nice one.
If you look more closely at the file you edited you will see that it contains all the information the "X" windowing system needs including:
driver details (Device section(s))
screen resolution and colour depth (Screen section(s))
monitor type and refresh rate range (Monitor section(s))
keyboard & mouse (Input Device sections)
Drivers can usually be found on the manufacturers website (for linux) and are required for 3d accelerated graphics. It also needs to be declared in the "Driver" section of your xorg.conf file (like "nv" for nvidia) - read the "README" file for your driver for full info.
Radeon drivers aren't yet up to scratch, nvidia drivers on the other hand are a doddle.
For best results with screen resolution, read "man gtf" then try this for starters:
Code:
$ gtf 1024 768 75
# 1024x768 @ 75.00 Hz (GTF) hsync: 60.15 kHz; pclk: 81.80 MHz
Modeline "1024x768_75.00" 81.80 1024 1080 1192 1360 768 769 772 802 -HSync +Vsync
copy and paste YOUR output to the "Monitor" section of your xorg.conf, then edit it to match the resolution decalred in the "Screen" section thus:
Code:
Section "Monitor"
Modeline "1024x768" 81.80 1024 1080 1192 1360 768 769 772 802 -HSync +Vsync
if "1024x768" is mentioned here:
Code:
Subsection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubsection
Subsection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubsection
Subsection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubsection
Subsection "Display"
Depth 32
Modes "1024x768" "800x600" "640x480"
EndSubsection
As you can see there are many ways of tweaking your graphics. Enjoy!