As a last ditch effort before returning the device, I tried the clock patch on a Raspberry Pi 4 running an older kernel, and... it works. The kernel version is "Linux raspberrypi 4.19.89-v7l+" and is from late February 2020. Maybe a change between then and now broke something? I know there have been a *lot* of changes since then, though... Mike On Wed, Jan 20, 2021 at 1:47 PM Mike Oliphant <oliphant@xxxxxxxxxxxx> wrote: > Yeah, I tried every possible permutation of mute/volumes on the mixer > controls. > > Thanks for submitting the patches. Maybe someone else will have better > luck down the road. > > Mike > > On Wed, Jan 20, 2021 at 1:38 PM Takashi Iwai <tiwai@xxxxxxx> wrote: > >> On Wed, 20 Jan 2021 22:17:35 +0100, >> Mike Oliphant wrote: >> > >> > I spent a fair bit of time debugging the code setting/getting mixer >> control >> > values, and I can't see anything that seems to be operating incorrectly. >> >> So, even if you unmute and raise both mixers, it didn't help, right? >> I took a look at the lsusb output, but I couldn't find anything else >> suspicious. >> >> > Unless you have any other suggestions, I'm going to admit defeat and >> return >> > the audio interface. >> > >> > It is probably worth committing the clock selector patch - it at least >> made >> > capture work, and it may help with other audio interfaces. >> >> OK, I'll submit two fix patches. >> >> >> thanks, >> >> Takashi >> >
