[pulseaudio-discuss] Sharing logged in users instance over TCP better than systemwide daemon?

[Maarten Bosmans]

Tanu,

Thanks for filling in the details. I knew I was missing some things,
but thought just to answer Graeme's questions to get the discussion
going.

Good to know that manually loading module-alsa-card works. Doing that
just never crossed my mind.

Maarten

2011/12/22 Tanu Kaskinen <tanuk at iki.fi>:
> On Wed, 2011-12-21 at 23:24 +0100, Maarten Bosmans wrote:
>> 2011/12/10 Graeme Pietersz <graeme.pietersz at gmail.com>:
>> > Obviously, allowing any user access is not a security issue as that is what I want (it would be good to restrict network access to the microphone though, but its not essential).
>>
>> The best setup I can think of is to run a system-wide daemon on
>> startup with module-native-protocol-tcp loaded and a per-user daemon
>> in the default setup. You should setup both daemon's config files
>> (/etc/pulse/{system,default}.pa respectively) such that instead of
>> running module-udev-detect, you only load a module-alsa-sink (and
>> perhaps a source) for the right soundcard, so that each daemon only
>> has sinks and sources for the card it needs. (thereby also solving the
>> microfone eavesdropping problem)
>
> Good advice. I'd use module-alsa-card instead of module-alsa-sink and
> module-alsa-source, though. That way all profiles that are supported by
> the card will be available, and you don't have to think about the sink
> parameters.
>
> Loading module-alsa-card is simple:
>
>    load-module module-alsa-card device_id=<index or name>
>
> <index or name> is what /proc/asound/card shows you. The index may not
> stay stable across reboots, so using the card name is preferable. I have
> this in /proc/asound/cards:
>
>  0 [Intel          ]: HDA-Intel - HDA Intel
>                      HDA Intel at 0xee400000 irq 47
>
> Here 0 is the card index, and "Intel" is the card name.
>
>> There could be a problem with the dbus bits of pulse, but I think that
>> those are solved in git master.
>
> If you mean refusing to start when the session isn't available, the
> problem (which is already fixed in 1.1) shouldn't affect the system
> mode, and if I understood the setup correctly, the per-user mode will be
> started normally as part of the X session, so the problem won't affect
> the per-user mode either.
>
> --
> Tanu
>
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