Comment 17 for bug 91292

With nv my monitor was not detected, so I manually inserted horzsync/vert and got the monitor running at correct resolution.
Upon switching to nvidia drivers I lost the screen resolution in the gui.

I had to manually edit under dapper and edgy but the edited xorg was always enough for both nv and nvidia.
lspci -n | grep 0300
01:08.0 0300: 10de:0110 (rev b2)
02:00.0 0300: 10de:00f3 (rev a2)

lspci | grep VGA
01:08.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2)
02:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6200] (rev a2)

and Xorg.log
(II) NVIDIA(1): NVIDIA GPU GeForce2 MX/MX 400 at PCI:1:8:0 (GPU-1)
(--) NVIDIA(1): Memory: 32768 kBytes
(--) NVIDIA(1): VideoBIOS: 03.11.01.50.23
(--) NVIDIA(1): Interlaced video modes are not supported on this GPU
(--) NVIDIA(1): Connected display device(s) on GeForce2 MX/MX 400 at
(--) NVIDIA(1): PCI:1:8:0:
(--) NVIDIA(1): @@@ (CRT-0)
(--) NVIDIA(1): @@@ (CRT-0): 350.0 MHz maximum pixel clock
(II) NVIDIA(1): Assigned Display Device: CRT-0
(WW) NVIDIA(1): No valid modes for "1280x1024"; removing.
(WW) NVIDIA(1): No valid modes for "1152x864"; removing.
(WW) NVIDIA(1): No valid modes for "1024x768"; removing.
(WW) NVIDIA(1): No valid modes for "800x600"; removing.
(WW) NVIDIA(1): No valid modes for "640x480"; removing.
(WW) NVIDIA(1):
(WW) NVIDIA(1): Unable to validate any modes; falling back to the default mode
(WW) NVIDIA(1): "nvidia-auto-select".
(WW) NVIDIA(1):
(II) NVIDIA(1): Validated modes:
(II) NVIDIA(1): "nvidia-auto-select"
(II) NVIDIA(1): Virtual screen size determined to be 800 x 600
(**) NVIDIA(1): DPI set to (65, 65); computed from "DisplaySize" Monitor