At Fri, 13 Aug 2010 17:37:33 +0100, Lex F wrote: > > Hi > > Thanks for your reply. I tried to answer your questions below. > > On 13 August 2010 17:06, Takashi Iwai <tiwai@xxxxxxx> wrote: > > We have had many problems with VMware, too :) > > Which sound backend are you using? Direct ALSA / dmix or PA? > > I believe it's direct ALSA, I have choppy output even with > aplay /usr/share/sounds/alsa/*.wav It doesn't mean always that you use direct ALSA. Try to pass -Dplughw option to aplay. > > Actually, there is no real interrupt, but just the virtual one, > > thus it can be never accurate. So, rather the question is how the > > driver is tolerant for sloppy IRQ updates. > > > > Usually, when the period size is large and the buffer have many > > periods (not two), the delayed update works more stably. > > I am afraid I don't understand this :) The comment above is rather to Jaroslav. > I am compiling a kernel with the following options enabled: > CONFIG_SND_PCM_XRUN_DEBUG, CONFIG_SND_VERBOSE_PROCFS, > CONFIG_SND_DEBUG > > Would any of these help to determine the cause and suggest a fix? Fix VirtualBox :) Or try to set xrun_debug and check kernel log as Jaroslav wrote. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
