====== HP Laptop Keyboard Not Working At LM Boot Start ======
[[https://forums.linuxmint.com/viewtopic.php?p=2108184#p2108184|Original article]] is for Linux Mint, but this affects Ubuntu as well.
This disables the caps lock indicator.
sudo vi /etc/default/grub
Update the GRUB command line to include the i8042 entry, e.g.:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.dumbkbd=1"
Save the file, then run ''sudo update-grub'' and reboot.