This is on an embedded ARM device, with a custom driver. That's interesting. I never thought about the cache angle. Is there any sort of hack I can put to check if that is the problem? On 7/10/07, Jaroslav Kysela <perex@xxxxxxx> wrote: > > On Mon, 9 Jul 2007, Aaron "Caustik" Robinson wrote: > > > We actually dumped the pcm data as it was arriving to the driver (via > the > > trigger start and irq functions), and it was corrupted at that point. > Also I > > have dumped the pcm data after it has been mixed by the dmix plugin, and > it > > is fine there as well. > > Which hardware and driver? It seems like a driver (wrong pointer > management) or hardware issue. For example, ARM CPUs does not guarantee > cache coherency between two virtual address spaces pointing to one > physical space. > > Jaroslav > > > On 7/9/07, Takashi Iwai <tiwai@xxxxxxx> wrote: > > > > > > At Fri, 6 Jul 2007 20:28:13 -0700, > > > Aaron "Caustik" Robinson wrote: > > > > > > > > We have been having one heck of a time tracking down the cause of > some > > > ALSA > > > > audio playback issues. > > > > > > > > It appears that any time we play a very short sound (<64kb), either > the > > > > sound doesn't play at all, or only a fragment of it plays. We > haven't > > > had > > > > much luck finding a solution to this issue, then I found this thread > on > > > the > > > > history of this email group: > > > > > > > > > > > > http://mailman.alsa-project.org/pipermail/alsa-devel/2007-April/000526.html > > > > > > > > Our problem is pretty much exactly like his issues relating to <64k > > > sounds. > > > > > > > > My question is - has anybody else run into this problem? To the OP > of > > > the > > > > above thread, if you're still listening - did you ever find a > solution > > > to > > > > your problem? I'd be very interested to hear any help you can > provide. > > > > > > It works fine with my systems, so the problem should be pretty > > > driver-specific... > > ----- > Jaroslav Kysela <perex@xxxxxxx> > Linux Kernel Sound Maintainer > ALSA Project, SUSE Labs > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
