From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: No speaker output with kernel 3.15 and later Date: Mon, 30 Jun 2014 11:24:09 +0200 Message-ID: References: <1404050996.31259.2.camel@snewbury.org.uk> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id A53A62607B6 for ; Mon, 30 Jun 2014 11:24:10 +0200 (CEST) In-Reply-To: <1404050996.31259.2.camel@snewbury.org.uk> 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: Steven Newbury Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org At Sun, 29 Jun 2014 15:09:56 +0100, Steven Newbury wrote: > > I sent Takashi an email mentioning this regression a month ago, and > it's taken me this long to send this email... :-$ > > Since updating to kernel versions >=3.15 I've had no audio from my > laptop speakers. Earlier versions worked fine. > > It's a CLEVO W270EUQ laptop. The output mixer device is showing up, > but no sound comes out at any volume level. > > As requested I've attached compressed alsa-info.sh output for both the > working and non-working cases. > > I'm perfectly willing to test patches etc. Hm, I see no significant difference between 3.14 and 3.15 alsa-info.sh outputs, and there's been very little change for VIA codecs between these versions. So, in short, I have no idea what went wrong. Could you double-check whether it's really a kernel issue? That is, switch between 3.14 and 3.15 and confirm the problem happens only with 3.15. Also, for testing the sound, try like % aplay -Dplughw -vv foo.wav Takashi