I'm installing Ubuntu 13.10 Server (amd64) on a HP Proliant Microserver. I'm using a USB keyboard which works fine until I opt to install Ubuntu and get to the (first) "Select a language" screen. At this point the keyboard becomes unresponsive and the number lock light turns off.
The BIOS is configured to support USB devices in legacy mode (hence I can get past the initial boot screen). Unfortunately the machine does not have a PS/2 port, however I have tried using a range of keyboards to debug this:
- a standard USB keyboard (Microsoft Ergonomic 4000)
- an alternative USB keyboard (G15)
- a PS/2 keyboard using a passive PS/2-USB connector
- and another PS/2 keyboard using an active PS/2-USB connector.
Unfortunately I get the same results with all of these. I note that this has happened to someone else with a wireless keyboard - could this be a case where the installer is not reloading USB devices?