06-20-2016, 04:12 PM
This can be caused by an EFI CSM configuration problem, depending on your BIOS and EFI version. If you are under CSM the Ps2 to USB emulator may not be present and may or may not be necessary in your specific boot condition, which is different than in OS condition. That is why unplugging and plugging solves the problem, as your OS can find the USB device, but not your EFI CSM in NVRAM. This is of course a likely OEM issue concerning your specific hardware.
https://en.wikipedia.org/wiki/Unified_Ex..._Interface
Trinidad
https://en.wikipedia.org/wiki/Unified_Ex..._Interface
Trinidad
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.