Evan DeMond wrote: > Just acquired a Edirol UM-2EX, a little USB MIDI adapter with 1 input and 2 > outputs, and I only seem to be able to use one of the outputs. Plugging it > into my Eee PC (Arch Linux with ALSA 1.0.20) creates /dev/midi1, to which I > can read and write with no trouble. > But the second MIDI out is silent - does anyone know how I could open > it, perhaps through the ALSA library, or somehow getting a /dev/midi2, > or otherwise? In the ALSA raw MIDI interface or sequencer interface, both ports show up (see the output of "amidi -l" or "aplaymidi -l"). All ALSA applications will see the second port. /dev/midi* is the OSS interface emulation for applications that do not support ALSA; the second port does not show up as a separate device because the USB driver uses a mechanism for enumerating MIDI ports that supports more than 8 ports per device, which is not supported by OSS. (You could access the second port through /dev/midi1 by opening that device a second time while it's still open.) To get /dev/midi2, load the snd-virmidi driver to create a virtual MIDI device, then connect its sequencer port with the UM-2EX's second port with aconnect. HTH Clemens ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
