I'm running Debian 3.1 Sarge. After first installing I couldn't increase my screen resolution beyond 800x600. But I fixed that by adding 1024x768 to the "Screen" section of XF86Config-4.

However, I am still not happy about the refresh rate and I can find no way of fixing it. In KDE, in the Configure Desktop assistant, it says that my refresh rate is 85Hz. But I can tell it's much lower by the flicker on my screen. No other screen refresh rates are listed.

My video card is on-board on a K7S41GX motherboard from ASRock. My monitor is a CTX VL700.

Below is a part of my XF86Config-4 file. I added the first line in "Monitor" but this made no difference.

Thanks for your time.

Gerald

===============XF86Config-4

Section "Monitor"
Modeline "1024x768_85.00" 94.39 1024 1088 1200 1376 768 769 772 807 -HSync +Vsync
# Modeline "1024x768@75" 85.52 1024 1056 1376 1408 768 782 792 807
Identifier "CTX:7053"
HorizSync 30-72
VertRefresh 50-160
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Generic Video Card"
Monitor "CTX:7053"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "Test" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Put the following modeline in your XF86Config in the Monitors section, and add it to your active modes in the Screen section.

Modeline "1024x768@85" 100.94 1024 1056 1432 1464 768 782 793 807

Don't blame me if you end up in smoke.

Mmmmm, interesting...

Now I'm getting a refresh rate of 86. The screen does look a little bit more stable. Can you tell me how you generated this line? Was it using the gtf command? If so, what parameters did you use?

Thanks for you help. This is the first sign of progress I've had!

Be my guest.
I used your desired refresh rate (85) with 1024x768 res.