On Fri, 31 Mar 2017 21:04:37 +0200, Pascal Wichmann wrote:
Hi all,
I guess the digital-7.1 corresponds to HBR, and it's a special setup. Meanwhile 5.1 output he has tried is likely the LPCM, so both are in a completely differently manner.
Thank you, that sounds like a good explanation for my first issue.
For the other problem, that seems to be some kind of HDMI handshake related issue to me. I have done some more research and found similar problems like [0]. Their solution to enable a pulseaudio loopback seemed to improve the situation at first; at least during the last two hours, the problem did not occur as often as it did before (without explicitly provoking it), but it occurred though.
In addition, I have disabled the power save options of the snd_hda_intel module:
options snd_hda_intel power_save=0 power_save_controller=N
This however does not seem to have any impact on the problem at all.
I have also found a way to reliably reproduce the problem by muting and immediately unmuting the output in alsamixer having some audio running
- -- this way, the output gets silenced for a few seconds a moment after
the unmuting almost always.
Is the above solution using the pulseaudio loopback module not enough to prevent handshake issues? Do handshake issues sound suitable at all? Do you have any other ideas where the problem may lies?
It's a general problem with many digital receivers. When the stream stops, a digital receiver turn itself off until it re-receives a new stream. And this on/off takes a few seconds.
Thus, you must not stop the stream, but you'd need to keep sending the silent stream even if you stop a playback.
Takashi