[Ardour-Users] port registration error

Robin Gareus robin at gareus.org
Sun Aug 19 07:20:05 PDT 2012

On 08/18/2012 12:00 PM, Orm Finnendahl wrote:
> Hi,
>  I created a session using jack with the internal soundcard. Trying to
> open it with my external Hammerfall multiface gives me a "port
> registration error". Opening the session with the internal soundcard
> still works. There seem to be name conflicts but I'm at loss, where to
> look for them as it's unspecified, which track/port names trigger this
> error. Can anyone help how to nail down the problem?
> --
> Orm

Hi Orm.

I answered your question on IRC, but you did not reply there.
This smells like you're running out of ports.

I suspect you're using a lot (of tracks/busses) in your session, the
internal card probably has only 2*2 ports while the Hammerfall 24+ and
that makes it exceed the limit.

try running   `jackd --port-max 1024 -d...` or increase them in
qjackctl's setup. - IIRC the default is quite low (128 or 256?).


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