(03-08-2021, 11:21 PM)popej Wrote: Hi!
You have to disable screen blanking to have audio on HDMI. Or you can set option in config.txt:
hdmi_blanking=0
Option "wake display on play" didn't work for me.
Hardware volume on HDMI is initially at 0, which can be a reason for no audio. Hardware volume doesn't use CEC commands, so it is probably no different than software volume. I set it to none.
Default HDMI audio is 16-bit. You can switch to vc4-kms-3d driver, but I haven't been able to configure it correctly. Maybe there is a guide for it? Likely will start a new thread for
Regarding your comment on vc4-kms-3d driver and default HDMI audio being 16-bit, you are correct that my 24 bit music is playing at an output rate of 16 bits, so I will dig into that next, likely in a new vc4-kms-3d post.
