For what it's worth, I've had this problem with all my laptops, the latest being a Dell Studio 15.
Considering the fast boot and shutdown of the Yoga 3, I just shut down if I'll be away for more than an hour. Mine seems to lose about 3% power while it's in Sleep mode, on average, but sometimes this goes up to 10%. I am guessing it's some program updating, checking in, whatever.
No machine I've ever bought (as opposed to those I've built) have ever lived up to the "ideal" specs. :smileyhappy:
Best of luck in your quest,
NG
wrote:
Bananaman,
thanks for the response. I still don't believe this is normal behavior. This is the first laptop I've ever had with this issue, and the real problem is it's entirely unpredictable. Shutting the laptop down is not a solution either, since I often have lots of work or programs open that I don't want to have to restore every time. Thing is I don't think the laptop is actually waking, but it's more like it has excessive battery drain in sleep mode.
I've put it to sleep and it's fine for a couple days with only a few % battery drain, but other times, such as last night, I put the system to sleep late at night, & it's dead by morning. This basically renders sleep mode useless. I put it sleep and there's no indication that it's awake or using battery - no fan, no screen on, nothing, and the illuminated sleep button remains in the blinking sleep mode the entire time. Checking the logs doesn't show it waking in the middle of the night by some program or process. In "lenovo settings" I did find "always on USB," which settings even recommends turning off since it may drain battery, but I even disabled that before having the issue again.
I haven't yet tried disabling automatic updates - not that it's ever been a problem on any other computer of mine. I still think there's either some major driver issue by lenovo, or hopefully there's no major sleep power draw issue with the core m processors.
I'll try disabling windows updates, and if that doesn't work, then a full restore, I guess.