From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gabriele Mazzotta Subject: Re: [PATCH] ALSA: hda - Disable AA-loopback on ALC668 Date: Tue, 20 May 2014 17:59:30 +0200 Message-ID: <1912473.njNymtsN1l@xps13> References: <1784940.JdFq8Pv96a@xps13> <5132959.uTC67tbQhF@xps13> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ee0-f68.google.com (mail-ee0-f68.google.com [74.125.83.68]) by alsa0.perex.cz (Postfix) with ESMTP id 9E76C261AF6 for ; Tue, 20 May 2014 17:59:32 +0200 (CEST) Received: by mail-ee0-f68.google.com with SMTP id d49so651558eek.7 for ; Tue, 20 May 2014 08:59:32 -0700 (PDT) Received: from xps13.localnet ([193.190.253.149]) by mx.google.com with ESMTPSA id m44sm4824534eep.6.2014.05.20.08.59.31 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 20 May 2014 08:59:31 -0700 (PDT) In-Reply-To: <5132959.uTC67tbQhF@xps13> 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: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Thursday 15 May 2014 21:56:23, Gabriele Mazzotta wrote: > On Wednesday 14 May 2014 16:31:13, Gabriele Mazzotta wrote: > I'm sorry, I was wrong. This patch does not help. I'm still trying to > understand what temporarily fixed the problem, I was quite sure this patch did > it, but all of the sudden the noise came back. I'm still trying to find the > real cause, but I doubt I'll succeed. > > Regards, > Gabriele I have to correct myself again, the first patch I submitted is working, I'm sorry. However, it seems that disabling the AA-loopback path is not necessary, muting the input 0x0b in node 0x0c (as it was suggested here: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1252733/comments/26) is enough to get rid of the white noise. What is the proper way to fix this problem? Regards, Gabriele