>> Somehow we need to find a way to set this AES0 byte when opening the >> iec958 or hdmi device in the passthrough code, and reset it back to >> 0x04 for PCM playback (should be fairly easy to do by looking at the >> code of iecset in alsa-utils). Beats me why this was not needed for >> plain ac3, but setting the audio bit is actually the correct thing to >> do. > > If my reading is correct, this is something we should do for all formats > anyway? Yes. The C bits are usually ignored by the receiver since a lot of sources don't configure them well. But it turns out that in this case setting the non-audio bit is a mandatory setting. > Is the ALSA device correctly being configured to 192 kHz? I will have to recheck for these two cases. I guess it is since I can see the D+ logo, but let me confirm for these two cases.
