Lilliput Um-70 Mini Usb and Ubuntu 12.04 on BeagleBone

HI, I have Lilliput Um-70 connected to my BeagleBone via USB, works perfect, but the only way to start it is to connect it to USB and rebooting the system. How to start it without reboot?
Is there any way to start it by just turning it on,while connected? Now when I turned it on without rebooting I get black screen.
Thanks
Robert