Multi-user combi of arts, jackd, dmix ?!

[JeroenV]

Ok, I thought to be smart and get the best of 3 worlds:
1) use jackd for ardour (and possibly xmms through xmms-jack)
2) use dmix for desktop-sounds (licq)
3) use arts for my girlfriend's KDE session started from gdmflexi

The reason for wanting this is that it provides maximum flexibility without reconfiguring for any of the 3 uses.
I have an ens1371 card and 2.6.1-kernel alsa, which has 2 DACs, DAC1 (hw:0,0) and DAC2 (hw:0,1).

My idea is this setup:
1) run jackd on hw:0,0
2) define a dmix'ed alsa pcm slave that mixes everything directed to alsa device dmixed to hw:0,1
3) run artsd on the dmixed device
4) be able to use aplay -d dmixed (i.e. it is mixed together with the output of artsd)

So far I got everything working, except that artsd keeps silent, although the debug-output (artsplay -l0 ....) shows that everything should work fine.

This is my asound.conf

Code: Select all

pcm.dsp0 {
	type hw
	card 0
	device 0
}

pcm.!default {
	type plug
	slave.pcm "dmixer"
}

pcm.dmixer  {
	type dmix
	ipc_key 1024
	ipc_key_add_uid true
	slave {
		pcm {
			type hw
			card 0
			device 1
		}
		period_time 0
		period_size 1024
		buffer_size 8192
		periods 128
		format S16_LE
		rate 44100
	}
	bindings {
		0 0
		1 1
	}
}

ctl.card0 {
	type hw
	card 0
}

Any ideas how to get artsd working

Arternatively I was considering to define an alsa-plugin for jackd, as explained on http://www.alsa-project.org/alsa-doc/do ... le=ens1371
,but then I'd need to have the jackd sockets available to all users... Is there any way to achieve this

[samppa]

I was searching for info about making artsd work with dmix and found out this Alsa wiki page:

http://alsa.opensrc.org/index.php?page=DmixPlugin

On bottom half of the page there is a hack to make artsd work with dmix, but it looks too much a hack for my liking, so I haven't tried it yet. It would be nice to hear experiences from other people who tried it though.

According to kde developers chances to make artsd work with dmix are very small. It would be nice if kde could use dmix without running artsd at all, or if artsd had a passthrough feature so that it would just pass everything to alsa dmix plugin.

If someone gets artsd working with the dmix plugin, let us hear

[samppa]

There is also a bug report of this problem of not being able to use dmix device for artsd:

http://bugs.kde.org/show_bug.cgi?id=70802

If you want to have this working, go show it your votes

[JeroenV]

Thanks,

I voted for the bug indeed, I share your thoughts about the dirty hack too. My girlfriend is not so much in dire need for sound, and I myself don't use KDE anyway, so I'll leave it at that for now...