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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9B101C433F5 for ; Fri, 14 Jan 2022 03:42:24 +0000 (UTC) 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 C48921FBB; Fri, 14 Jan 2022 04:41:31 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C48921FBB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1642131741; bh=vWr9BA0ImIREzKlRnss3glkwXVJXZDkWpPs4w/sklEw=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=dvDLnbcHu7xIMLIBRHkJS/recZ94iaPHWZbQrx1L+rLguGO3FQ8NUkynRROTl+iCf oK9Hz3ZoArxCmaqNx90TiUnKwmDT4foC39AqMIUx5VnAE7R4kdddu+qdEKZMDmloXQ pJ+QmcGrvYC0Kr8wVWBYsN6N4NEUpr2Qfa/LbibU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 5FC91F80054; Fri, 14 Jan 2022 04:41:31 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id BA7AFF8030F; Fri, 14 Jan 2022 04:41:29 +0100 (CET) Received: from mail-oi1-x229.google.com (mail-oi1-x229.google.com [IPv6:2607:f8b0:4864:20::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 804BDF80054 for ; Fri, 14 Jan 2022 04:41:26 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 804BDF80054 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GqnD7fVw" Received: by mail-oi1-x229.google.com with SMTP id i9so10665633oih.4 for ; Thu, 13 Jan 2022 19:41:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=3vuHmubA7NBDeSjuXqC7P1p+i2CcuSRvh/FPtVKp0pY=; b=GqnD7fVw9W41GxxUp3bF++kIKya9l5a7Fpbf57Pc8XwClyzYQCTttqF0280Xi4OzhM 9Ecn075NqTNl9hgrfW9mAPubg0nBTgZwkjbbmr4o76XnfTqsMVw/GxO86no3GLrMZ5MM hDUfBERoy7Fa5q9z4nUWUnSovOIJHlue8tdf1Ex5HQYHZL7jh2ANB/PGwbD/L3dbU03Y 6LkDrfhBoqANlSdU8ezFmnP6QnGWqFGq/ddRYz9FIqxkvaxzS+RN5ODEPmg/jw2tqLnp WgHJh+UjKTo/aheI6hLeyrNQbADAV3+q+DeG+i6i+Pbxg1H39s7X91vc0CzV+jFoIG0C jKlw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=3vuHmubA7NBDeSjuXqC7P1p+i2CcuSRvh/FPtVKp0pY=; b=6h/OOptK4ZySqfbg2sjUxzQ0h1iH7Yqbe6MxQWY1bjr86oZUqGaom0TUd+jbL9Mpcr uf+PXJ/1pK03/7KfWO1TkKtwASGXovWGUsvbpte2Ey/u3MVlB2zPX35HWdjEmGwCvZ13 PHc0tZXyvBw68PlTo/phiFwGfxp7G2NNhilt6gORFUy2gA9x3a6sj95ZbNgZIqFY9zEm Rma7qfEElfDZ2xAhykC8aOQCQdgJ+Higk1tD8xNqt3kUPVuTDr2KhqcRDvo3Es1qh/rv zlE9mPrDuM7ppOQRsboMY70xQQhUNAl4PgpVPVpVdsa7MYPS4e2RQKkZRbOYZBp5cKBA KtVQ== X-Gm-Message-State: AOAM533mlCv60BuQrMsYCYB8Y1xAL5IkP1P25xD7szgeAoh8nZ5Knke2 AmpRoYZojaCZv2toQy5mAOk= X-Google-Smtp-Source: ABdhPJxTlLkJdl9K7Pkuosn/X5g4m0DOXhzwkeSHpitLYWIZBNMgTs/ahKTbvmRl7AS7RMTVvSgnxA== X-Received: by 2002:a54:481a:: with SMTP id j26mr5749807oij.143.1642131684146; Thu, 13 Jan 2022 19:41:24 -0800 (PST) Received: from geday ([2804:7f2:8002:f237:d475:1acd:9c67:d4cd]) by smtp.gmail.com with ESMTPSA id b24sm1196233oti.68.2022.01.13.19.41.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jan 2022 19:41:23 -0800 (PST) Date: Fri, 14 Jan 2022 00:41:39 -0300 From: Geraldo Nascimento To: Nandakumar Edamana Subject: Re: Behringer UMC202HD issues and a partial solution Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Fri, Jan 14, 2022 at 08:04:08AM +0530, Nandakumar Edamana wrote: > Thank you very much for the kind reply. > > > You made the dmesg warning go away, but that didn't necessarily solve > > the underlying issue. May I ask that you post the "lsusb -v -d > > 1397:0507" ? > > Here it is, connected to a USB 2.0 port (xHCI still enabled). > Thanks, Nandakumar! Have you tried unloading the snd-usb-audio module and the reloading it with implicit_fb=1 as in "modprobe -r snd-usb-audio" and "modprobe snd-usb-audio implicit_fb=1" ? If not, try it. If it works and your playback issues are gone then your device may just need a quirk. If it doesn't work we still have dyndbg to go through. Last but not least, please use a vanilla kernel for these tests. Thank you, Geraldo Nascimento