HOWTO: Solving YDL 6.0 resolution issue (nv driver)

I have an old dual G5 powermac with an nvidia graphics card that I’m building up for a YDL 6.0 development box.   The problem I was having was that regardless of the resolution I set my display to, I was always getting a 1440×900 @ 54Hz desktop.

The solution turns out to be relatively simple.  So, if you too are stuck with an ill-fitted desktop here is how to fix it:

1.  Log in and open a terminal window (or press <CTRL+ALT+F2> if you can’t see your desktop)

2.  edit the file /etc/X11/xorg.conf

 [billdar@mr-blue ~]$ vi /etc/X11/xorg.conf

3.  scroll down and find the Device section.  press “i” to start editing and add the following line:

  Section “Device”
Identifier      “Card0″
Driver  “nv”
Option “HWCursor” “true”
Option “ModeValidation” “NoEdidDFPMaxSizeCheck”
EndSection

4.  Press <ESC> to exit edit mode, then type “:wq” to save and quit

5.  Restart X by either rebooting or pressing <CTRL+ALT+BACKSPACE>

That should fix it.  Now you can use the display utility to set your desired resolution.