[pedromvu]

Sorry, misunderstood what you meant. But that's not the issue, at least not on my end, especially since it's the same on every Android device I've owned, SATV, Ouya, FireTV, a MX2 box. And it's specific to just Kodi on Android.

Well... it seems that the static noise that I was getting after playing a video with 7.1 LPCM is also unrelated to the volume mode. It is actually related to "Keep audio device alive" setting. If I have it on "Always" or a specific time, I get static on all DTS and Dolby tracks that I play after the LPCM track. If I leave that setting to "Off", I get no static. So, this static noise problem could be due to different reasons and could be AVR specific. If it matters, I do get this static noise problem on both Onkyo TX-NR929 and TX-NR808.

I posted about a similar issue i had, the problem appeared to be the audio format of one of my videos, if i played it, everything seemed fine, but after i stopped it the audio didn't switch the format back and it kept the same setting for any other video causing static to come up, until i played a video on the stock youtube app (probably other apps changed it too), i don't remember if restarting Kodi helped.

But that was just with one video, it has never happened to me again.