I try to play sound using RV635->DVI->adapter->HDMI->TV LCD with latest version of audio patch(es). I achieved both: success and failure :) In my xorg.conf I used Option "Audio" "true" Option "HDMI" "all" I also tried using fglrx but it failed totally - I was not able to hear anything. Situation 1 "good": My small LCD connected to DVI-I_2/analog My TV LCD connected to DVI-I_1/digital Audio works perfect in that case. I experience problem with detecting right DPI but it shouldn't be audio releated. Generally I'm happy with that configuration Situation 2 "bad": My small LCD connected to DVI-I_1/analog My TV LCD connected to DVI-I_2/digital DPI detected right but I have problems playing audio by HDMI. I can hear the sound but it plays with pauses and too fast/slow. Only something about 70% of every second is filled by sound - hope you understand that. I made dumps of few registers and timing differences but don't know if this will be interesting... Can I collect some other info to make is easier to debug? Can this me matter of some third (unknown for us yet) pair of mul and div registers? -- Rafał Miłecki