From mboxrd@z Thu Jan 1 00:00:00 1970 From: Owen Williams Subject: Regression in Traktor Audio10 driver (snd-usb-audio) mixer flags Date: Thu, 31 Dec 2015 13:26:58 -0500 Message-ID: <1451586418.9097.8.camel@mixxx.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qk0-f179.google.com (mail-qk0-f179.google.com [209.85.220.179]) by alsa0.perex.cz (Postfix) with ESMTP id 6E544265D01 for ; Thu, 31 Dec 2015 19:27:01 +0100 (CET) Received: by mail-qk0-f179.google.com with SMTP id p186so24006597qke.0 for ; Thu, 31 Dec 2015 10:27:01 -0800 (PST) Received: from [192.168.1.110] (c-66-31-35-94.hsd1.ma.comcast.net. [66.31.35.94]) by smtp.gmail.com with ESMTPSA id n91sm24579106qkh.11.2015.12.31.10.26.58 for (version=TLSv1/SSLv3 cipher=OTHER); Thu, 31 Dec 2015 10:26:58 -0800 (PST) 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 Sometime between kernels 3.13 (ubuntu 14.04) and 3.19 (15.04) there was a regression that caused the mixer elements of the Traktor Audio10 driver to stop responding to changes to True. I have an older machine still running 14.04, and if I open alsamixer I can see and interact with the 8 basic boolean switches: numid=3,iface=MIXER,name='Direct Thru Channel A' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=4,iface=MIXER,name='Direct Thru Channel B' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=5,iface=MIXER,name='Direct Thru Channel C' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=6,iface=MIXER,name='Direct Thru Channel D' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=7,iface=MIXER,name='Phono Input Channel A' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=8,iface=MIXER,name='Phono Input Channel B' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=9,iface=MIXER,name='Phono Input Channel C' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=10,iface=MIXER,name='Phono Input Channel D' ; type=BOOLEAN,access=rw------,values=1 : values=off or I can use amixer: amixer -c T10 cset numid=8 on however on my newer machine, with ubuntu 15.04 and 15.10, I am unable to change the values to true. I am a member of the audio group and I have also tried with sudo, but when I try to set the value on nothing happens: $ amixer -c T10 cset numid=8 on numid=8,iface=MIXER,name='Phono Input Channel B' ; type=BOOLEAN,access=rw------,values=1 : values=off The fun part is, if I connect the card to my mac I can set startup conditions for these flags. I can set them to true, and when I connect to my linux machines the flags start up as true. And then, even on the newer kernel, I can turn them off! But I can't turn them back on again. This sound card is the one I'd like to recommend officially for the Mixxx DJ project so I'd really like to get to the bottom of this issue. thanks, Owen Williams A Lead Developer, Mixxx.org