On , thijs van severen &lt;thijsvanseveren@gmail.com&gt; wrote:<br />&gt; any ideas ?<br /><br />Yup! Tell jack to not use ALSA raw midi, use SEQ instead.<br />QJackCtl-&gt;Setup dialog, bottom left is &quot;MIDI Driver&quot;, play with that..?<br /><br />-Harry