From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263298AbTDYRdT (ORCPT ); Fri, 25 Apr 2003 13:33:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263459AbTDYRdT (ORCPT ); Fri, 25 Apr 2003 13:33:19 -0400 Received: from almesberger.net ([63.105.73.239]:40717 "EHLO host.almesberger.net") by vger.kernel.org with ESMTP id S263298AbTDYRdS (ORCPT ); Fri, 25 Apr 2003 13:33:18 -0400 Date: Fri, 25 Apr 2003 14:44:49 -0300 From: Werner Almesberger To: Alan Cox Cc: Pat Suwalski , Jamie Lokier , "Martin J. Bligh" , Matthias Schniedermeyer , Marc Giger , Linux Kernel Mailing List Subject: Re: [Bug 623] New: Volume not remembered. Message-ID: <20030425144449.X3557@almesberger.net> References: <20030423231149.I3557@almesberger.net> <25450000.1051152052@[10.10.2.4]> <20030424003742.J3557@almesberger.net> <20030424071439.GB28253@mail.jlokier.co.uk> <20030424103858.M3557@almesberger.net> <20030424213632.GK30082@mail.jlokier.co.uk> <20030424205515.T3557@almesberger.net> <3EA87BE1.1070107@suwalski.net> <20030425074116.V3557@almesberger.net> <1051265094.5573.8.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1051265094.5573.8.camel@dhcp22.swansea.linux.org.uk>; from alan@lxorguk.ukuu.org.uk on Fri, Apr 25, 2003 at 11:04:55AM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan Cox wrote: > The OSS audio drivers ac97 code now starts up with record muted. Okay, so I guess this will then cover all cases ? (Changebar marks OSS addition.) ALSA (Advanced Linux Sound Architecture) is now the preferred architecture for sound support, instead of the older OSS (Open Sound System). Note that, in ALSA, all volume settings default | to zero, and all channels default to being "muted". Also some | OSS drivers in 2.5 initialize certain mixer settings to zero. User space therefore needs to explicitly increase the volume, and "unmute" the respective audio channels before any sound can be heard. Mixers not explicitly supporting the "mute" functionality will usually "unmute" sources when setting the volume to a value above zero. More information about ALSA, including configuration and OSS compatibility, can be found in Documentation/sound/alsa/ (I guess a simpler rule would be "if there's no sound, check the mixer - and you don't want to know why you have to do this" :-) - Werner -- _________________________________________________________________________ / Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net / /_http://www.almesberger.net/____________________________________________/