Comment 13 for bug 289905

To me, this is the same bug.
I'm using an MX5000 keyboard/mouse combo with the BT 2.0 dongle that came in the package. The keyboard and mouse pair with the dongle instead of the PS3's BT chipset which makes switching between Linux and PS3OS seamless. If you try to use internal BT, I think you end up pairing every time you switch between OSes.

The problem here is that you can install Ubuntu and type about kboot, but as soon as the BT daemon is started in Ubuntu the keyboard becomes useless. Haven't tested the mouse just yet, but since it's pairing with the dongle I don't expect any problems.