Lego NXT brick communication error with libusb

[Hans Petter Selasky]

On Sunday 12 December 2010 23:40:54 Rene Ladan wrote:
> Hi,
> 
> I am writing a port [1] to control the Lego NXT brick with ROS, but when
> I run a test program it fails (permissions for the USB device are 666).
> This is on:
> 

What dmesg is shown? Are other [kernel] drivers hooking into the USB 
interfaces used by your user-land driver?

What is output from usbconfig -d X.Y dump_device_desc dump_curr_config_desc

--HPS