Christoph Eckert wrote: > > I'll do some tests the next days. Maybe I'll wait because I > > just ordered a new USB-MIDI-Patchbay and I'd like to do the > > tests with it, so I can ensure it does not depend on my > > current Edirol UM-1S. > > Rrrrrr. > > I wanted to do some test cases, but of course everything > behaved as *un*expected: it simply worked ;-) . > > All SysEx events have been properly received, even after a > reboot, even with plugged in devices during boot time and > even with not plugged in devices. > > If it were a kernel bug, it will be difficult to find if it > only happens in certain conditions. I've done some further testing, and it seems it is not a kernel bug but an issue with Edirol devices. Apparently, they haven't been designed for drivers that can be unloaded and reloaded. I'll see if I can change the driver to explicitly reset the device when loading. Clemens