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This gave me a lot of trouble, so I thought I'd put what I found here to save someone else. Thanks goes to the MythTV wiki where I got the Monitor and much of the Device section, but I discovered that the removal of the resolution check did the trick to finally get it to work.

Tested on nvidia-drivers-100.14.19 and xorg-server-

This setup assumes that the TV is connected to the DVI port (I used a DVI-HDMI cable) of an nvidia video card.

Monitor Section

Section "Monitor"
        Identifier      "Monitor0"
        VendorName      "VIZIO"
        ModelName       "VIZIO VX37L"
        HorizSync       31-70
        VertRefresh     50-85
        Mode            "1366x768" # vfreq 59.815Hz hfreq 47.552 kHz
                        DotClock   85.500000
                        HTimings   1366 1494 1624 1798
                        VTimings   768 770 776 795
                        Flags      "-HSync" "+VSync"

Device Section

Section "Device"
        Identifier      "Card0"
        Driver          "nvidia"
        Option          "UseEDID" "false" # strangely, this does not appear to be enough
        Option          "ModeValidation"  "NoWidthAlignmentCheck, NoDFPNativeResolutionCheck"
                                          # width check necessary because 1366 % 8 != 0
                                          # res. check necessary because VIZIO does not report 1366x768
        Option          "ExactModeTimingsDVI" "true" # Respect our timings entered above

Note that if you only want some options to apply to e.g. your DFP monitor, you can add "DFP: " to the beginning of the option's argument.

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Last modified: Sun, 31 Aug 2008 07:49:00 +0000 Hits: 1,909