iPad screen is going dark
The display on my iPad Air (first gen) has suddenly become very dim. At max brightness, it's only about half as bright as my older iPad 3 (the last iPad to use the 30 pin connector).
This pic was taken outside at a park. It's daytime but overcast and I'm in an exercise area that is covered by a canopy. It's almost impossible to see even at maximum brightness.
I've tried a full backup and restore, with no change. That makes this iPad pretty much useless except in a darkened room.
Is there anything else I can do to try to "reset" the iPad's display settings?
[Re-Titled by Moderator]
iPad (4th gen) Wi-Fi, iOS 8.1