Sound OK using built-in speakers, but loud "static" with headphones

David Wolfskill david at catwhisker.org
Fri Apr 17 13:48:42 UTC 2015


On Fri, Apr 17, 2015 at 11:07:40AM +0200, Lars Engels wrote:
> ...
> I "saw" the same yesterday on my notebook. It turned out that the
> earphones I used have keys to control a smartphone and an integrated
> microphone. Running "mixer mic 0" and "mixer rec 0" muted the static.

Brilliant!  ... but when I tried connecting a pair of dumb little
speakers (no keys; no mic), I still hear static, even after:

g1-254(10.1-S)[18] foreach n (`jot 4 0`)
foreach? echo "    mixer ${n}:"
foreach? mixer -f /dev/mixer$n
foreach? echo ""
foreach? end
    mixer 0:
Mixer vol      is currently set to   0:0
Mixer pcm      is currently set to   0:0

    mixer 1:
Mixer vol      is currently set to   0:0
Mixer pcm      is currently set to   0:0

    mixer 2:
Mixer vol      is currently set to   0:0
Mixer pcm      is currently set to 100:100
Mixer speaker  is currently set to  59:59
Mixer line     is currently set to   1:1
Mixer mic      is currently set to   0:0
Mixer mix      is currently set to  37:37
Mixer rec      is currently set to   0:0
Mixer igain    is currently set to   0:0
Mixer ogain    is currently set to 100:100
Recording source: mic

    mixer 3:
Mixer vol      is currently set to   0:0
Mixer pcm      is currently set to   0:0
Mixer rec      is currently set to   0:0
Mixer igain    is currently set to   0:0
Mixer ogain    is currently set to   0:0
Mixer monitor  is currently set to   0:0
Recording source: monitor

g1-254(10.1-S)[23] 


I appreciate the rather clever insight, though! :-}

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Those who murder in the name of God or prophet are blasphemous cowards.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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