[alsa-devel] Bug report: Random MIDI output data drop-outs/corruption

Sean M. Pappalardo pegasus at renegadetech.com
Fri Jul 10 16:03:30 CEST 2009

Hello there.

I just wanted to call your attention to a bug report I recently filed,
because I'm not sure I put it in the right place:

In a nutshell, ALSA seems to be dropping or corrupting output MIDI
messages (both "short" and SysEx) at random as evidenced by the devices
not lighting some LEDs or changing modes (sysex) on occasion. The
problem is positively affected, but not completely mitigated, by the use
of a real-time kernel. aseqdump -d shows everything correctly even when
the device response is incorrect.

All details are in that bug report including links to alsa-info output
in the notes.

Thanks for your time. Let me know if I can provide any further information.

Sean M. Pappalardo
"D.J. Pegasus"

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