[Ardour-Users] port registration error

John Rigg au2 at jrigg.co.uk
Sun Aug 19 09:29:47 PDT 2012

On Sun, Aug 19, 2012 at 04:20:05PM +0200, Robin Gareus wrote:
> 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?).

Ardour 2.8.x (if that's what you're using) sometimes runs out of
ports when it shouldn't. I suspect it forgets to free disconnected
ports. Shutting down Ardour and restarting it fixes it, if that's
what's happening here.


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