FIX: Content Adaptive Backlight
I've seen a few threads/comments here about the flickering/adjusting of the backlight level at lower (less than 50%) brightness levels even though auto-brightness was off. As was suspected, it's just due to a content adaptive backlight module. It can be shut off by just running the CABLPreferences activity of the com.qualcomm.cabl app. It also looks like there is a "quality" setting in there to play with that just varies the aggressiveness of the effect.
If you don't know how to launch an activity, you can do the following:
Via Terminal on your phone:
adb shell "am start -a android.intent.action.MAIN -n com.qualcomm.cabl/com.qualcomm.cabl.CABLPreferences"
am start -a android.intent.action.MAIN -n com.qualcomm.cabl/com.qualcomm.cabl.CABLPreferences
I haven't done any more checking, but I'm guessing this is just a flag that could be set in sys/devices/blah... by init.d script on boot as well.
If you prefer a gui, there are plenty of launchers out there that can select an activity to start. I actually had it set up as a long-press pie on LMT while I was playing with it.
It seems (on my phone, at least), that the app wasn't as good at turning it back on, but you can just clear the app data/cache on "Content Adaptive Backlight Settings" in application manager, reboot, and you'll be back to stock behavior.
Sorry I didn't post this sooner. I've been too busy playing with the G2!