Musescore MIDI out in Ubuntu Studio 10.04?

[Pablo Fernández]

Hi Angel,

El 13/01/11 13:16, Angel de Vicente escribió:
> Hi,
>
> I'm not sure I will ever need it, but getting MIDI stuff out of
> Musescore seems nice, and I was trying to get it connected to a
> Virtual MIDI keyboard (as in
> http://www.youtube.com/watch?v=f_jlej7cnQA), but I cannot get it to work.
>
> I have Ubuntu Studio 10.04, VMPK version 0.3.0, and Musescore 0.9.6.2
> (revision 3400). What I did:
>
> * In Musescore I go to preferences->I/O and select "Use JACK MIDI
> output". Quit MuseScore (screenshot at:
> http://www.flickr.com/photos/angelv/5351272965/in/set-72157625688106445/)
>
> * Start JACK
>
> * Start VMPK
>
> * Start MUSESCORE
>
> In the Jack Audio Connection Kit "Connections" view, I see "Mscore1"
> in the MIDI tab as readable client, but VMPK Input only shows in the
> ALSA tab, so I cannot connect them. (screenshot at:
> http://www.flickr.com/photos/angelv/5351885762/in/set-72157625688106445/)
>
> Does somebody know if I'm doing something wrong (or forgetting to do
> some extra step)?.
You need a bridge between alsa midi and jack midi.  a2jmidid will do the
trick. The connect jack midi out from mscore to a2j:vmpk:in

Tip: To get a2jmidid up and running every time you start jack (it
doesn't hurt when you don't need it), in qjackctl, execute after server
start: "a2jmidid &" (add -e option to a2jmidid if you have a real midi
keyboard).

>
>
> By the way, in case I try to connect them directly with Patchage, I
> get the message "Cannot connect Jack audio port to Alsa Midi port!",
> so is it considering the "mscore-midi-1" as a Jack audio port???
> (screenshot at:
> http://www.flickr.com/photos/angelv/5351273007/in/set-72157625688106445/)
This seems like a bug in your patchage version, which is very old. I
strongly recommend you update it. This is a PPA with a much more recent
version of patchage for lucid:

 https://launchpad.net/~philip5/+archive/extra

Cheers!

Pablo