Re: Call for testers: HDMI pass-through
1) I believe these files are so-called "HBR" audio (High BitRate audio, name per HDMI spec)? If so, looking at our Windows driver, only a limited subset of our GPUs support this feature, based on audio codec ID:
0x000B (perhaps, based on silicon rev)
(some of those IDs don't actually exist in production)
2) I don't recall what state the kernel driver is in for HBR support on NVIDIA codecs/controllers.
3) There are some AES control bits that I think indicate the format of the audio being sent to the receiver; I can't remember if these are bits that asound.conf needs to set or the application needs to specify when opening the ALSA device, or if they're something that's simply encoded into the SPDIF stream. Perhaps some receivers are better than others at interpreting audio if those bits aren't set correctly?