Pulseaudio /w USB Speakers: only left Channel [Solved]

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Pulseaudio /w USB Speakers: only left Channel [Solved]

Postby kutte128 » Mon Mar 28, 2011 13:13

Hi,

i have a strange problem with pulseaudio and my new USB-speakers.
I have absolutely no sound on my right channel. Using alsa-only it works great (in XP also) - so the speakers are ok.
Pulseaudio works great with my Headphones.

In Pulseaudio Volume Meter i have have signals on both channels.

How do i get both channels on?

[Solved]:
i had to put
Code: Select all
pcm.pulse { type pulse }
ctl.pulse { type pulse }

in ~/.asoundrc
one of those settings brought me 2-channels

sincerely,
kutte128
Last edited by kutte128 on Fri Apr 01, 2011 10:30, edited 1 time in total.
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Re: Pulseaudio /w USB Speakers: only left Channel [REOPEN]

Postby kutte128 » Thu Mar 31, 2011 23:33

ok, it worked for some days, no its there again.
i only have the left channel.
whats wrong with pulseaudio?
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Re: Pulseaudio /w USB Speakers: only left Channel [REOPEN]

Postby Fitzcarraldo » Fri Apr 01, 2011 0:07

Do you see both USB speaker channels in ALSA Mixer, or only a composite channel? If only a composite, install ALSA Mixer GUI (the package media-sound/alsamixergui), as that shows both stereo channels, and perhaps you can adjust the right channel. If your USB sound device is e.g. Card 1 then you would launch ALSA Mixer GUI from the command line as follows:

Code: Select all
alsamixergui -c 1


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Re: Pulseaudio /w USB Speakers: only left Channel [REOPEN]

Postby kutte128 » Fri Apr 01, 2011 10:29

Thank you!

i tried alsamixer, gnome alsa mixer, which shows both channels and the Pulseaudio mixer where i also see both active(!) signals and controls for left/right channels.

with alsamixergui i saw that the right channel was muted.
but ... why? i didn't change anything and the error was gone with .asoundrc

sincerely,
kutte128
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Re: Pulseaudio /w USB Speakers: only left Channel [Solved]

Postby Fitzcarraldo » Fri Apr 01, 2011 12:04

No idea, I'm afraid. Bug in ALSA? Bug in PulseAudio? Who knows?! Glad ALSA Mixer GUI was of help. I have an icon for it on my Panel and it is very handy: no need to fire up Konsole and run ALSA Mixer in it any more. Just one click and I have an ALSA Mixer in the GUI.
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