Good news, after upgrading to Kubuntu 13.10 the problem is completely
solved. The headphones work perfectly now.
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https://bugs.launchpad.net/bugs/1184025
Title:
Hey Raymond, sorry for late reply.
i don't understand how do 5.1 or 7.1 work in headphone ?
do each headphone has a subwoofer ?
I took a photo of one piece of the headphones and I think there's only one
speaker in there - http://i.imgur.com/OA6ZmWq.jpg
As for the sound, when you enable 7.1 on
** Attachment added: razer speaker test
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1184025/+attachment/3883583/+files/razer%20speaker%20test
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Hey Raymond,
do you mean the log was obtained when you switch to 7.1 since there is no
stereo ?
No, it was set to 2.0.
seem you have selected 5.1 profile in sound preference
Correct, should I change it?
do Center or LFE need mix of left and right channels when upmixing from
stereo ?
Hi Raymond,
do your 7.1 headset support stereo ?
Its external sound card has a switch for 2.0/7.1 speaker configuration, so I
guess it does.
pot the pulseaudio verbose log
I'll attach it below this comment. I launched Amarok and played a song for a
couple seconds, heard crackling and paused
** Attachment added: pulseverbose.log
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1184025/+attachment/3862598/+files/pulseverbose.log
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** Attachment added: lsusb log
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1184025/+attachment/3862599/+files/lsusb%20log
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Kaito (kaito-linux), I'm sorry but your advices didn't fix the problem
on Kubuntu 13.04. The sound still crackles.
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Title:
I noticed if you switch playback profiles multiple times (from 5.1 to
7.1 and back again), it will eventually work properly without crackling.
However, after some time or a restart it breaks again. This problem
occurred also in Ubuntu 12.04, 12.10 and Kubuntu.
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