I have the system pref "Automatically illuminate the keyboard in low light" disabled. However, when I wake the computer from sleep and the login prompt appears, the keyboard backlight turns on. Despite the fact that I didn't ask for this, it's actually somewhat useful, so I don't object to that. But, once I log in, the keyboard backlight stays on. AND, to make matters worse, the machine seems to "think" that the backlight is off, because pushing the backlight dimming button (the one shared with F5) doesn't dim the keyboard backlight. Instead, I have to first increase the backlight, then decrease it, in order to disable it.
So, I'm looking for a way either to: 1. ensure that the auto-enabled keyboard backlight self-disables upon login, or 2. completely, 100%, totally disable any auto-enabling of the keyboard backlight (an acceptable alternative to 1, since I don't really need it auto-enabling at login).
Note: an unacceptable solution is one that completely disables the keyboard backlight. I need to be able to invoke it manually when desired.