Op 12-4-2011 18:53, Tanu Kaskinen schreef: > On Tue, 2011-04-12 at 12:30 -0400, Sean McNamara wrote: >> Hi, >> >> On Tue, Apr 12, 2011 at 12:15 PM, duportail<poort at telenet.be> wrote: >>> Try to test the new xubuntu 11.04 with kde on a multi-user system. >>> The first user (for example user1) can log in and gets a default sink from >>> pulse. >>> The second user(for example user2) that will log in gets a auto_null because >>> pulse did not found any sinks. >>> If i log out user1, than user2 can get a default sink by kill and start >>> pulse. >>> Where should be the reason? >> This is the "classic" multi-user problem: you're using a soundcard >> without hardware mixing, so only one ALSA application can take direct >> control of the hardware device at a time. user1's pulseaudio daemon >> takes control of it, so obviously user2's PA daemon will just get >> "Device or resource busy" when trying to snd_pcm_open() on hw:0 (for >> example). This problem has existed since ALSA existed. There's no >> direct fix without scrapping the API and rewriting it. > Actually, this situation is supposed to be handled just fine (unless > duportail expects both users to be able to use the audio hw > simultaneously, which he doesn't mention). If this doesn't work, xubuntu > is broken. Some things that can cause this problem: the users are in the > "audio" group, consolekit isn't running or consolekit's udev-acl isn't > in use. > Maybe xubuntu is broken.I will wait until further releases gd
