Keyboard Backlight
Until a few days ago I could control my keyboard's backlight using the F5 & F6 keys irrespective of the ambient light of the room I happened to be in. In the same way that I can control the screen's brightness using F1 & F2, and the sound volume using F11 & F12 regardless of the ambient noise of the room I happen to be in.
Now, when I try and adjust the keyboard backlight using F5 & F6, I get the grey box with the icon, but then instead of controlling the backlight I get an O with a / through it.
nb. When the Macbook decides that the room I am in is dark enough, using it's own light sensors, I am still allowed to have the backlight. So it does work, but as of a few days ago it is no longer under my control.
Please would someone let me know how to fix this. BTW I know that there is some software called Lab Tick that apparently gets around this. But on principle I'm not interested in installing 3rd party software, funded by donations, to fix something that should be handled by Apple, who are rather well funded by us.
Kind regards,
Ben
MacBook Pro, Mac OS X (10.5.6), MacBookPro4,1 OSX 10.5.6