Hello folks

I successfully installed Linux Debian (kernel 2.6.13) unstable, with Xorg for X, KDE 3.3
on my ACER TravelMate 4001WLCi. However I have the following problem trying to
use an external video projector (to make presentations): refresh rates, or resolution are not sincronized
probably resulting in blinking of the external video projector connected to my laptop. I tried all available
modes like 1280x1024 etc via my KDE configuration and it does not help. The rate is 60 Hz and I do not know if I can and how to change it if necessary. My xorg.config file looks like:
Section "Device"
Identifier "ATI Technologies, Inc. RV350 [Mobility Radeon 9600 M10]"
Driver "ati"
BusID "PCI:1:0:0"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 30-65
VertRefresh 50-75
EndSection

Section "Screen"
Identifier "Default Screen"
Device "ATI Technologies, Inc. RV350 [Mobility Radeon 9600 M10]"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1280x1024"
EndSubSection
SubSection "Display"
Depth 4
Modes "1280x1024"
EndSubSection
<skip>


Does any body can help me with this?

Thank you in advance,

Dmitry