Thinkpad audio question
Daniel Staal
DStaal at usa.net
Wed Sep 14 14:20:54 UTC 2011
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.
---------------------------------------------------------------
More information about the freebsd-questions
mailing list