From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96279C4361B for ; Wed, 9 Dec 2020 12:14:42 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AF29F23B7B for ; Wed, 9 Dec 2020 12:14:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF29F23B7B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 42BF81696; Wed, 9 Dec 2020 13:13:50 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 42BF81696 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1607516080; bh=rbx+lVX0gBfh1OXdXyapagXmLl2P+Ks329WsO/swzR4=; h=Date:From:To:Subject:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=WAXxvKFCQ3wCGQz+G3/8T/Fz2ykZFUX/6CuJm4QYNO0BDLHThcdynUMOexl+mNr+Q YWGz5m3N66famk9SWIazMlRAfMr7Ulk/k7ZDjxKMVOHEW0J/5yt6Qx5ajyy+W/Xdse hnXUgJeFkNbuq/eNgJYUZ2Re/0yfLvCPRpqobTyk= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 523FFF801D8; Wed, 9 Dec 2020 13:13:49 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 67433F8020D; Wed, 9 Dec 2020 13:13:47 +0100 (CET) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 63816F800E1 for ; Wed, 9 Dec 2020 13:13:36 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 63816F800E1 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B2EDCACF4; Wed, 9 Dec 2020 12:13:35 +0000 (UTC) Date: Wed, 09 Dec 2020 13:13:35 +0100 Message-ID: From: Takashi Iwai To: meschi@posteo.de Subject: Re: Steinberg UR22 Crackling and Clicks In-Reply-To: References: <61da73624ff3855867b8e65936fc2e1c@posteo.de> <987d1956f52ba49dc3b587c33e08bfb2@posteo.de> <4188489e2967b44e57653193cab9d1cb@posteo.de> <5811c5724e831c38395d3e5b57439b4d@posteo.de> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Cc: alsa-devel@alsa-project.org 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" On Wed, 09 Dec 2020 13:10:17 +0100, meschi@posteo.de wrote: > > > Then try to pass implicit_fb=1 option to snd-usb-audio module. > > It's a new option that was added recently. > > > > > > Takashi > > Nice, that did the trick. there was a small glitch on first playback > but I can not reproduce it now. Playback seems glitch-free now. I will > test it with pulseaudio in the gui if I can. It's not quite easy to > test, because the system locks up after a while with the new kernel > and gnome 3. I will also test concurrent playback and recording, > too. Thank you very much, that was a huge help! Good to hear. If the implicit_fb option works, we can add a static quirk table entry easily. Just add IMPLICIT_FB_GENERIC_DEV() with the device ID to playback_implicit_fb_quirks[] table in sound/usb/implicit.c. Takashi