Bug#664068: USB MIDI keyboard fails to initialize

[David Banks <amoebae@gmail.com>]

Olivier Matz's solution is working for me.  I did not realize that
this was an interaction with laptop-mode, but indeed the keyboard only
fails when the AC adapter is not plugged in and the laptop is running
on battery.  It works every time when the laptop is plugged into the
AC adapter.  I can confirm that the following line in
/etc/laptop-mode/conf.d/usb-autosuspend.conf makes the keyboard
reliably work in all circumstances:

AUTOSUSPEND_USBID_BLACKLIST="0763:2027"

Thanks Olivier!

Cheers,
-- 
David Banks  <amoebae@gmail.com>