Not at all LFE wiring on codecs are equal. I agree that it may be unrelated,
but we can't deduce that from your hw without actually trying it.

Yes, the second suggestion was interpreted correctly.

On May 15, 2010 10:50 PM, "Stephen Warren" <email address hidden> wrote:

> 1) set enable-lfe-remixing = yes (and uncomment) in
/etc/pulse/daemon.conf;

I believe that option affects something unrelated to this bug.

If have no problem with getting an audio signal sent to the LFE speaker;
I haven't noticed any application/configuration/... where sound isn't
sent there as expected.

The only issue is the volume control on that speaker is defaulted
low/zero/muted (don't recall which) so I simply can't hear the sounds
being sent there. When I simply adjust the "Master Mono" volume control,
the LFE speaker works fine.

(Perhaps the HW is extracting the LFE signal from the stereo signal sent
to the main two speakers itself, so it doesn't need SW to concoct a 3rd
channel explicitly for the LFE; that'd seem far more likely to work than
expecting SW to come up with a non-standard 2.1 signal.)

> 2) make sure Master Mono is unmuted prior to GNOME session login

Do you have any tips how to do that? If "Master Mono" is unmuted, does
that mean the regular volume control will suddenly start changing the
"Master Mono" volume too, or are you just recommending setting "Master
Mono" to something unmuted and say mid-range volume and leaving it
there?

Thanks.

--
"Master Mono" (actually LFE) is not controlled by default
https://bugs.launchpad.net/bugs/369036
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Audio Team, which is subscribed to alsa-driver in ubuntu.

Status in “alsa-driver” package in Ubuntu: Confirmed

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/controlC0:  swarren    1849 F.... pulseaudio
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 1.0.22.1+dfsg-0ubuntu3
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
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.:bvrA05:bd09/19/2005:svnDellInc.:pnInspiron9300:pvr:rvnDellInc.:rn0MD541:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 9300
dmi.sys.vendor: Dell Inc.