On Thu, 2016-02-25 at 13:57 +0100, Nazar Mokrynskyi wrote: > Started arecord and aplay in parallel - both are fine, nothing fails. I tried to look what has recently changed in the code that configures the hw params, and the only thing I found that somehow maybe could have caused the change in behaviour was this: https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/?id=810aa36189f82f77403826defa76a4f9f1f01454 If you add "tsched=false" to the line in /etc/pulse/default.pa that loads module-udev-detect, does that help? What version did you use before upgrading to 8.0? --Â Tanu