no beep any more (SOLVED)

[Matthias Apitz]

El día Tuesday, August 02, 2016 a las 07:36:23AM +0200, Matthias Apitz escribió:

> I have had a chat in some forum about Chromebooks. The people there are
> not willing to help further because "...we only support plain vanilla
> ChromeOS at this forum." Full thread here:
> https://productforums.google.com/forum/#!topic/chromebook-central/-MXyMACfcCU;context-place=forum/chromebook-central
> 
> At least someone pointed out that these devices only have stereo audio
> speakers (which do fine in my case) and no other "pc speaker" on
> motherboard. As the speakers do fine, this must be some problem in our
> FreeBSD kernel / audio driver, not sending the printf '\7' to the audio
> device.
> 

Now, as it was clear, that it was not a hardware issue, I found after
checking the mixer settings, that we have two sound devices:

$ cat /dev/sndstat
Installed devices:
pcm0: <Intel Haswell (HDMI/DP 8ch)> (play)
pcm1: <Realtek (0x0283) (Analog 2.0+HP/4ch)> (play/rec) default

$ mixer -f /dev/mixer0
Mixer vol      is currently set to 100:100
Mixer pcm      is currently set to 100:100

$ mixer
Mixer vol      is currently set to  91:91
Mixer pcm      is currently set to 100:100
Mixer speaker  is currently set to 100:100
Mixer mic      is currently set to 100:100
Mixer rec      is currently set to 100:100
Mixer igain    is currently set to   0:0
Mixer ogain    is currently set to 100:100
Mixer monitor  is currently set to  50:50
Recording source: mic, monitor

setting:

$ mixer igain 50
Setting the mixer igain from 0:0 to 50:50.
$ printf "\7"

make it beep

$ mixer igain 0
Setting the mixer igain from 50:50 to 0:0.

switches off the beeping through the stereo speaker; I have no idea what
'igain' has todo with this...

	matthias


-- 
Matthias Apitz, ✉ guru at unixarea.de, ⌂ http://www.unixarea.de/  ☎ +49-176-38902045
"Wer übersieht, dass wir uns den anderen weggenommen haben und sie uns wiederhaben wollen,
kann von den Kämpfen der letzten Tage keinen verstehen. Und kann natürlich auch keinen
dieser Kämpfe bestehen." Hermann Kant in jW 1.10.1989