okay so I got the 1080i going again. It looks alright, but it still seems slower to respond, especially when scrolling through media. Using Top, I can see that Xorg is consistently using 93-97% of the CPU. Andrew, is there something I can change here to reduce the CPU demand?
the relevant part of my xorg.conf is as follows:
Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
DisplaySize 348 196
Modeline "1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1094 1124 interlace +hsync +vsync
HorizSync 20-500
VertRefresh 59-61
EndSection
Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation NV44 [GeForce 6200 TurboCache(TM)]"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Modes "1920x1080"
Virtual 1920 1080
EndSubSection
Option "XvmcUsesTextures" "true"
Option "renderAccel" "true"
Option "NoDDCValue"
Option "UseEDID" "false"
Option "ExactModeTimingsDVI" "true"
Option "NoLogo" "true"
Option "NoBandWidthTest" "true"
Option "ModeValidation" "NoDFPNativeResolutionCheck, NoEdidMaxPClkCheck, NoMaxPClkCheck, AllowInterlacedModes, AllowNon60HzDFPModes"
Option "DynamicTwinView" "false"
Option "UseEvents" "true"
Option "AllowGLXWithComposite" "true"
Option "AddARGBGLXVisuals" "true"
Option "TVStandard" "1080i"
EndSection