If none of the GUI applications work, you could edit your /etc/X11/xorg.conf to include explicit DisplaySize, like this:
Quote:
Section "Monitor"
Option "CalcAlgorithm" "UseFrameBufferTiming"
DisplaySize 432 324
HorizSync 30-81
Identifier "Monitor[0]"
ModelName "SyncMaster"
Option "DPMS"
VendorName "Samsung"
VertRefresh 56-75
UseModes "Modes[0]"
EndSection
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DisplaySize is the size of your screen in mm. It can be calculated by multiplying your native screen resolution with the dotpitch of your monitor. In the above example: 1600x1200 and .255 dotpitch >
1600x0.255=432 and 1200x0.255=324. This isn't required in most cases, though.
Of course, it may also be a video driver issue. I have noticed before that all my screens come out wrong (too much to the right) until I install the proprietary nvidia or ATI drivers rather than the open-source ones.
You should also be able to resize your screen by using the buttons on your monitor.