[Gllug] Radeon

[Simon Stewart]

Not the washing powder, but the well known ATI card. I'm curious to
see if anyone else is seeing strange behaviour from their radeon
card.

I've managed to configure X to use the Radeon, and it seems reasonably
stable, but flipping back to the conole (either in text mode, or while
using the framebuffer) and back again lock the machine dead, to the
point where it doesn't respond to ctl-alt-backspace or ctl-alt-F<n>
Which is curious and irksome.

When I get home, I can post the config on a website for you to gander
at while I have a poke about with the thing. Also, the framebuffer
device seems to ignore any modedb data sent to it from the boot
prompt. Rooting through the source suggests that it should work:

>From modedb.txt

To find a suitable video mode, you just call

int __init fb_find_mode(struct fb_var_screeninfo *var,
                        struct fb_info *info, const char *mode_option,
                        const struct fb_videomode *db, unsigned int
dbsize,
                        const struct fb_videomode *default_mode,
                        unsigned int default_bpp)

and now from the command line:

sms at lauren:~$ grep fb_find_mode
/usr/src/linux/drivers/video/radeonfb.c
                fb_find_mode (&rinfo->disp.var, &rinfo->info, mode_option,
                fb_find_mode (&rinfo->disp.var, &rinfo->info, "640x480-8 at 60",

I'm passing it in, by using 

append = "video=radeonfb:1024x768"

in my lilo.conf. According to the description given in modedb.txt,
this should be fine....

Cheers,

Simon

-- 
Building translators is good clean fun.
		-- T. Cheatham

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