[pulseaudio-discuss] M-Audio Delta 1010

Matt Zagrabelny mzagrabe at d.umn.edu
Tue Jul 1 06:54:27 PDT 2014

On Mon, Jun 30, 2014 at 9:53 AM, Alexander E. Patrakov
<patrakov at gmail.com> wrote:
>> There is one issue regarding the per channel volume. I am jacked into
>> "Side Right" channel, but adjusting the Side Right channel volume in
>> the output tab of pavucontrol doesn't change the volume - only the
>> "Front Right" volume slider affects the volume. Digging further
>> (jacking into each channel and sliding the per channel volumes) only
>> the Front Left/Front Right channels adjust the volume for any of the
>> channels.
>> Front Left (1) will affect: Front Left (1), Rear Left (3), Front
>> Center (5), Side Left (7)
>> Front Right (2) will affect: Front Right (2), Rear Right (4), Front
>> Center (5), Side Right (8)
> You can reduce the amount of time needed to fix the issue by posting a link
> to the very very verbose pulseaudio log that captures, among other things,
> the process of adjusting the volume with the Side Right knob in pavucontrol.
> Also, could you please verify that the same "which knob controls what"
> picture holds when playing native 5.1 surround content with a
> semi-known-good player, as in the example below?
> wget http://www.sr.se/laddahem/multikanal/dts/Prelude.zip
> unzip Prelude.zip
> ffplay -f dts Prelude.wav
> (yes I know that ffplay and gstreamer disagree on the channel map for 5.1
> content)
>> The "subwoofer" or "Rear Center" channel (6) did not output any sound
>> when I played my ogg123 -d pulse. However, the speaker-test was
>> successful in outputting sound out that channel.
> This is expected for typical stereo content (and even with most surround
> concerts on DVDs and BluRays, because they are actually 5.0, not 5.1) and
> the default settings, and can be controlled with the enable-lfe-remixing
> setting in /etc/pulse/daemon.conf.

Thanks for all your help, Alexander. I'm derailed on something else
right now, but hope to try out your suggestions in about a week.



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