Dear forum
Got a presonus Itwo coupled between Yamaha PSR-510 and Computer. It is a linux computer. The Itwo seems to have problems receiving the exact MIDI messages. Now and then it receives (or maybe understands) a 'note on' followed by the correct 2 bytes. It will not receive a 'note off' after that. Sometimes it receives only the 'note off' signal (3 bytes) It always produces the 1st byte (HEX 90) whenever I press or release a key, but not followed by the 2 bytes you'd expect after that. The other way around works fine, I can play a .mid file throught the presonus Itwo and my keyboard. This shows a correct DIN cable.
The presonus Itwo has a MIDI input and output, I tried several different DIN cables I've got. short ones, longer ones. Always the same result. I also have a cheap China midi-usb converter (had to upgrade it with an optical chip, but that works fine now), and with that I do receive all the right signals you would expect.
PC running Fedora 35, I monitor with amidi.
Someone else having the same issues? I read at the presonus forum others have, but I am not allowed to react to that post at the presonus forum.
What could be the issue? Could the signal from the keyboard be too weak?
Got a presonus Itwo coupled between Yamaha PSR-510 and Computer. It is a linux computer. The Itwo seems to have problems receiving the exact MIDI messages. Now and then it receives (or maybe understands) a 'note on' followed by the correct 2 bytes. It will not receive a 'note off' after that. Sometimes it receives only the 'note off' signal (3 bytes) It always produces the 1st byte (HEX 90) whenever I press or release a key, but not followed by the 2 bytes you'd expect after that. The other way around works fine, I can play a .mid file throught the presonus Itwo and my keyboard. This shows a correct DIN cable.
The presonus Itwo has a MIDI input and output, I tried several different DIN cables I've got. short ones, longer ones. Always the same result. I also have a cheap China midi-usb converter (had to upgrade it with an optical chip, but that works fine now), and with that I do receive all the right signals you would expect.
PC running Fedora 35, I monitor with amidi.
Someone else having the same issues? I read at the presonus forum others have, but I am not allowed to react to that post at the presonus forum.
What could be the issue? Could the signal from the keyboard be too weak?