On Wed, 25.11.09 13:37, Jeremy Nickurak (jeremy at nickurak.ca) wrote: > On Wed, Nov 25, 2009 at 11:48, Colin Guthrie <gmane at colin.guthr.ie> wrote: > > > PA will always remember what your app has chosen. So if you play something > > with an app for the very first time, it is assigned to the fallback device > > (we know no better). > > > > Is this the case even if you don't manually select one? Ie, the first time > it's used, it uses the "fallback" device. The second time, does it still go > to the "fallback", or does it go to the same device it "fell-back" to last > time? > > I'm hoping it's the former, in which case... what is the difference between > a fall-back device and a default-device? The former. The logic is basically this: If you never configured a particular device for a stream the device selection will always be fully automatic until you configure one. If you do not configure one recent PA versions even try to be smart when selecting a device and move telephony streams automatically to telephony headsets and so on. However, if you ever configured a particular device for a stream this configuration will be used if possible. "if possible" means that the device needs to be available (plugged in) of course. If the configuration is "not possible" we will revert to the same automatic device selection as described above, but the configuration will be kept, and later reevaluated when the configuration might suddenly become "possible" again, due to hotplug. That means: if the user configured something this takes absolute precedence and will never be overriden, unless it cannot be fulfilled, in which case we only override it temporarily and try to fulfill it as soon as it is possible again. We never rewrite the configuration on disk unless the user triggered it. Hope this clears things up. What I plan to add later on is that we keep a LRU list of configured devices for a stream, instead of just one. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4
