Ok, mine is a funny story.
I'm using a Panasonic Plasma TH-42PZ86. I don't have any modelines in my xorg.conf
Only these option in the "Device" section:
Code:
Option "DynamicTwinView" "false"
Option "ExactModeTimingsDVI" "true"
Option "AddARGBGLXVisuals" "true"
Option "FlatPanelProperties" "Scaling = native"
In any case, xorg detects my 1920x1080 configuration at 60,50 and 24 Hz (the ones my TV supports). Somehow ubuntu jaunty does not let me change resolution from any GUI application (neither nvidia config app) but XBMC can change between them through xrandr if I select the refreshrate change. No problem whatsoever apart from this judder problem in vdpau.
Now, after motd2k post I tried to set some modelines and followed the guide in this
post. Setting xorg to debug and show valid modes.. shows... no valid modes at 1920x1080 in my TV!!
WTF!!! Any ideas why they are not valid but the TV uses them