On Tue, May 03, 2011 at 11:09:56AM -0700, Baek Chang wrote: > I think you are correct in that there is an alsa bug. It seems that > pulseaudio 0.9.14 didn't exhibit this bug in the driver, but pulseaudio > 0.9.22 does. > It seems like the rewind is causing the driver to not have data in its first > hw buffer, the dropout in the beginning is a hw buffer size. I frequently recommend PulseAudio as a test suite for driver DMA implementations :)