[LAU] JACK MIDI -X seq annoyance

Peter Nelson peter at fuzzle.org
Fri Dec 25 04:01:53 EST 2009


On Thu, 2009-12-24 at 20:36 -0800, Ken Restivo wrote:
> This is driving me nuts.
> 
> When I use the "-X seq" argument to JACK with JACK MIDI, it makes a bunch of bogus connections for EVERY synth, that get reported by ALSA via aconnect -lio,x and make it unreadable. i.e.
> 
>       Connecting To: 128:0[real:0]
>        Connecting To: 128:0[real:0]
>        Connecting To: 128:0[real:0]
>        Connecting To: 128:0[real:0]
> 
> .... spam spam spam spam..... on every port, of every synth. On my setup, this line gets repeated 28 times.
> 
> We've got 128:0, we've got [real:0], we've got 128:0 and [real:0], we've got [real:0] and 128:0, we got.....
> 
> But I don't LIKE 128:0[real:0]!
> 
> In fact, there isn't any such synth! It doesn't exist at all, according to aconnect. I'm listing the available ALSA MIDI devices, and... other than 0: System, the synths start at 130. There is no 128. It is connected to nowhere. is a ghost device?
> 
> What's up with this? Is there a way to make it stop?

128:0 will in fact be jackd, which needs the connections so that it can
expose their events to the jack midi world...

You could make it stop by not using -X seq, which probably isn't very
useful.




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