====== Ubuntu - Joystick - Troubleshooting - LIBUSB_ERROR_NOT_FOUND ======

===== The Problem =====

A Xbox controller is not working.

  * The xboxdrv tool also throws a LIBUSB_ERROR_NOT_FOUND error.

To reproduce the error:

  * Connect the controller to an USB port.
  * The Xbox button lights start blinking non stop.
  * Type the following command <code bash>sudo xboxdrv</code>

The command throws the following error:

<code bash>
Error couldn’t claim the USB interface: LIBUSB_ERROR_NOT_FOUND
</code>

----

===== The fix =====

Disable the autosuspend feature of the usbcore module.

  * See [[https://www.kernel.org/doc/Documentation/usb/power-management.txt|Power Management for USB]].

Set the **usbcore.autosuspend option** to -1 in the GRUB_COMDLINE_LINUX line in the Grub configuration file /etc/default/grub:

<file bash /etc/default/grub>
GRUB_CMDLINE_LINUX="usbcore.autosuspend=-1"
</file>

----

Update the grub configuration:

<code bash>
sudo update-grub
</code>

----

Restart the computer.

<WRAP info>
**NOTE:**  Once you restart the computer, the Xbox button lights stop blinking.
</WRAP>

----