В Вт, 20/07/2021 в 18:00 +0000, Jakub Fišer пишет: > Hello Alsa people, > > hope this is the right place to post. > > My Quantum 800's microphone doesn't work and I found other reports > suggesting > this issue affects the whole Quantum product line. This device consists of two interfaces. The first interface contains a single playback endpoint and the second interface contains playback and capture endpoints. So JBL Quantum probably needs a registration quirk similar to Kingston HyperX devices. Please try the patch below: diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 8b8bee3c3dd6..f54331892d7a 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1897,6 +1897,7 @@ static const struct registration_quirk registration_quirks[] = { REG_QUIRK_ENTRY(0x0951, 0x16d8, 2), /* Kingston HyperX AMP */ REG_QUIRK_ENTRY(0x0951, 0x16ed, 2), /* Kingston HyperX Cloud Alpha S */ REG_QUIRK_ENTRY(0x0951, 0x16ea, 2), /* Kingston HyperX Cloud Flight S */ + REG_QUIRK_ENTRY(0x0ecb, 0x203e, 2), /* JBL Quantum 800 */ { 0 } /* terminator */ };