Surface Pro 4 - Screen won't wake from sleep

Here Here!!

None of the items under firmware have exclamation points, yet I still had to hard reboot my device. 4/25/16

????

This is STILL BROKEN!!!

Mine is also Lot #/Date 1601 (swapped for another SP4 that corrupted itself during forced shutdown/reboot at Microsoft Store in Austin on the fateful 2/17).  All of the info reported by CPU-Z on mine is identical to what dkb1898 posted, and what you said you have working (right down to same steppings, BIOS revs, etc.)  Mine has all updates applied, no exclamation marks in Device Manager, and is still almost virgin (default sleep policy w/only a few minor setting changes: no sleep when plugged in, and turning off WiFi updates when sleeping (both boxes unchecked in Settings/System/Power&Sleep/WiFi).)  Whatever's wrong or different in the hardware (if anything is), it takes more than a simple CPU-Z scan to sort out the SP4s that work from the ones that don't. ?

 This is disappointing to be sure.  So it seems definitive that lot number is not a reliable measure to sort the defective units from the 'effective'.  

This must be bad hardware.  Why?  Because my replacement device and several others work perfectly all the time.  I've loaded up my new device with legacy apps and drivers... still no crashing.  That means theres nothing wrong with windows 10 regarding the sleep crash.  On a properly designed device it works.

Ok but whats interesting is that some people who have other laptops from other manufacturers have also occasionally reported this kind of issue.  I bet that microsoft doesn't build these devices uniformly with the same parts from the same manufacturer.  Some shipment of parts is bad and has crept into the supply.  Microsoft engineers can't seem to track it and as a result, some units are passing preliminary tests and being bought by consumers, probably because microsoft is rushing to meet demand and doesn't have the resources of a large manufacturer.

The fault here IS with microsoft because they are not adequately testing devices before selling them to root out the bad ones.  Now they might reply that with a device as complex as this they can't test for every consumer configuration...

But this has been going on for months and the problem is clear.  I say... yes, Microsoft, YES YOU CAN test for this single issue and make sure it doesn't creep into the supply.  

Bring back your device to the store... keep bringing them back until you get a good one.  I know its irritating, but this is one of the best ways to let them know that they can't do this.  Surfaces are expensive to repair, and they lose money on every one that goes back.

4-25-16 This is my second surface pro 4 in 3 weeks and both have the same problem of not waking up after going to sleep.  I used my old laptop to find out about the hard reboot. Good thing I still had it. It seems like after all this time MS should be able to fix this problem. I'm considering turning this unit back in and just buying a plan lap top again. At least with it you can count on it coming on from sleep mode.

Does MS have anything to offer at this point to influence me into keeping this unit after 6 months of knowing about the problem since this blog started.