Comment 3 for bug 228147

Greetings,

This is also an issue for me with Kubuntu 8.04.

When an application requests an 800x600 mode, the monitor only displays ‘Out of range’, xrandr -s 800x600 causes the same.

After setting the Nvidia parameter ‘DynamicTwinView’ to false, here’s what xrandr -q shows:
Screen 0: minimum 320 x 240, current 1280 x 1024, maximum 1280 x 1024
default connected 1280x1024+0+0 0mm x 0mm
   1280x1024 60.0* 75.0
   1024x768 75.0 70.0 60.0
   1152x864 75.0
   800x600 130.0 120.0 75.0 72.0 60.0 56.0
   640x480 120.0 75.0 73.0 60.0
   1280x960 60.0
and so on.

The figure of 130.0 is suspicious for me. Does X try to set the refresh rate to 130 Hz for the 800x600 mode? I have set the HorizSync and VertRefresh parameters, but they don’t seem to be taken into account.

Here’s what xvidtune shows while in the strange mode:
~ :) xrandr -s 800x600; xvidtune -show; xrandr -s 0
"800x600" 87.75 800 832 928 1080 600 300 301 312 +hsync +vsync doublescan

(I understand not a single figure apart of 800x600 :-)

My hardware is Nvidia 6600GT, LG L1730B monitor. Xorg.0.log shows nothing interesting:
II) NVIDIA(0): Setting mode "800x600"
(II) NVIDIA(0): Setting mode "1280x1024"
(II) NVIDIA(0): Setting mode "800x600_60"
(II) NVIDIA(0): Setting mode "1280x1024"
(II) NVIDIA(0): Setting mode "800x600"
(II) NVIDIA(0): Setting mode "1280x1024"