MacBook only uses 2 of 4 speakers
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pulseaudio (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
The sound on my MacBook (2.1) is not as good in Ubuntu as in Mac OS.
I think this is because PulseAudio uses only 2 speakers. (I guess the MacBook has 2 speakers and 2 subwoofers.)
In the volume prefs, it does show 4 sliders but only 2 of them seem to do something.
The profile is "Surround analogique 4.0 Output" (Analogic surround 4.0 Output).
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: pulseaudio 1:1.0-0ubuntu3.1
ProcVersionSign
Uname: Linux 3.0.0-14-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/pcmC0D0p: pierre 9988 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0x50440000 irq 43'
Mixer name : 'SigmaTel STAC9221 A1'
Components : 'HDA:83847680,
Controls : 21
Simple ctrls : 13
Date: Mon Dec 12 01:21:29 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/27/07
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB21.88Z.
dmi.board.
dmi.board.name: Mac-F4208CAA
dmi.board.vendor: Apple Inc.
dmi.board.version: PVT
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAppleInc
dmi.product.name: MacBook2,1
dmi.product.
dmi.sys.vendor: Apple Inc.
Changed in pulseaudio (Ubuntu): | |
status: | New → Confirmed |
I have been able to enable the second set of speakers with xfce4-mixer.