I wonder Ubuntu system, it already installed in other CPU and
notebook.
When I have installed Ubuntu 7.10 to Quantel T-8 (I can not install
8.10, cause memory only 256MB), I have problem with screen resolution.
There is no option 1024 x 600 of screen resolution. When I adjusted to
1024 x 768 or 800 x 600 dpi, some lines on screen are hidden and when
600 x 480, the display shown too big. May someone help me, how to adjust
screen resolution with 1024 x 600 dpi and 16:9 screen scale? I send
xorg.conf file below. Thank you.

Section "Device"
Identifier "Generic Video Card"
Driver "vesa"
BusID "PCI:0:1:1"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 28-51
VertRefresh 43-60
EndSection

Your problem lies in having the generic drivers rather than ones specific to
your graphics card. Without the proper driver you cannot force it beyond what
you have simply by changing the resolution. You are stuck with basic vesa until
you install the restricted driver for your card.

You need to find out the chipset and post it for specific help.