Originally Posted by netllama
"ATSC720" is not an X server mode. Its a custom modeline which is faling validation because its likely not in the EDID for your DFP. Your workaround with the ModeValidation option is likely the only way to address this.
i need this:
Option "ModeValidation" "AllowNon60HzDFPModes, NoEdidModes, NoMaxPClkCheck, NoEdidMaxPClkCheck, NoMaxSizeCheck, NoHorizSyncCheck, NoVertRefreshCheck, NoWidthAlignmentCheck, NoDFPNativeResolution, NoVirtualSizeCheck, NoEdidModes"
to get my beamer working without powering it on and disable all edid stuff?