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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 C8223C433E6 for ; Wed, 3 Mar 2021 19:23:41 +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 E389B64EC3 for ; Wed, 3 Mar 2021 19:23:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E389B64EC3 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 6526C1A16; Wed, 3 Mar 2021 20:22:47 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 6526C1A16 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1614799417; bh=5UZ+fxoHpS0PZ24xQf2N1uiJl4ncdabMGBNpCsNsyaY=; h=Date:From:To:Subject:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Kdsokrt9qX4hqQlC2s1cPCRnwWk/On4kMm/eDC4NRot93yYbOTn9wXFJzLZT8Poub MyzB39Ct4G/c1NiC8Kg/SIXf++wq5dg8g0rn2ccz0//N0kH1Ln4jFOl44Jr+p+55c/ Wm3qm6nQnteWBzMrPwcWpkaI3K0WBT8dutz+RENM= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id D8CDCF80257; Wed, 3 Mar 2021 20:22:46 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id BA95BF8025E; Wed, 3 Mar 2021 20:22:45 +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 D8659F80227 for ; Wed, 3 Mar 2021 20:22:38 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz D8659F80227 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 684A3ACBC; Wed, 3 Mar 2021 19:22:38 +0000 (UTC) Date: Wed, 03 Mar 2021 20:22:38 +0100 Message-ID: From: Takashi Iwai To: John Ernberg Subject: Re: [PATCH] ALSA: usb: Add Plantronics C320-M USB ctrl msg delay quirk In-Reply-To: <20210303181405.39835-1-john.ernberg@actia.se> References: <20210303181405.39835-1-john.ernberg@actia.se> 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: "linux-kernel@vger.kernel.org" , "alsa-devel@alsa-project.org" , "kempe@lysator.liu.se" , "tiwai@suse.com" 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, 03 Mar 2021 19:14:39 +0100, John Ernberg wrote: > > The microphone in the Plantronics C320-M headset will randomly > fail to initialize properly, at least when using Microsoft Teams. > Introducing a 20ms delay on the control messages appears to > resolve the issue. > > Link: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/1065 > Tested-by: Andreas Kempe > Signed-off-by: John Ernberg > --- > > Note: Microsoft Teams is the only application tests have been performed with > and no other kinds of investigations have been performed, like USB packet logging. > Originally reported as a possible PulseAudio issue, where it was suggested to > try a delay quirk in the kernel. > If other tests should be performed, please let me know which tests and I will try to do them. > > All testing was done on 5.10, patch was then applied on sound.git master for submission > > I did not register to the mailing lists, please keep me CC on any comments. Thanks! Thanks, applied now. It's a good timing, as I've recently got a bug report for the similar device (C320) showing mysterious behavior on Teams :) Takashi