Hi Geraldo - I don't have that patch applied, but it shouldn't make any behavioral difference - it just seems to be simplifying the code. The issue is that the BOSS GT-1 *does* need implicit feedback on playback to avoid clock timing issues, and the current behavior is disabling that feedback. Mike On Wed, Apr 7, 2021 at 1:04 PM Geraldo Nascimento <geraldogabriel@xxxxxxxxx> wrote: > Hey Mike, did you catch the latest patch by Takashi Iwai for capture > quirky devices? > > You can find it here: > https://patchwork.kernel.org/project/alsa-devel/patch/20210406113837.32041-1-tiwai@xxxxxxx/ > > Em Qua, 7 de abr de 2021 16:55, Mike Oliphant <oliphant@xxxxxxxxxxxx> > escreveu: > >> I had thought that the recent implicit feedback changes were fully working >> on the BOSS GT-1, but it turns out that I just hadn't tested well enough. >> >> Audio playback and capture works, but with periodic dropouts. I get the >> exact same behavior as I did with the quirk to completely disable implicit >> feedback. Without the implicit feedback, you get dropouts from clock drift >> - how bad probably varies from card to card. On mine it is every second or >> so. >> >> If I switch playback feedback for the GT-1 to generic by doing >> "IMPLICIT_FB_GENERIC_DEV(0x0582, 0x01d6)", I get the previous old >> behavior, >> which is that playback completely fails to start. >> >> With generic playback feedback, and using my previous patch to endpoint.c >> to avoid playback waiting on capture mentioned here: >> >> >> https://mailman.alsa-project.org/pipermail/alsa-devel/2020-January/161951.html >> >> playback and capture work perfectly for me. >> >
