There is only one keyboard LED indicator - for Caps Lock, and it doesn't display the correct state. The button itself is working though.
See CORE-14154 for debug log. Also seems related to CORE-8229.
Implement our i8042prt initialization routines step by step after the MS DDK example
Installing drivers takes too long on Samsung N150 Plus
On real hardware ps2 keyboard lights get off during ros boot
NUM Lock LED don't turn on when it's activated