From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas schorpp Subject: [CONF] All C-Media Codecs based 5.1 Channel USB- Headsets Date: Sun, 04 Nov 2007 08:36:56 +0100 Message-ID: <472D7698.2080700@googlemail.com> Reply-To: thomas.schorpp@googlemail.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.184]) by alsa0.perex.cz (Postfix) with ESMTP id 1DD072449C for ; Sun, 4 Nov 2007 08:37:00 +0100 (CET) Received: by fk-out-0910.google.com with SMTP id f40so1256185fka for ; Sun, 04 Nov 2007 00:36:59 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Report to devlist as requested from USB-Audio.conf header: 1. all this headsets with windriver inf files + manual showing c-media driver must have the cm106x series 7.1 channel usb-codec in. there's no other from c-media for the design of 5.1 channel usb headsets available at this time, see: http://www.cmedia.com.tw/?q=en/usb_audio 2. the headset interface shows up with 8 channels in lsusb -v , 1 8-ch pcm in /proc, and must be driven with surround7.1 pcm plug instead of surround5.1 or it will not work. speaker-test program works with -c6 -Dsurround7.1, test with -c8 works too, but shows that no SideL/R -speakers connected/routed/downmixed ( Speedlink Medusa 5.1 Mobile USB Headset, cm106L) 3. it works instantly without extra config using programs that allow specifying (-D)surround7.1 like VDR and MPlayer, VLC did not so far (maybe can do with special commandline) and therere maybe other unconfigurable (or buggy?) players that need a missing extra cm106 CARD configfile showing those apps a 5.1 channel device instead a 7.1. i've done none so far, the config file language (especially routing and mappings) is not well documented, sorry. y tom