On Wed, 10.02.10 23:22, Colin Guthrie (gmane at colin.guthr.ie) wrote: > > 'Twas brillig, and Lennart Poettering at 10/02/10 22:36 did gyre and gimble: > > On Tue, 09.02.10 09:43, Markus Rechberger (mrechberger at gmail.com) wrote: > > > >>> Indeed. PA is principally meant to be run per-user. Each user logged in > >>> will have their own PA process running and each will monitor a system > >>> service called "ConsoleKit" which tracks which user is active. We adhere > >>> to whatever ConsoleKit tells us with regards to which user is currently > >>> "active" (see ck-list-sessions) and only the active user has access to > >>> the sound hardware. > >>> > >>> Think about how switching users works (on Linux and on Windows/OSX). > >>> Only the user whose desktop is currently presented will be allowed to > >>> use sound, the other user's sound is "corked" until they become active > >>> again. > >> > >> > >> Bad example as usual, on OSX everyone (who's permitted to use the > >> audio unit) can just log in and use the audio unit. > > > > Do we need to have this pointless discussion every second months? > > > > Last time I checked OSX audio of the sessions that are not in the > > foreground is paused, and only one session has access to the sound > > cards at a time. Exactly like on PA, or on Windows. > > This is correct. There is one difference tho' on OSX (which is IMO > horrible) and that is the fact that an inactive user can ssh in and play > sound (via e.g. afplay command line app). I annoyed the hell out of > someone in my office today by doing just this. > > But from a user-facing perspective - e.g. logged in user they using fast > user switching - it behaves exactly as you described. > > What I didn't try was issuing a "sleep 10s; afplay foo.mp3" and > initiating the switch. I'll try that tomorrow. So you can even monitor everything he says via the mike? If so, could you please provide a live stream on the internet please? ;-) Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4
