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 ** Attachment added: "dmesg" http://launchpadlibrarian.net/20835300/dmesg.txt -- Usb keyboard doesn't work at log on https://bugs.launchpad.net/bugs/82368 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs