is provided by the card's
video BIOS, using *real* registers. This is why xdosemu works for
everyone in the same way but the console stuff is hardware dependent.
Bart
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: VESA in console
2002-09-23 23:18 ` Bart Oldeman
@ 2002-09-24 4:03 ` Michael
0 siblings, 0 replies; 3+ messages in thread
From: Michael @ 2002-09-24 4:03 UTC (permalink / raw)
To: Bart Oldeman; +Cc: linux-msdos
On Tue, 24 Sep 2002 00:18:49 +0100 (BST)
Bart Oldeman <Bart.Oldeman@bristol.ac.uk> wrote:
> > other than a kernel with VESA support(and a VESA resoulution)
>
> well the way it works now it completely bypasses the kernel. AFAIK with
> a kernel with VESA (lfb) support you can just switch to a preset
> resolution at boot time and NEVER again.
Actually i've got a utillitie called `vidmode` that will let me change the VESA res on the fly.
> > In the console i get a standard no VESA driver available, and in X running with xdosemu it works fine.
>
> Yes. In X, VESA is provided by DOSEMU itself, and then works using
> *emulated* registers. In the console, VESA is provided by the card's
> video BIOS, using *real* registers. This is why xdosemu works for
> everyone in the same way but the console stuff is hardware dependent.
So i'll have no luck with just a "generic VESA 2.0 kernel driver"?
And have to use one of the card specific drivers?
As for dosemu, do i need to specify anything if everything else is set up properly?
(BTW: Console VESA would be faster, since it's not emulated?)
Thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
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