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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 78A61C00523 for ; Wed, 8 Jan 2020 06:23:19 +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 F3F5D2081E for ; Wed, 8 Jan 2020 06:23:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="SEh41jRZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F3F5D2081E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com 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 362E21832; Wed, 8 Jan 2020 07:22:27 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 362E21832 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1578464597; bh=ByfqdCllQDlHmlg5UkLuvbLGMY+3E1GfRLG6HruaGxs=; h=Date:From:To:References:In-Reply-To:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=SEh41jRZmvRpC4RtLbnKnXUUNloqBeIweAZ1g/unx34RkTQyAI62hbL6vYXg1ZTOh G50TMbUYV4ewnkJtjtT8p2GwoAmJUqUr3nhwK8Yl9yt9CnwKRzgYvfgsMcsXdecl/d AB2p1xiQuipPaA5YBS6bZgdgy6wLQe04sJAZFUPY= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id A7F8EF80159; Wed, 8 Jan 2020 07:22:26 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 7E882F8014A; Tue, 7 Jan 2020 18:27:38 +0100 (CET) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 89EFAF8010D for ; Tue, 7 Jan 2020 18:27:33 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 89EFAF8010D X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 Jan 2020 09:27:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,406,1571727600"; d="scan'208";a="233275478" Received: from ndcioban-mobl.jf.intel.com (HELO linux.intel.com) ([10.7.199.51]) by orsmga002.jf.intel.com with SMTP; 07 Jan 2020 09:27:27 -0800 Received: by linux.intel.com (sSMTP sendmail emulation); Tue, 07 Jan 2020 09:24:57 -0800 Date: Tue, 7 Jan 2020 09:24:57 -0800 From: Nathan Ciobanu To: Lucien_Kao@compal.com Message-ID: <20200107172457.GA18938@nc-hades.jf.intel.com> References: <5aff22f1e36e484fa52e17c855e8ddc8@TPEMBX03.compal.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <5aff22f1e36e484fa52e17c855e8ddc8@TPEMBX03.compal.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Mailman-Approved-At: Wed, 08 Jan 2020 07:22:26 +0100 Cc: AJ_Cheng@compal.com, alsa-devel@alsa-project.org, CindyXT_Wang@compal.com, tiwai@suse.de, intel-gfx@lists.freedesktop.org, Nelson_Ye@compal.com, Shane_Yap@compal.com, Evan_Tseng@compal.com Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Mon, Jan 06, 2020 at 08:08:04AM +0000, Lucien_Kao@compal.com wrote: > Hi Takashi > > We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please refer to attachment), the result is positive which symptom doesn't happen anymore once I played music or video sound output through Dell S2718D Type-C monitor. It seems had some fix in latest kernel. Takashi, can you point to the patch series you suspect may have fixed this issue? Thanks, Nathan > > Thanks. > > > -----Original Message----- > From: Takashi Iwai > Sent: Friday, January 3, 2020 5:16 PM > To: Cheng. AJ (TPE) > Cc: intel-gfx@lists.freedesktop.org; alsa-devel@alsa-project.org; nathan.d.ciobanu@linux.intel.com; Wang. CindyXT (TPE) ; Ye. Nelson (TPE) ; Yap. Shane (TPE) ; Kao. Lucien (TPE) ; Tseng. Evan (TPE) > Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor > > On Fri, 03 Jan 2020 02:57:03 +0100, > wrote: > > > > Hi Sirs, > > Here is chromebook SW team from Compal. > > As the mail title, we hit issue that the external monitor will flash once when play video after hot pluging. > > We can reproduce not only on chromebook but also ubuntu 16.04. > > There has higher failure rate with Dell Solomon dock and Dell S2718D monitor. > > > > We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix > > this issue.(as the attachment) May need your help to review and advice. Thanks. > > > > Here is the issue number in gitlab for more detail. > > https://gitlab.freedesktop.org/drm/intel/issues/318 > > Could you check whether it still happens with the latest upstream kernel, at least 5.4.y, if it wasn't tested yet? > > I don't want to put a long delay just because of random reason unless it's really mandatory. I'm wondering whether the recent write-sync change improves the situation, so let's check the recent code. > > > thanks, > > Takashi > > > > > > > > > AJ Cheng > > NID/NID1 > > e-mail: AJ_Cheng@compal.com > > Tel: +886-2-8797-8599 ext. 17561 > > Mobile : +886-932827829 > > COMPAL Electronics, Inc. > > > > [2 flash_once.diff ] > > > > _______________________________________________ > > Alsa-devel mailing list > > Alsa-devel@alsa-project.org > > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel