mactel-support team mailing list archive

[Chris Lasher <chris.lasher@xxxxxxxxx>]

On further exploration, it seems that each level of the channel has its
own peculiar noise. The oscillation is at level 0, but the following
levels are extremely noisy: 8, 17, 27, 36, 45, 55, 64, 73, 83, 92. It's
reproducible to get the noise on each of these levels.

I did not experience this noise before the patch, using the default ALSA
that shipped with Jaunty, and the option of snd_hda_intel model=mbp3.

-- 
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” 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