On Fri, 27 May 2016, at 12:15 PM, Hannu Lounento wrote: > Hi, > > I have a problem that sound played by a custom application using the ALSA > API is > cracked for the first ca. 10 seconds. > > I've reproduced the same problem with aplay: I'm playing a short (~19 > seconds) > wav file and the first ~7 seconds of the playback is cracked / has gaps > but > after that audio is played back properly, i.e. there are no noticeable > cracks in > the playback. Have you tried setting tsched=0 in module arguments (to either module-udev-detect or module-alsa-card, whichever your system is using to load the card). This could just be that your card doesn't provide pointer reporting with sufficient granularity to do timer-based scheduling. -- Arun