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I am trying to pair my retropie with two 8BITDO SFC30 gamepads.

To do so, I start them in the appropriate mode (pressing START+B on one and START+RIGHT+B on the other). I then connect them with this script:

sudo bluez-test-device remove $1
sudo bluez-simple-agent hci0 $1 -c DisplayYesNo
sudo bluez-test-device trusted $1 yes
sudo bluez-test-input connect $1

I am confident the above steps are correct, but I get a dbus exception. For example:

pi@retropie ~ $ sudo ./connect.sh 01:02:03:04:05:06 
Release
New device (/org/bluez/2270/hci0/dev_01_02_03_04_05_06)
Traceback (most recent call last):
  File "/usr/bin/bluez-test-input", line 40, in <module>
    input.Connect()
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.UnknownMethod: Method "Connect" with signature "" on interface "org.bluez.Input" doesn't exist

Any info I could find on the interwebs is useless. I strongly suspect it's a bug, but I don't know what it means.

What does this error mean? How do I debug it?

  • 1
    I went around the problem, see here. however an answer to this would still be useful. – Sklivvz Dec 26 '15 at 18:38

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