Phantom75

@maxmp if it's not related to volume control, what is this issue about? Why doesn't other players like the ones I mentioned have the same issue? Have you checked them?

Tried to disable DVC per device. Not working. Looks like there's nothing I can set on Poweramp that could make it work. At least I can't find any settings that would help. So far I have tested the same scenario on three different players: YouTube Music, Fermata Auto and Rocket Player. It's all good with them. Pressing volume down or up keys on my S21 when I'm listening to music on these players on Android Auto doesn't change the volume of the head unit. I can even mute media volume on my mobile and still listen to music on Android Auto on my car head unit normally. I'd really like to know why Poweramp doesn't work like these players.

@maxmp Volume Levels option is disabled because I'm on Android 12. I have tried to disable DVC, with no success. But I can see in OpenSL ES Output that I can disable DVC by output device. Worth giving a try. I just don't know which device refers to Android Auto. Other ouput devices? I'm still curious about how other players don't have that issue as well.

@maxmp here's what's happening. When I connect to the head unit and start Poweramp, I'm not connected via OpenSL, not BT. It's just like I'm listening directly from my mobile. I'm attaching two screenshots from audio info dialog. One from when I'm connected to the head unit and using Poweramp on Android Auto. The other is when connected to a Bluetooth mini speaker. I can notice a difference there.

@maxmp I don't know, I will try to find out. I just know that I'm plugged onto the head unit through a usb cable and running Android Auto on the head unit. I will try to check the current audio output type and also disable Direct Volume Control.

@andrewilley Agreed. But why do other players like Youtube Music or Fermata Auto work? When I'm running them on Android Auto, if I press volume up or down on my mobile, nothing happens. The head unit controls the volume. There's one more point that maybe it's worth to mention: I have recently changed my car, bought a new one. On my previous car I don't recall having that issue with Android Auto and Poweramp. I have this issue now on the new one.

Hi folks! Something weird is happening when I use Poweramp on Android Auto. I cannot control music volume on my car head unit, I can only do this on my mobile. So this is what happens: if I plug the cable and start Android Auto with media volume mute on my mobile, I can't listen anything on Poweramp. Even if I press volume up on my head unit, nothing happens, volume is not up. I have to volume up my mobile to listen songs on Poweramp when connected to Android Auto. Ok, when volume is up, I can control volume from my head unit. But it's like "volume over volume" control, just as some TV with a cable decoder: both have volume controls, but if I mute the decoder, I will not hear anything on the TV even if I volume it up. And vice versa. By the way, I have checked the same scenario with Youtube Music. This doesn't happen. EDIT: Samsung S21 Ultra, Android 12, Poweramp build 925