Backlight Stopped Working on Auto-Help

[MatthewStorm]

I bought my MBA yesterday. I played around with it a little in a dark room to a light room. I loved the fact how the keyboard would illuminate automatically. Very cool. Well, today I installed the Firmware update that was available. Now my backlight does not work AT ALL except manually! I have to press F6 to make it illuminate in a completely dark room. WTF? After every reboot the illumination is set to it's lowest and I have to reset it again. Can someone please explain what's going on. I'm a little pissed at the moment. I am not a newbie. I know what I'm doing. Did the firmware update screw up everything? Please help. Thanks.

**UPDATE**
If I deselect "Illuminate Keyboard" in Prefs then wait a few secs and then reselect it the lights come back on (I'm in a dark room). But if I sleep it or shut down I have to redo this all over again. This is effed up! Any solutions?

[glitch44]

have you searched all the other threads on keyboard illumination recalibration / the Lab Tick app?

[MatthewStorm]

I updated to 10.5.3 and lo and behold it is somehow working normal again. Sheesh!

[eggersj]

I updated to 10.5.3 and lo and behold it is somehow working normal again. Sheesh!

Mine refuses to work if the battery is low... Was yours charged?

[MatthewStorm]

Yep, fully charged. It's weird.

[TheMadBrewer]

I just noticed that my backlight isn't working. When I try f5/f6 the icon shows on the screen but with a "no" (slashed circle) below it. But Lab Tick does work fine. Keyboard setting "Illuminate keyboard" is checked.

May not be related but I just installed the OSX update. But I don't know for sure that is was working before. Don't use my MBA in the dark much :)

[nyzballa12]

Try it with a older version and a full battery to see what could change.