Click to See Complete Forum and Search --> : Video problem, works in WinXP, not in linux...


lol
09-24-2002, 01:31 AM
Hello, I am new to the forum, and new to linux. I am running dual boot operating systems, WinXP on one partition, Redhat 7.3 on the other. I have had no problems except one. btw I have a fairly old video card (4MB S3 ViRGE chipset), and a ViewSonic P220f 22" flat panel monitor.

In WinXP, I run 1600x1200 at 16 bit color, with no problem. In KDE and GNOME, I am experienceing the same problem at ANY resolution: colors are jagged, especially in web browsers and file managers. There are patches of messed up looking colors all over the screen, bad enough that I cannot read text.

I have ran Xconfigurator, it probes the monitor and finds the correct information. Still the jagged colors appear at any resolution, and any color depth, even 8bit. I have searched all over this site and various others, including google, and I am unable to solve the problem. Anyone have an idea as to what is causing this problem?

z0mbix
09-24-2002, 04:06 AM
RedHat? What's your Default Colour Depth? Look in /etc/X11/XF86Config-4, but this should tell your quickly:

[CODE]grep DefaultColorDepth /etc/X11/XF86Config-4[/B]

Aglavalin
09-24-2002, 04:34 AM
Sounds like maybe it's an old off-brand video card not fully supported? What make and model is it?

lol
09-24-2002, 12:10 PM
<cheeky_zombie> What's your Default Colour Depth? My default colour depth is 16, as it says in XF86Config-4. The problem appears in any color depth, however.

<Aglavalin> Sounds like maybe it's an old off-brand video card not fully supported? What make and model is it?The card is a Diamond Stealth 3D, not an offbrand. Although it is about 4 years old, it is not "off-brand" and should not be the problem.

Perhaps it is due to the device Redhat is using for it, which is generic. I saw something in XF86Config right above the default color depth "Omit below if generic" or something like that. How can I change the device if there even is one available for my card? Or maybe that is not even the problem...

mdwatts
09-24-2002, 05:17 PM
Try lowering the refresh rate in XF86Config.

i.e

Modes "1600x1200/70Hz"

change to

Modes "1600x1200/60Hz"

I would first advise you to read the support documentation for your video card at www.xfree86.org and also search Google for Linux for your video card model.

Try '<video card model> xf86config' as you may find configuration examples.