[pulseaudio-tickets] [Bug 76672] Pulseaudio not recognize active session correctly under some circumstance

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76672

--- Comment #2 from Kevin <kawing.chiu.sysu at gmail.com> ---
(In reply to comment #1)
> The SESSION suspend cause is used when pulseaudio doesn't have permission to
> use the sound card. The sound card permissions are controlled outside
> pulseaudio (maybe in logind, but I don't really know the details). It sounds
> like this is not a pulseaudio issue, unless you actually can access the
> sound card inside the session where pulseaudio is not working.

I've read somewhere that using the normal configuration of pulseaudio (no user
is in the audio group, which is the case of my system), pulseaudio will
automatically change the acl of the sound hardware according to the current
active user. I've checked that on my system:

when in desktop(vt7), `getfacl /dev/snd/controlC0` gives no acl permission to
the current user while running the same command in vt2 shows that correct acl
permission is given to the current user.

So yes, this may probably be the real cause of the issue. Is it sure that the
device acl is not controlled by pulseaudio? Can you please help pinpoint which
program is in charge of the device acls?

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