[LAU] Solution for jackd2 and dbus without X session

Jeremy Jongepier jeremy at autostatic.com
Thu Oct 25 10:59:45 UTC 2012


On 10/25/2012 11:53 AM, Jannis Achstetter wrote:
> On my Raspberry-Pi I use the dummy-driver and then alsa_out to get the
> sound to the onboard sound chip (as posted here:
> http://www.raspberrypi.org/phpBB3/viewtopic.php?p=196500#p196500  and
> here:http://www.raspberrypi.org/phpBB3/viewtopic.php?p=197194#p197194  )
>
> However, I can't get my Edirol/Cakewalk UA-101 to work with the Pi but
> I'm sure it's not related to power. I guess it's the Pi's USB host-chip
> or its driver which seems to have problem with other devices (mostly DVB
> stuff), too. Isochronous transfers (as used by most "professional" USB
> audio interfaces) seem to be pretty hard for the Pi:(
>
> 	Jannis

Hi Jannis,

Yes I've seen those posts and indeed, it seems the Pi has a hard time 
doing isochronous stuff. When I use the -P or -C option of the ALSA 
driver JACK starts without complaining.

Jeremy


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