SurfaceBook Crashes/Shutdowns During Sleep

To recap, because this is a long thread:

You close the lid on your SB at night so that it goes to sleep, and when you open it in the morning the machine reboots from scratch, as if from power-off. It has crashed overnight and lost all your open windows, but there is no crash dump and nothing in the event log to explain the cause, just a message on start-up that says "The previous system shutdown at <time> was unexpected". It's as if all power was terminated abruptly so that the system had no time to react.

Presumably, you don't have this problem or you'd recognize it?

"crash" in this case means that the system is literally shutting down without being told to do so.  And the 2 hour thing isn't set in stone -- this time frame can be changed and even totally disabled (so the system only sleeps and never hibernates). One should not assume that everyone has left the default settings as they are ...

I've had a different issue since getting the new nvidia driver on 5/20 (which installed on my system -- device manager shows the new version), but Windows Update reports that the install failed. My SB has been failing to wake from sleep, but it isn't powered off. It is usually warm when this happens, and requires me to hold the power button for a good 20 seconds to force the system to power off and then do a cold boot. This is, of course, in addition to the ongoing sleep-crash/shutdown problem.

I just installed today's (5/24) firmware updates, so I'm going to be watching my SB for the next week or so to see if the sleep-crash issue has finally been addressed. I really hope so.

This isn't sleep,  this is hibernate. Sleep is the first two hours after closing the cover. Then the machine hibernates after that.  Lots of folks here interchange the two words sleep and hibernate. they are in fact different. 

Also, when people say "crash"  that means many things to most people.  I would like more info on the crash. 

The one thing I would disable is the wireless network card while sleeping.  It will consume the most power anyway.

I also have experienced this problem. I was able to put everything to hibernate which helped but I still experienced crashes on start up. The issues became worse with the NVidia update. 

I have returned my Surface Book. I hope Microsoft release either a batch where this is fixed or the next generation proves to be better. 

After this experience I believe Microsoft doesn't run their own products in house. The rest of the product is great but how they missed this big problem when getting so many small things right is mind boggling.

Unfortunately I can confirm this does not solve the problem on my Surface Book. It still crashes randomly in Sleep. Sometimes it will go for a day or two, other times it will crash in a few hours.