Comment 5 for bug 1881015

Here is some more information that I collected.

I tried toggling fn-lock while at different stages of booting.

* In the grub menu, the light does not toggle.
* If I choose to boot windows, then while windows is booting, the light does not toggle. (ie, during the "swirling dots" screen.)
* Once windows gets to the login screen, the light does toggle. This implies the light only works once windows has loaded a driver or similar.
* If I instead choose to boot Ubuntu, then the light does not toggle. Not during boot, at the login screen, or after logged in.
* If I enter the BIOS setup, then the light does toggle there. If I exit and boot into Ubuntu then the light no longer toggles.

I strongly suspect there is at least some OS involvement with the fn-lock LED working.