I have a relately advanced technical problem here. I am really hoping I am not the first one who has bumped into it. I'd really appreciate if someone can offer advice.
I have a Lenovo T400 laptop, used to connect it to my Sony Bravia TV, via VGA + miniplug. Both picture and sound are good.
Now trying to use docking station DVI port, DVI-> HDMI adapter, HDMI-HDMI cable connect to TV HDMI IN 1 port for video. And miniplug->red+white RCA cable to sound ports together with HDMI IN 1 port. Video is ok, but no sound.
I called Sony TV support. I was convinced this is not a TV issue. Since I plug in the HDMI cable, the video is ok on HDMI IN 1. And then I unplug HDMI cable, plug in the miniplug->RCA sound cable, audio is ok on HDMI in 1. It's just video and audio don't work together at the same time, which is not right.
Sony support engineer said that this could be because my T400 trying to output sound via DVI port, althought it can't. But since TV has HDMI connection, it detects digital sound signal, and then ignored the analog sound from RCA sound cable. So the solution should be disable the sound output to DVI port, only through the miniplug output. She doesn't know how, neither do I.
I consider myself sort of semi tech savvy. I explored many different configurations in my WinXP OS. But none fixed the problem. Is there a magic/hidden option to disable the digital sound output?
Thanks in advance.