From owner-freebsd-questions@FreeBSD.ORG Wed Sep 14 14:20:54 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9A1D01065670 for ; Wed, 14 Sep 2011 14:20:54 +0000 (UTC) (envelope-from DStaal@usa.net) Received: from mail.magehandbook.com (173-8-4-45-WashingtonDC.hfc.comcastbusiness.net [173.8.4.45]) by mx1.freebsd.org (Postfix) with ESMTP id 6F8558FC18 for ; Wed, 14 Sep 2011 14:20:54 +0000 (UTC) Received: from www.magehandbook.com (www.darkmindweb.net [192.168.1.100]) by mail.magehandbook.com (Postfix) with ESMTP id 3A84B262 for ; Wed, 14 Sep 2011 10:20:53 -0400 (EDT) Received: from 152.121.16.254 (SquirrelMail authenticated user daniel) by www.magehandbook.com with HTTP; Wed, 14 Sep 2011 10:20:53 -0400 Message-ID: <0eb2d303a45322b2e3054f3a31e7c7c4.squirrel@www.magehandbook.com> In-Reply-To: <20110914134446.GA9714@itcom245.staff.itd.umich.edu> References: <20110914134446.GA9714@itcom245.staff.itd.umich.edu> Date: Wed, 14 Sep 2011 10:20:53 -0400 From: "Daniel Staal" To: freebsd-questions@freebsd.org User-Agent: SquirrelMail/1.4.21 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal Subject: Re: Thinkpad audio question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Sep 2011 14:20:54 -0000 On Wed, September 14, 2011 9:44 am, William Bulley wrote: > A friend of mine has an IBM T500 Thinkpad which is nearly identical to > the one I have. We both have interesting audio issues. Any ideas as > to why the problems explained below exist would be greatly appreciated. > > My T500 shows two devices /dev/mixer0 and /dev/mixer1 corresponding to > pcm0 and pcm1 as displayed by % cat /dev/sndstat in 8.2-PRERELEASE from > January 2011. I am able to hear audio on the built-in speakers using > /dev/mixer1 but not able to hear audio when plugging stereo headphones > into the green "audio out" jack. However, the speaker audio is muted > when the headphones are plugged in. I have tried two different head > sets to rule out flawed hardware. > > My friend's T500 is more up-to-date than mine (likely 8.2-STABLE) but > in his case headphone audio works perfectly and he has had no luck in > getting audio out of his built-in laptop speakers. Very weird... > > This situation sucks, but we have not been able to suss out what the > problem is. He and I have been running FreeBSD for over a decade, so > we are not clueless, but this laptop audio weirdness has us stumped. Quick thought: What versions of the BIOS are each of you running? Daniel T. Staal --------------------------------------------------------------- This email copyright the author. Unless otherwise noted, you are expressly allowed to retransmit, quote, or otherwise use the contents for non-commercial purposes. This copyright will expire 5 years after the author's death, or in 30 years, whichever is longer, unless such a period is in excess of local copyright law. ---------------------------------------------------------------