[pulseaudio-discuss] system-wide daemon

[Lennart Poettering]

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