ATi mach64 + LCD panel

[Serge]

Greg Trounson wrote:
> Gidday,
> 
> I have a motherboard with an onboard Mach64 chip:
> 01:07.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
> 
> I am using this with a 17" 1280x1024 LCD panel.
> 
> Now when I launch X.Org using the recommended 'ati' driver, any screen 
> updates are terribly slow, not only for 3D but also 2D.  Just scrolling 
> a web browser window is unbearably slow (~3fps).  Switching to the vesa 
> driver reveals that the graphics chip is quite fast, so the ati driver 
> is clearly defective.
> 
> The problem with the VESA driver, however is that it doesn't recognise 
> 1280x1024 at 60Hz, instead opting for 1280x1024 at 61Hz, which no known LCD 
> panel can display.
> 
> Unfortunately the vesa driver ignores all "NoDDC" "IgnoreEDID" and 
> ModeLine directives.  My desired mode is listed in /var/log/Xorg.0.log 
> as a "Future Video Mode" so I assume that is not supported at this time?
> 
> So at the moment we seem to have two options: Fast vesa driver at 
> 1024x768 or slow ati driver at 1280x1024.  Neither of which is really 
> acceptable.
> 
> Any ideas?
> 
> thanks,
> Greg
> 



Have you tried the drivers from http://www.retinalburn.net/linux/ ? I 
use them on an old box I have that still runs RH9. Not sure how they 
work with Xorg but should be worth a try if you are desperate.

Serge