ambient light sensor not working after mountain lion upgrade

[Baadshah]

I just upgraded and even fresh installed mountain lion, but the light sensor on display and backlight keyboard are not reacting on lights on or off. please help

 

[jeremiah239]

I just upgraded and even fresh installed mountain lion, but the light sensor on display and backlight keyboard are not reacting on lights on or off. please help

Yes I have noticed same thing.

 

[jameskohn]

i just upgraded and even fresh installed mountain lion, but the light sensor on display and backlight keyboard are not reacting on lights on or off. Please help

+1

 

[AfzalivE]

Works here after upgrade.

 

[iLog.Genius]

Works fine here, Late-2008 MacBook Pro. Try resetting SMC.

 

[MacGurl111]

Hmm same here..

I'm going to restart and see if that works.

uh.. that didn't work.

 

[dendkmac]

Works fine here after MT Lion upgrade....MB Pro Mid 2009.

 

[MacGurl111]

I resetted SMC
Reboot then did repair disk and waited for a bit played around with some buttons and it worked.

Hope that helps!