mactel-support team mailing list archive

[Chris Lasher <chris.lasher@xxxxxxxxx>]

So typically on most laptops, when the headphone plug is inserted into
the headphone jack, sound to the internal speakers is cut off and plays
through only the headphones. (This is the behavior in OS X, for example,
and I believe it was also the 8.10 behavior.) I thought this was
implemented in hardware, but apparently it's implemented by the sound
driver, as Kacper's patch demonstrates. I think someone else already
requested this above, but would it be possible to have a patch that
mutes the internal speakers when headphones are inserted?

Also, and I believe this was also mentioned above, could we have a patch
where Master controls the volume of the headphone output, too? Of
course, this would only be useful if the above muting of speakers was
implemented, as well.

Kacper, are you the only developer working on this? Is anyone else
involved with the ALSA project looking into this?

-- 
Left speaker doesn't work, controls mixed up on Apple MacBook[Pro] (5,1)
https://bugs.launchpad.net/bugs/337314
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Support, which is the registrant for Mactel Support.

Status in ALSA driver: Unknown
Status in Mactel Support: Confirmed
Status in “alsa-driver” source package in Ubuntu: New

Bug description:
Reporting this bug for another user...

In MacBook and MacBookPro 5,1 (aluminium, late 2008) the soundcard works out of the box only with headphones, and to turn speakers on it is necessary to manually set the 6 channels. In that case, sound is heard both on headphones and right and center speaker; the left speaker doesn't work yet.

This bug is confirmed by several users, see the additional information attached.

della@raker:~$ lspci | grep -i audio
00:08.0 Audio device: nVidia Corporation MCP79 High Definition Audio (rev b1)
della@raker:~$ grep Codec /proc/asound/card0/codec#*
Codec: Realtek ALC889A