Audio problem on Envy 15 q series
Ok, it is very weird.
I tried "uia_exclude=SSP1,SSP2,SSP3,SSP4,SSP5,SSP6" to exclude all USB3.0 and it really exclude all USB3.0 and got 4 ioreg with 4 different ports respectively.
Than, i follow your instruction and try to boot with...