Comment 37 for bug 82368

I've just developed a very similar bug on my xubuntu machine.
I'm using a Logitech diNovo and a Microsoft IntelliMouse

When I Load into xfce for login then i have no use of the keyboard or mouse, however the optical mouse is lit and the caps lock works.

If I press Print Screen (i found this out through the usual bashing keys with rage when you can't log into your computer and have a deadline to meet) the display flashes and everything works as normal.

If it helps you to recreate the bug, immediately before the bug arrived I'd used 'sudo update-rc.d -f gdm remove' in order to prove that ubuntu can be booted directly to a shell. I then reset my machine and then used 'sudo update-rc.d -f gdm defaults' to restore xfce. If I were a betting man then I'd guess this caused the fault.

I'm attaching my dmesg, i'll follow with lsusb.txt