Ok, then it seems you need a proper xorg.conf. I guess so far there is no file
/etc/X11/xorg.conf on your system. Create one according to the how-to I linked in my previous post!
I'm not absolutely sure how it has to look like, but maybe this could work (watch out for the #comments!):
- Code: Select all
Section "Device"
Identifier "Radeon Xpress 200M" #just a name, doesn't matter if it's always the same
Driver "ati"
BusID "PCI:1:0:0"
Option "XAANoOffscreenPixmaps" #no idea what this does, maybe skip it
EndSection
Section "Monitor"
Identifier "Generic Monitor
Option "DPMS"
HorizSync 28-72 #not sure if this value is correct, maybe likely not (will handle that later)
VertRefresh 43-60 # same here
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Radeon Xpress 200M"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x800" "1024x768"
EndSubSection
EndSection
Section "DRI"
Mode 0666 #not sure what this does, but seems to be important
EndSection
Section "Extensions"
Option "Composite" "Enable" #same here
EndSection
Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection
Ok, back to those frequencies in Section "Monitor":
You can find the correct frequencies with
cvt. This should be what you need:
- Code: Select all
cvt 1280 800 60
# 1280x800 59.81 Hz (CVT 1.02MA) hsync: 49.70 kHz; pclk: 83.50 MHz
Modeline "1280x800_60.00" 83.50 1280 1352 1480 1680 800 803 809 831 -hsync +vsync
vsync (59,81Hz) and hsync (49,80kHz) are within the ranges specified above. So it should work.