[alsa-devel] snd_pcm_drop causing lockup with DMix

Hi,

A couple of weeks ago I reported a rather serious bug #4914 that can cause a multi-threaded using ALSA to lock up so that it can only be ended with SIGKILL.

I maintain the ALSA output part of Audacious, and I need to be able to play audio in one thread of the program and then signal that thread to stop from another. The way to do this in ALSA, if I understand correctly, is to interrupt the thread that is sending audio with a call to snd_pcm_drop. But using DMix makes the first thread hang up in a snd_pcm_wait call with a timeout of -1.

Is anyone working on this bug? Is there any more help I can provide?

John Lindgren