From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?utf-8?B?xYF1a2FzeiBXb2puacWCb3dpY3o=?= Subject: Front speakers doesn't work in multichannel output, regression in ALC888 Date: Sat, 02 May 2015 07:42:27 +0200 Message-ID: <2927807.UsnFnTlWVL@luklap.workgroup> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-lb0-f170.google.com (mail-lb0-f170.google.com [209.85.217.170]) by alsa0.perex.cz (Postfix) with ESMTP id D2416261721 for ; Sat, 2 May 2015 07:42:30 +0200 (CEST) Received: by lbbqq2 with SMTP id qq2so75784308lbb.3 for ; Fri, 01 May 2015 22:42:30 -0700 (PDT) Received: from luklap.workgroup (c162-131.icpnet.pl. [85.221.162.131]) by mx.google.com with ESMTPSA id ra7sm1788701lbb.27.2015.05.01.22.42.29 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 01 May 2015 22:42:29 -0700 (PDT) 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 Hi all, My problem is that when I set channel output to "Analog output surround 5.1" (or 2.1 or 4.1), I hear no sound in front speakers, but in case of 5.1 or 4.1 I can hear sound in rear speakers. I use kernel 3.19.5 and it didn't happen in earlier kernels that is 3.18 and in 3.17 for sure. My configuration is: OS: Fedora 21 64 bit SoundCard: ALC888 Model name: acer-aspire-4930g Laptop: Acer Aspire 5930g Speakers: external 5.1 with 3 jacks Sound channel configuration module is standard configuration module from KDE. Additional info: 1) When channel output is 5.1 and I unplug green jack and leave two others jacks connected then I can hear sound in laptop internal speakers. 2) Earlier (kernel 3.18 and 3.17) I didn't have possibility to choose 2.1 configuration and additionally to 4.1 configuration I could also choose 4.0 configuration. Thanks for looking into problem. Cheers LW