I figured it out; there's a race condition using the sequencer with the preemptible kernel feature turned on with 2.5.20 and multiple processors. Turning off kernel preemption allows the sequencer to operate fine on a SMP machine. FYI. - Brent
On Fri, 14 Jun 2002, Brent Cook wrote: > Howdy folks, > > I decided to understand ALSA's sequencer today, but had a bit of a > problem. It appears that using aplay or doing a 'cat /dev/sequencer' > causes my system to freeze completely. This is with an ad1816 (Terratec > base-1) card. Anyone else experience similar problems before I leap into > the problem more deeply. Playing with the midi stuff appears to work fine; > also, the CVS version of Rosegarden doesn't have any problems because it > has its own sequencer and just interfaces with midi devices directly. > > I'm using kernel 2.5.20 with its built-in ALSA drivers and the utilities > from 0.9r1. I diffed the driver from ALSA CVS and the one I'm using, and > they appear to be the same. > > Thanks in advance, > Brent > > > > > _______________________________________________________________ > > Don't miss the 2002 Sprint PCS Application Developer's Conference > August 25-28 in Las Vegas - >http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink > > _______________________________________________ > Alsa-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-user > _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas - http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
