From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gabriele Mazzotta Subject: Re: Pop noise on startup when headphones are plugged in (Dell XPS13 9333) Date: Mon, 20 Apr 2015 21:49:49 +0200 Message-ID: <3004927.Zk5y6zPyn3@xps13> References: <23057263.IjMh4t6SYF@xps13> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wi0-f175.google.com (mail-wi0-f175.google.com [209.85.212.175]) by alsa0.perex.cz (Postfix) with ESMTP id CCF7C2654FC for ; Mon, 20 Apr 2015 21:49:51 +0200 (CEST) Received: by widdi4 with SMTP id di4so104709859wid.0 for ; Mon, 20 Apr 2015 12:49:51 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Takashi Iwai Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Monday 20 April 2015 07:58:15 Takashi Iwai wrote: > At Sun, 19 Apr 2015 19:26:58 +0200, > Gabriele Mazzotta wrote: > > > > Hi, > > > > I've recently found that commit a551d91473 ("ALSA: hda - Use regmap for > > command verb caches, too") is somehow causing a pop noise on startup > > when headphones are plugged in, but I couldn't figure out the exact > > cause. Was this observed on other systems (mine is a Dell XPS13 9333, > > Realtek ALC3661)? Does anyone have any idea of what the cause might be? > > Are you sure that the commit is the culprit? There are lots of other > changes like the widget-based power saving. Quite sure. I did a bisection to get it. 5e56bcea5017 ("ALSA: hda - Allow driver to add vendor-specific verbs for regmap") is OK. Also, if I revert a551d91473 in the current linux-next tree, the startup noise goes away. > In anyway, please give alsa-info.sh output. http://www.alsa-project.org/db/?f=7d283ebf64ca750482ec5ed6174a1b860fa70631