I’ve just put the latest SMC update on my MacBook with Retina Display yesterday. This update fixes “rare issues” when the battery goes to less than 1%. Well, this occurrence may be rare on a computer-to-computer basis, but it happened every single time with the machine I’m using now. As below, using the awesome MenuMeters to monitor the 4 cores:
It’s ironic how blurry this picture is. Note the red-lined battery next to my crude redaction. This snap was made immediately after opening the case, with the power cord in, following a long discharge under sleep conditions. Usually I would use “Grab” to get a screenshot. But you need some processor resources for that…
It’s probably too much to ask that battery life in general improves (it’s the worst tradeoff of the Retina Display, understandable and I accept it) but I was very glad to see that the 2-minute-hang upon wake after a full discharge has gone away! To test it, I unplugged the power and waited for a shutdown. I’ll have to try more conditions, but immediately that the screen went off, I plugged in the power cord, and within a second or two, got back to work with normal processor load (~15% across all cores).
Why did it take so long to address this problem, I wonder?