It has a limited feature set, but it work well when you are using it. I've been using it even before it forked, and it's added an extra 60-90 mins to my battery life making my battery life comparable to the Windows side.
I'd just like some stuff to activate the GPU in a more automated fashion... and I'd like them to get the HDMI port working without have to mess with sessions and such.
It's a step in the right direction even if it isn't perfect.--
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