Public bug reported:
The macbook jack works both as a normal audio jack and a digital optical
audio out jack. Which is used is suppose to be dependent on which cable
you plug in, there is a small switch inside which is pressed when the
digital optical audio out wire is plugged in. In ubuntu the red light
comes on and shines out of the jack and sound is very faint out of the
inbuilt speakers, ubuntu is wrongly detecting the optical audio out and
it seems to be on by default. I can confirm its not hardware as I'm dual
booting with OS X and when i boot into that it functions correctly. When
the digital optical audio out lead is plugged in its suppose to disable
the internal speakers which it does (sort of - its played very quietly
through the internal speakers) however like i said above, no cable is
plugged in so it should default to the internal speakers.
I am happy to provide any information and help debug to get this fixed.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
NonfreeKernelModules: nvidia wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jessica 1682 F.... pulseaudio
/dev/snd/pcmC0D0p: jessica 1682 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'NVidia'/'HDA NVidia at 0x93380000 irq 16'
Mixer name : 'Cirrus Logic CS4206'
Components : 'HDA:10134206,106b0100,00100301'
Controls : 17
Simple ctrls : 10
Date: Thu Aug 25 23:10:11 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:NVidia failed
Symptom_Card: Internal Audio - HDA NVidia
Symptom_Jack: Green Headphone Out, Rear
Symptom_Type: None of the above
Title: [MacBook6,1, Cirrus Logic CS4206, Green Headphone Out, Rear] Playback
problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/27/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB61.88Z.00C8.B00.0908271503
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-F22C8AC8
dmi.board.vendor: Apple Inc.
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F22C8AC8
dmi.modalias:
dmi:bvnAppleInc.:bvrMB61.88Z.00C8.B00.0908271503:bd08/27/09:svnAppleInc.:pnMacBook6,1:pvr1.0:rvnAppleInc.:rnMac-F22C8AC8:rvr:cvnAppleInc.:ct10:cvrMac-F22C8AC8:
dmi.product.name: MacBook6,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 natty running-unity
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https://bugs.launchpad.net/bugs/834177
Title:
[MacBook6,1, Cirrus Logic CS420] Playback problem6, Green H
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