From owner-freebsd-current@FreeBSD.ORG Fri Mar 18 19:23:20 2005 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 52CF516A4CE for ; Fri, 18 Mar 2005 19:23:20 +0000 (GMT) Received: from enterprise4.noxa.de (enterprise.noxa.de [212.60.197.71]) by mx1.FreeBSD.org (Postfix) with ESMTP id 07CDE43D41 for ; Fri, 18 Mar 2005 19:23:19 +0000 (GMT) (envelope-from arundel@h3c.de) Received: (qmail 24076 invoked from network); 18 Mar 2005 20:23:16 +0100 Received: from pd9e51307.dip.t-dialin.net (HELO localhost.skatecity) (217.229.19.7) by enterprise.noxa.de with AES256-SHA encrypted SMTP; 18 Mar 2005 20:23:16 +0100 Received: from localhost.skatecity (nobody@localhost.skatecity [127.0.0.1]) by localhost.skatecity (8.13.3/8.13.3) with ESMTP id j2IJMeC9063541 for ; Fri, 18 Mar 2005 20:22:40 +0100 (CET) (envelope-from arundel@localhost.skatecity) Received: (from arundel@localhost) by localhost.skatecity (8.13.3/8.13.3/Submit) id j2IJMebg063540 for freebsd-current@freebsd.org; Fri, 18 Mar 2005 20:22:40 +0100 (CET) (envelope-from arundel) From: alexander Date: Fri, 18 Mar 2005 20:22:40 +0100 To: freebsd-current@freebsd.org Message-ID: <20050318192239.GA62938@skatecity> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailman-Approved-At: Sat, 19 Mar 2005 13:53:30 +0000 Subject: Re: FreeBSD sound distortion problems with SB Live! fixed with PREEMPTION X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Mar 2005 19:23:20 -0000 Same problem here. I spoke to Travis a few days ago and he told me about this issue. I didn't even realize that this was a bug in the driver or somewhere in the kernel I/O routines. I thought it was a problem with xmms or some problems with the cables of my speakers or something like that. I'm expiriencing constant crackling dutring the playback of mp3s and probably a lot of other audio file formats. Also xmms and mplayer have problems upon track changes. The very first microseconds of each audio file are being skiped. I don't think this is a problem with any of the audio players, because they worked fine with previous versions of FBSD. Also the driver for my audio card (SoundBlaster Audigy 2) hasn't change much since it was first comitted into the 5-CURRENT branch. It's the patch for Audigy 1/2 cards by Orlando Bassotto. Plus I used both the drivers that are available (emu10k1 and emu10kx). It doesn't make any difference! So I guess it is a kernel issue. I'm running the following version of FBSD right now: 5.4-PRERELEASE FreeBSD 5.4-PRERELEASE #0: Sun Feb 27 16:54:49 CET 2005 So the issue is not limited to 6-CURRENT. I don't think this problem existed in 4-STABLE. Also I'm pretty sure that this issue didn't exist in 5.3-RELEASE. I believe some code that was comitted to 6-CURRENT as well as to 5-STABLE caused these problems.