Date: Wed, 14 Sep 2011 10:20:53 -0400 From: "Daniel Staal" <DStaal@usa.net> To: freebsd-questions@freebsd.org Subject: Re: Thinkpad audio question 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>
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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. ---------------------------------------------------------------
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