Hi > The primary reason for this is that most audio drivers produce > relative loud crackling noises when you open or close them. Upstream > ALSA is now working on minimizing these issues, but currently you get > those even with the newest intel-hda drivers. > > OTOH keeping the devices open is indeed detrimental for power > consumption and hence PA from SVN (lennart branch, the upcoming 0.9.7) > now features a new module "module-suspend-on-idle" which will suspend > all devices when they are idle for too long. For the ALSA case this > means that the device is closed when idle. > So, if you want to save power and have sane sound drivers+hardware, > load that module. If you don't care about power consumption or care > about those crackling noises, don't load them. The default config will > now load it. Tht sounds good w.r.t to unloading when idle for longer time .. But for now,say i keep the device open, and i avoid writing zeroes to it wen no client is attached, which i tried to do by commenting out writing silence to alsa sound card and simply return from do_write() . This apparently hogs the CPU and daemon gets terminated .. So writing zeroes seems to be a necessary thing .. Though i dont understand why? -- Regards, Dsk -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20070904/526ff9b9/attachment.htm>
