I bought a SP3 yesterday and already on day 1 I am having "waking up" issues. I have done all of the updates available to make sure I have the most recent firmware.
The problem is repeatable in that the SP3 screen won't wake up if it is not plugged in. The backlight on the typecover lights up, and you can feel the vibration when hitting the windows key, but the screen stays blank. Once I plug the cord in, it will turn right on. I have also seen the soft reset by holdin the power+volume button, which does work, but considering that it happens everytime it is not plugged in, that's not really a viable solution.
I've also seen a solution involving going to Device manger, finding the Marvell Avastar Wireless adapter, going to a Power Management tab and checking an option there (I would post a link, but I don't have enough posts to do this yet!). However, when I look in the Marvell Avastar properities, there is no "power managment tab" to select as described. So I suspect that the solution is too old and out of date.
I'm contemplating taking it into the MS store, but it is not very convenient for me to get there, so any suggestions here would be appreciated. Thanks.