[Linux-fbdev-devel] Re: Mixing g400 dualhead and old Millennium.

[Petr V. <van...@vc...>]

On Sun, Oct 13, 2002 at 06:07:46PM +0200, Carlo E. Prelz wrote:
> 	Subject: Re: Mixing g400 dualhead and old Millennium.
> 	Date: dom, ott 13, 2002 at 04:56:04 +0200
> 
> Quoting Petr Vandrovec (van...@vc...):
> 
> > If you could print return value from register_framebuffer in 
> > matroxfb_dh_regit in matroxfb_crtc2.c, maybe it could reveal
> > problem. Maybe that using non-ac kernel fixes problem too.
> 
> It never reaches register_framebuffer. It leaves dh_regit at tese
> lines:
> 
>         else if (ACCESS_FBINFO(video.len) < mem) {
>                 kfree(d);
>                 return -ENOMEM;
>         }
> 
> ACCESS_FBINFO(video.len) is 2097152. Mem is 8388608.

Really... I did not notice in your original email that it
reports G400 as 2MB only device... Can you send me
output of 'lspci -s X:Y.Z -vvvxxx' (where X:Y.Z is
your G400 device, probably 1:00.0 or 2:00.0) with
2.4.19-pre10, and with Alan version? Alan's version
uses data from BIOS to set memory type, and it
apparently made mistake.

In Alan's kernel you should have option to enable procfs
interface - can you enable it and send me also
contents of /proc/driver/mga/fb*/pins. It is binary
file, if you want, you can parse it by matrox_pins
from ftp://platan.vc.cvut.cz/pub/linux/matrox-latest.
				Thanks,
					Petr Vandrovec
					van...@vc...