Index: libnxt-0.3/lowlevel.c
===================================================================
--- libnxt-0.3.orig/lowlevel.c
+++ libnxt-0.3/lowlevel.c
@@ -93,9 +93,18 @@ nxt_open(nxt_t *nxt)
 {
   char buf[2];
   int ret;
+  char bound_driver_name[20];
 
   nxt->hdl = usb_open(nxt->dev);
 
+  //detach possible kernel driver bound to interface
+  if (usb_get_driver_np(nxt->hdl, 1, bound_driver_name, sizeof(bound_driver_name)) == 0)
+    {
+      if (usb_detach_kernel_driver_np(nxt->hdl, 1) < 0)
+        fprintf(stderr,"Failed to detach the driver %s (or cdc-acm) bound to the USB interface",bound_driver_name);
+      //Let usb_set_configuration() below return an error and handle it
+    }
+
   ret = usb_set_configuration(nxt->hdl, 1);
   if (ret < 0)
     {