On Sat, 20.10.07 18:12, Martin Uecker (muecker at gmx.de) wrote: > > Hi, > > I am trying to redirect the sound of my notebook to > an usb sound card (soundblaster) connected to a NSLU. > This does not work because somehow pulseaudio (version: > Version: 0.9.6-2 from Debian unstable) produces > only a series of slowly repeated clicks. When I connect > the usb sound card directly to the notebook a pulseaudio > daemon (version 0.9.6-1ubuntu2 from gutsy) running on the > notebook can use it without problems. mpd on the NSLU can > use the sound card without problems too. > > Any suggestions how to debug this? Hmm, yeah. Could you please check the CPU load PA imposes on the NSLU? It might be a good idea to increase the fragment size used by PA by a big margin. Also, make sure to enable RT scheduling. PA is not really prepared to work on embedded CPUs, where libatomic_ops emulates atomic ops with mutexes and where the kernel is compiled with small HZ. Especially with 0.9.7 make sure to run a a kernel with HZ=1000 with preempt enabled, and run PA as RT process for optimal results. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4
