On Monday, February 14, 2011 04:44:52 PM Colin Guthrie wrote: > 'Twas brillig, and Gene Kodadek at 14/02/11 16:21 did gyre and gimble: > > The result of this setup is that I have sound only when Jack is running, > > which is not exactly what I had in mind. What I want to achieve here is > > to have Pulseaudio off under ordinary circumstances, and only start > > when Jack is running. > > Really what should happen is that PA should run all the time. > > Initially jack is not running as the machine is presumably not a > sole-purpose audio-dev machine seeing as you mention the "only when jack > is running" case which implies it sometimes does not run. This means > module-udev-detect should detect and load module-alsa-card for you and > subsequently give you direct access to ALSA sinks/sources. > > When Jack runs, it should request access to the devices via dbus (PA and > Jack cooperate an 'device reservation protocol' that allows jack to ask > for the device at which point PA will grant access). > > At this point a special module (git master only) called > module-jackdbus-detect will detect that jack is running and > automatically load module-jack-sink and friends for you. > > Sadly this isn't 100% working just yet. PA "suspends" the alsa sinks > when it hands over to Jack rather than unloading them totally. This > means active streams (and even new ones) are not failed over to the new > jack sinks. This isn't ideal. > > More work is needed in the various PA modules and core to make this 100% > smooth. > > All the best > > Col I would consider PA running all the time to be an acceptable solution except for one thing: as it sits right now, I only have sound when Jack is running.
