mactel-support team mailing list archive

[Alex Murray <murray.alex@xxxxxxxxx>]

I've developed a patch against alsa-driver-1.0.22.1 which should fix the
headphone jack sense and volume control issues (which I've attached to
this bug), which you can test as follows:

First make sure you don't have any versions of linux-backports-modules-
alsa installed:

apt-cache --names-only search linux-backports-modules-alsa | cut -f 1 -d
' ' | xargs sudo apt-get remove --purge

Now download alsa driver source and the patch, and compile and install a
patched version of the driver:

cd ~
wget ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.22.1.tar.bz2
wget http://dl.dropbox.com/u/174251/alsa-driver-1.0.22.1-mb5.patch
tar xjf alsa-driver-1.0.22.1.tar.bz2
patch -p0 < alsa-driver-1.0.22.1-mb5.patch
cd alsa-driver-1.0.22.1
./configure
make
sudo make install

Now you need to reboot your machine. If this works I'll push the patch
upstream and hopefully we can get it applied to linux-backports-modules-
alsa as well.

** Attachment added: "alsa-driver-1.0.22.1-mb5.patch"
   http://launchpadlibrarian.net/37864494/alsa-driver-1.0.22.1-mb5.patch

-- 
Left speaker doesn't work, controls mixed up on Apple MacBook[Pro] (5,1)
https://bugs.launchpad.net/bugs/337314
You received this bug notification because you are a member of Mactel
Support, which is the registrant for Mactel Support.

Status in ALSA driver: Unknown
Status in Mactel Support: Confirmed
Status in “alsa-driver” 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