Description of problem: When playing two mp3 songs at once, PulseAudio starts to generate a lot of crackling. Version-Release number of selected component (if applicable): [vedran@kalopsia ~]$ pulseaudio --version I: caps.c: Limited capabilities successfully to CAP_SYS_NICE. I: caps.c: Dropping root priviliges. I: caps.c: Limited capabilities successfully to CAP_SYS_NICE. pulseaudio 0.9.12 How reproducible: Every time. Steps to Reproduce: 1. mplayer first-song.mp3 2. mplayer second-song.mp3 Actual results: Both songs played + lots of crackling. Expected results: Both songs played. Additional info: If I play both songs using hardware mixing on my E-mu 1212m card, it works normally. If I play both songs on same card using pulseaudio mixing, it crackles. User is in pulse-rt group.
There is additional information in this mailing list thread: https://tango.0pointer.de/pipermail/pulseaudio-discuss/2008-September/002374.html However, it isn't specific to HDA. Happens with other cards too.
play something with "padsp realplay", pause it, then continue, you will hear some a fierce noise. Is this a same problem or not?
*** This bug has been marked as a duplicate of bug 466840 ***