A2DP can not adjust volume of sound

96boards

#1

I have followed steps that @doitright posted in other thread to configure my hikey 960 acting as a A2DP sink role using AUTOMOTIVE overlay.
A2DP can work correctly, but sound is very small and I can not adjust it by “setting”. Anyone has the same problem?
I play music by my iPhone, but adjusting the volume by my phone is not workable.


#2

Try with an Android phone or tablet, or a keyboard with volume buttons. Apple almost never respects standards, so is not a good choice for testing.


#3

OK, volume adjustment is fine by Android phone or keyboard. But for iPhone, how to make it to support sound adjustment?


#4

That will generally be the problem you get when you try to work with things that are non-compliant – and in this case, INTENTIONALLY non-compliant because that company’s sole objective is to sell more of their own crap or products that pay their exploitation fees. Save yourself the trouble, 10% of the market isn’t worth worrying about until everything else is good.