The STDI block of ADV7441A doesn't detect the resolution 1920x1200 @ 60Hz[CVT reduced blanking @ 154MHz] from HDMI and DVI sources and it locks to all other resolutions properly upto 1080p. If i force the ADV to take this input, discarding the STDI lock status, the video goes unstable sometimes. In general i program ADV to have a strict locking for HDMI/DVI inputs by enabling "HDMI_FRUN_EN" bit and "HDMI_FRUN_MODE" to mode 1. With this settings i always get a video for all resolutions but for 1920x1200 @ 60Hz a free run as STDI lock fails. ADV's pixel clock out,HS out and VS out looks fine though. Why isn't locking then ?.....
These are the registers programmed[slave address,register address,register value] considering the script ##GR Autographics##
:RGB WUXGA 1920x1200 Reduced Blanking _@ 60 154MHz Autographics Out through DAC: as reference: