<div>On 8/18/07, stan <<a href="mailto:eiqep_eiwo_y@cox.net">eiqep_eiwo_y@cox.net</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi, I have an application that opens the sound card. With the latest updates it will still open it as default device but can no longer open it as plughw:0,0. The error I get is cannot open audio device "plughw:0,0" (Device or resource busy) When I run powertop, I see that the driver has a lot of interrupts even though there is no sound running. Top causes for wakeups: 43.9% (100.6) <interrupt> : ohci_hcd:usb2, eth0 20.5% ( 46.9) <interrupt> : ICE1724 9.6% ( 22.0) <interrupt> : libata 6.4% ( 14.6) at-spi-registry : schedule_timeout (process_timeout) 4.6% ( 10.5) X : do_setitimer (it_real_fn) 4.4% ( 10.0) /usr/bin/sealer : schedule_timeout (process_timeout) Perhaps this is normal, but given the device busy error above it makes me suspicious that there is something wrong. Sound plays normally using audio player, but it uses the default device. I notice that the usage drops by about half for ICE1724 when the sound is playing. I'll probably do a debug of this at some point and post any findings.</blockquote><div> that may be related to the pulse audio changes you have to use default to play sound with alsa. </div> </div>