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To: Lucas Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Cc: alsa-devel@alsa-project.org, Mike Oliphant X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Em Qui, 8 de abr de 2021 02:36, Lucas escreveu: > Well, I just got back from testing Mike's suggestion of setting the Roland > Boutique D-05 as a playback quirk, disabling its capture quirk, and setting > that endpoint test section to always be skipped. Sure, enough, the D-05's > playback is now perfectly crystal clear without the crackles associated > with an LP record. > I know that feeling and it is wonderful. > This is just a guess until I recompile again, but my capture from the D-05 > reports a read error, seemingly just as the vanilla mainline kernel does, > and I think it's because I disabled its capture quirk line. So, it seems > to me that the D-05 needs both quirk table entries, whether or not the GT-1 > does. > Looking back to Mike's 2019 post https://mailman.alsa-project.org/pipermail/alsa-devel/2020-January/161733.html we see the output of lsusb -v for the BOSS GT-1 and clearly we see that 0x8e is the implicit feedback sync EP, at least if we are to trust lsusb -v. Therefore Mike is on the right track that the GT-1 implicit feedback sync is for playback only. >