Install libbluetooth2 package.
Put the slate into discoverable mode (press black button underneath).
As admin, open a terminal, enter hidd --connect=XX:XX:XX:XX:XX:XX where the X's represent the bdaddress of your slate.
If you don't know what the address is, enter hcitool scan in a terminal.
It should then connect. If the first go does not work, try connecting it again.