"Master Mono" (actually LFE) is not controlled by default
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
alsa-driver (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
On my laptop, Alsa Mixer and the gnome panel volume control applet show two channels which both control different subsets of the laptop's built-in speakers; Master and "Master Mono". I think Master controls the smaller speakers and "Master Mono" the larger/bass speakers.
By default, the gnome volume control applet (and also the dedicated volume keys on my laptop) only control Master, and ignore "Master Mono". This leaves "Master Mono" set at a high volume all the time, which sounds crap.
To WAR this issue, in Gnome, I go to System -> Preferences -> Sound, and change the selection in the list box under "Default Mixer Tracks" to include both Master and "Master Mono". Now the volume applet and volume keys
control both channels, which works great.
This should be automatic (part of the volume control applet, or the driver, or ...); I shouldn't have to configure this myself.
Attaching output from "amixer -c0".
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Card0.Amixer.info:
Card hw:0 'ICH6'/'Intel ICH6 with STAC9750,51 at irq 16'
Mixer name : 'SigmaTel STAC9750,51'
Components : 'AC97a:83847650'
Controls : 38
Simple ctrls : 24
DistroRelease: Ubuntu 10.04
Package: alsa-base 1.0.22.
PackageArchitec
ProcEnviron:
PATH=(custom, user)
LANG=en_US.utf8
SHELL=/bin/bash
ProcVersionSign
Tags: lucid
Uname: Linux 2.6.32-19-generic i686
UserGroups: Domain Users Power Users Users adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 09/19/2005
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0MD541
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Inspiron 9300
dmi.sys.vendor: Dell Inc.
FYI, this is in Ubuntu 9.04 - Jaunty.
HW is Dell Inspiron 9300
Launchpad doesn't have as many required fields as the Bugzilla I'm used to...