I have been trying to figure out how to disable the built-in speakers but have not been succesful yet. The support I get from ASUS sucks so I believe I have to figure it out by myself and some help is appreciated.
I think that the optical SPDIF port is working (haven't tested it though) but I can mute everything except the SPDIF and there is still light coming from the port. That leads me to believe the SPDIF port is transmitting sound signal even though the built-in speakers are muted. If this is true it would be a solution to buy digital headphones with a built-in D/A converter but I don't know whether they exist? Does anyone have any idea with regards to that?
Any other ideas, anyone? How on earth can I disable the built-in speakers through software?