[Bugme-new] [Bug 8874] New: USB midi interface unusable

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=8874

           Summary: USB midi interface unusable
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.18 and on
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Sound(ALSA)
        AssignedTo: perex at perex.cz
        ReportedBy: dgriffi at cs.csubak.edu


Most recent kernel where this bug did not occur: 2.6.17-10
Distribution: Ubuntu, Fedora, Dynebolic, Gentoo
Hardware Environment: IBM Thinkpad T42, desktop with Ensoniq AudioPCI ES1371,
MOTU Fastlane USB midi interface
Software Environment: awmidi, rosegarden
Problem Description:
A midi interface is recognized by the system.  awmidi(1), rosegarden(1) and
other midi-using programs report its presence, but cannot receive or send data
through it.  

Steps to reproduce:
1) Hook up a MIDI keyboard to the joystick/MIDI port or a USB MIDI adapter such
as a MOTU Fastlane.  This particular USB MIDI adapter does not require its
firmware to be uploaded when it's plugged in.

2)
$ amidi -l
Dir Device    Name
IO  hw:0,0    ES1371
IO hw:1,0,0  Fastlane MIDI A
IO hw:1,0,1  Fastlane MIDI B

This shows available MIDI ports.  ES1371 appears on the joystick port. 
Curiously, with kernels 2.6.17 and prior, the "Dir" column is missing.

3)
$ amidi -d -p hw:1,0,0

Now press some keys on the MIDI keyboard.  If the kernel is 2.6.18 or higher,
nothing will be output.  If the kernel is 2.6.17 or earlier, hex numbers will
be printed for each keypress.


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