Whenever I switch languages from English to another, my Num Lock light turns off, though I still can use it. I'm aware that it's an Ubuntu 14.04 LTS bug. But are there any patches for it?
Numlock 14.04 – Numlock Light Turns Off When Switching Language with Super + Space
14.04numlock
Best Answer
The bug report is here. Egmont Koblinger wrote a patch (see comment #22 of the bug report). I don't switch languages so I didn't test it, but other users have reported that it works.
Download it and rebuild xorg-server using the following steps (as Egmont outlined in his comment):
See also comment #27 of that report by dimitronic for an alternate method, though it's a script, not a patch as you requested. I've copied it below: