> Section "Monitor"
> Identifier "Generic Monitor"
> HorizSync 31-130
> VertRefresh 85-160
> Option "DPMS"
> EndSection
see if you can track down some exact specs for your monitor, with a google
search. something like 'xfree86 "<your monitor model>"'; or if you're lucky,
'xfree86 "<your monitor model>" modeline' will yield a modeline for you to
put in this section.
having a better idea of your monitor's capabilities, will let X choose
better refresh rates.
for instance, here's an example from part of my XF86Config-4 file:
Section "Monitor"
Identifier "PT810-2M"
VendorName "ViewSonic"
ModelName "PT-810-2M"
HorizSync 30-96
VertRefresh 50-120
# 1440x1080@81Hz
Mode "1440x1080"
# Vid board's clock speed
DotClock 170.00
# hdisp, hsyncstart, hsyncend, and htotal
HTimings 1440 1444 1740 1864
# vdisp, vsyncstart, vsyncend, and vtotal
VTimings 1080 1084 1099 1120
EndMode
EndSection
obviously this might not work unless you have a ViewSonic PT810-2M (beware,
even a PT810-3M has slightly different capabilities); but gives some idea
how things can be laid out.
the HorizSync and VertRefresh values are the important ones; they describe
how fast the monitor can draw things on the screen.
do you have framebuffer support in your kernel? (i.e., does it show a
penguin picture in the upper left corner of the screen at boot time). if so,
change the
Driver "vesa"
line to
Driver "fbdev"
and see if that works any better.
if you have framebuffer support working, try playing with the 'fbset' tool,
and see what modes you can get out of your monitor.
Carl Soderstrom
--
Network Engineer
Real-Time Enterprises
(952) 943-8700
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