Comment 23 for bug 1321750

For now I think the best solution is to use Caffeine 2.6 for Ubuntu 14.04.
You can get it here :

https://launchpad.net/~caffeine-developers/+archive/caffeine-dev/+files/caffeine_2.6%2B555~ubuntu14.04.1_all.deb

It as the panel indicator with manual toggle.

I respect the decision of the dev although I think this is a very very bad idea. Why make a software that works well then cripple it ???
I hope someone will fork it because manual toggle is almost as important as auto detection...