No keyboard or mouse after X starts

[Daniel Lintott <daniel@serverb.co.uk>]

Hi,

NB: I'm not subscribed on the list so please CC me

II have just installed Jessie after using Wheezy for many months.

The install completes fine but when X/gdm3 starts neither the keyboard 
or mouse are functional.

If I boot into the recovery console, the keyboard works fine and both 
are present in lsusb.

I have also tried using Cinnamon and lightdm, but this had the exact 
same problem.

Any ideas?

Cheers,

Daniel