On Mon, 14 Jan 2002 [EMAIL PROTECTED] wrote: > > -----Original Message----- > > From: ext Iain Thomas [mailto:[EMAIL PROTECTED]] > Hm, I have to take a look at the BIOS. Alas, I've been there some times > already (for other reasons), but I cannot recall such a setting... but > my memory may be wrong.
Hmm... Not a surprise. The i810 chipset uses DIMMs with SPD chips that contain memory timing information. The PC Chips M571 can also use 72-pin SIMMs; the only way to know what timings to use is to ask the user (or guess the worst)... > That is correct. Interesting is, that the noise ... I should stop using > the word noise as the failure is not spread uniformly over the screen, > but are more horizontal bursts. Most interesting is, that if the PC does > nothing and you don't do anything too, the screen is fine. But as soon > as the PC (no idea if it's the CPU, memory transfers, disk i/o or > something) starts working the distortion is worse as more load the PC > has. If your BIOS has a memory interleaving option, you might try fiddling with that. Remember to note down all BIOS settings before fiddling... > > Have you got the correct grade of memory installed? > > In the PC itself or in XF86Config? In XF86Config I set it to 4Megs, but > for the i810 the amount of video memory can vary. In the PC there are > 512MB, which worked fine before under windows (I know this is not an > argument that it should work under linux too :-) As in, is the physical memory modules correctly rated for the clock speed at which you're running them at? > > Try more conservative RAM settings? > I will try that :-) As I said earlier- be sure to note down the current settings before fiddling. > > Try choosing a more conservative video mode? Perhaps a lower > > refresh-rate will help. > an 8bpp mode is usable... but, you know, I cannot have a pc in my room > and know that it is only working, but not optimal :-) Refresh-rate, not colour depth. Look at the log to see what refresh-rate your monitor supports, and fiddle the Section "Monitor" to force X to pick a lower refresh rate. Windows seems to like 60Hz, for some reason, even when the computer is connected to a PnP monitor that can do 85Hz... Triv, 85Hz is more likely to show bandwidth problems that 60Hz... It's also more likely to induce headaches and other health problems. > > What about the DacSpeed setting? Look up the detected value in your > log > > file, and try specifying a slightly lower value? > That is specified in XF86Config again, correct? I will try that too. Yep. > > You have got agp support enabled, haven't you?... > Yes, it's already in the kernel :-) otherwise the chipset won't work > with X at all. Oh, I think it's supposed to do standard VGA... > Thanks for the numerous and promising hints! Actually, if memory serves, this may have cropped up before. Given that google.co.uk spiders the archives, some well placed queries might, just, yield more ideas. Words to look for probably include i810, XFree86, snow, and "screen corruption". Good luck ;-). -- Regards, [EMAIL PROTECTED] My website: http://www.iain.thomas.dial.pipex.com/ _______________________________________________ Newbie mailing list [EMAIL PROTECTED] *** To unsubscribe , or change message options, see: http://XFree86.Org/mailman/listinfo/newbie
