[systemd-devel] Preventing automatic seat assignments

[Tanu Kaskinen]

On Wed, 2014-08-27 at 11:47 +0300, Tanu Kaskinen wrote:
> On Tue, 2014-08-26 at 14:00 +0200, Lennart Poettering wrote:
> > On Tue, 26.08.14 12:17, Tanu Kaskinen (tanu.kaskinen at linux.intel.com) wrote:
> > 
> > > Hi,
> > > 
> > > If I want to designate some sound card to be shared between seats,
> > > then I suppose that sound card shouldn't be assigned to any seats.
> > > However, currently /usr/lib/udev/rules.d/71-seat.rules
> > > unconditionally tags all sound cards with the "seat" tag. How should
> > > this be solved?
> > 
> > What's the rationale here actually? PA doesn't really support "sharing"
> > sound cards between multiple seats.
> > 
> > I mean, If this is something generally useful we can see if we can
> > support that in the default rules, but I am not seeing it?
> 
> The use case is a car audio system. There are multiple seats, and each
> seat can have dedicated audio hardware (e.g. headphones), but there's
> also the speaker system that is shared by all seats.
> 
> It's true that PA needs modifications too to support this. We haven't
> yet decided how to implement this, but probably we will run PA in system
> mode for the shared devices only, and user instances for the per-seat
> hardware. The user instances will use the tunnel module to connect to
> the hardware that is managed by the system instance.

Ping?

-- 
Tanu