You don't need to bypass pulseaudio or rip your entire system apart.
How about just commenting out the block where it says getenv..NO_SIMD...
keyword "NO_SIMD"
src/daemon/pulseaudio/main.c ln ~877
// fixes cracking/rattling/buzzing sounds with 5.1
/* if (!getenv("PULSE_NO_SIMD")) {
pa_cpu_init_x86();
pa_cpu_init_arm();
}*/
pa_log(_("ANDY_FIX: Disabled SIMD."));
pulseaudio -vvvv will show ANDY_FIX so you can make sure the code
worked, and also you should have no crackling.
It fixed it for me instantly and I can't imagine the problem I'm having
is different than what anyone else is having, as it matches the original
description. I suspect if there are other problems then different bug
reports should be made. This works around the SIMD issue.
--
Highpitched Rattling like Sound with 5.1 Surround Configuration on Karmic Koala
https://bugs.launchpad.net/bugs/445849
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