From owner-freebsd-current@FreeBSD.ORG Thu Mar 27 15:35:00 2003 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 7976537B401; Thu, 27 Mar 2003 15:35:00 -0800 (PST) Received: from postal1.es.net (postal1.es.net [198.128.3.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8266943F85; Thu, 27 Mar 2003 15:34:59 -0800 (PST) (envelope-from oberman@es.net) Received: from ptavv.es.net ([198.128.4.29]) by postal1.es.net (Postal Node 1) with ESMTP id MUA74016; Thu, 27 Mar 2003 15:34:56 -0800 Received: from ptavv (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id EB9555D07; Thu, 27 Mar 2003 15:34:56 -0800 (PST) To: Scott Long In-Reply-To: Message from Scott Long of "Wed, 26 Mar 2003 22:43:17 MST." <3E828F75.1000400@btc.adaptec.com> Date: Thu, 27 Mar 2003 15:34:56 -0800 From: "Kevin Oberman" Message-Id: <20030327233456.EB9555D07@ptavv.es.net> X-Spam-Status: No, hits=-5.4 required=5.0 tests=AWL,IN_REP_TO,QUOTED_EMAIL_TEXT autolearn=ham version=2.50 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.50 (1.173-2003-02-20-exp) cc: current@freebsd.org cc: Orion Hodson Subject: Re: AC97 sound problems with current 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: Thu, 27 Mar 2003 23:35:03 -0000 > Date: Wed, 26 Mar 2003 22:43:17 -0700 > From: Scott Long > > Orion Hodson wrote: > > Kevin Oberman writes: > > | > > | After upgrading my laptop from STABLE to CURRENT on 3/14 I have been > > | having problems with GnomeMeeting. Often the sound is badly broken with > > | 'spurts' of sound with silent gaps in between. This was never the case > > | with STABLE. Other times it's fine. > > | > > | When I looked at my dmesg output I noticed some changes between STABLE > > | and CURRENT for the pcm0 device. Under STABLE I only got two messages: > > | pcm0: port 0x18c0-0x18ff,0x1c00-0x1cff irq 11 at > > device 31.5 on pci0 > > | pcm0: > > | Under CURRENT I get a third: > > | > > | pcm0: measured ac97 link rate at 512000000 Hz > > > > There is a calibration step in the driver to determine the clock rate of the > > AC97 link. What you are seeing is the calibration step failing and setting a > > bogus ac97 link rate. I took a cursory look a couple of weeks back and it > > smelt like the timecounter initialization point changed, but haven't gotten > > around to looking closer and fixing the driver. > > If this were true then I'd be very concerned. Let me know what you > find. For what it's worth, my ICH3 setup is still working fine when > loaded at boot, though my kernel is about 2 weeks old. I have a system with problems and would be happy to help out as much as I have the time for. Unfortunately, I have a project due at work on Monday, and will be on vacation the rest of the week (but on line Tuesday and Wednesday). I'm afraid that I have never written a driver for FreeBSD, so I may be of limited help. I have written drivers or other OSes, but they were all written in assembly, not C and I wrote the last one at least 15 years ago. But I am will to do what I can, at least test code others provide. R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634