Lost keyboard lights on login screen

HI did u get this working as I'm having same issue

Dutch60,

Any chance you have FileVault turned on? I found that if I turn on FileVault then at my Login screen from boot doesn't have the backlit keyboard nor can I adjust the brightness of my screen or keyboard backlit. The moment I turn off FileVault I can then adjust those things and everything works fine.

You can see if you have FileVault turned on by going to System Preferences -> Security & Privacy -> FileVault (Tab)

Also I think that its important that we let Apple know this is going on so make sure you send them feedback on this. I mean if you want to that is. https://www.apple.com/feedback/macosx.html

Hope that helps,

Weston

thank you this worked for me,new to macs so was struggling with this minor but frustrating problem

Hi

I believe this is a bug as I've use 10.8.x and 10.9.x with FileVault turn ON but the Keyboard light still work at LOGIN.

The problem started after I upgrade to 10.10.x.

I have this problem as well on both MBA 2013 & MBA 2015. I noticed it in yosemite, and still having the same issue in el capitan (10.11.2). File vault is enabled, and backlit keyboard will only activate only AFTER login. I submitted bug to apple but I see this has been reported since mac OS 10.10. Frustrating to see this still has not been fixed.