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I have mount surround sound in Ubuntu 14.04. When I am testing it with command:

speaker-test -Dplug:surround51 -c6 -l1 -twav

eveyting sounds fine but when I am using System Settings > Sound > Test Sound, the results differ. I got poor performance on right channels(right channels pause about every 0,5 sec). While listening to music I get this poor performance from the second test and I do not get why.

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If I'm not wrong, speaker-test calls on ALSA directly for the test whereas Ubuntu uses PulseAudio to interface with ALSA. That's why you're hearing a difference.

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  • Can I force my ubuntu to always call on ALSA directly so that I always get better sound ? – Al Bundy Sep 21 '14 at 13:23
  • Did you read through that forum post? – amanthethy Sep 22 '14 at 0:17
  • Yes I did. I tried to make my Rhythmbox work with alsa and I have followed this instruction: webupd8.org/2010/03/…. Unfortunately the sound is still poor. I do not know what else should I do to receive pure sound from the 1st test while listening to music. – Al Bundy Sep 22 '14 at 6:07

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