AFAIK the
Oxygen8 does not behave as a standard usb midi device, it uses a
"Midiman protocol" instead, so the standard drivers don't know what to do
with it. If you connect it and do an lsusb -v you don't see much...
Ok if the Edirol keyboards support standard MIDI then there shouldn't be any
problems using them under Linux, but since USB has a much bigger bandwidth
than serial MIDI, I that the timing for notes that belong to large chords is
more precise. Can someone confirm this ?
Not really, unless you are spreading those chords on several separate midi
outputs. If it just one, then it determines the bandwidth available.
Getting things faster to the interface will do nothing because it still
has to send the bytes to the external synth at the same old slow 31250
baud speed.
-- Fernando