Which one fails, sleep or hibernate?

Sleep dumps the system state to RAM and suspends whatever hardware possible. Upon resuming everything is already in RAM.

Hibernation dumps the system state to a file on your disk drive and then powers off the computer. When you power back on the OS reads the file back into RAM.

pegnose
 
Like the title says my rig often keeps rebooting if I send it to sleep or shut it down right after gaming. If I wait a couple of minutes, it usually doesn't.

RE:  reboots on shutdown/hibernate after gaming
 
OS ?
 
Graphics card OC software ?
 
Which sleep states are your BIOS set to use ?
 
How is your system set to wake ?
 
What Drive(s) do you have OS & Games on ?
 
What background software do you have, that may be scanning files after gaming or clearing cache  ?
 
 

Simple solution is to not use hibernation.  You are one of the only people I know that use it.  The main issue with hibernation is that SSDs (to include M.2 variants) have problems when utilizing hibernation and the associated power states.  Use sleep mode if anything at all, and disable Hibernation in the Power Management settings.

pegnose
...
I haven't checked whether disabling SLI or taking out one card does remove the issue. But then, that is not an option. ;)
Also, the issue is not that reliable, so single tests might not be that helpful.
...

I was just wondering if the issue is with one card or the other - and maybe by just disabling SLI and then possibly using one card at a time might show the issue following a specific card.  Also the troubleshooting thread might allow you to identify what is happening and why (well, at least what component you might need to RMA).
 
I agree you sure should able to enjoy the SLI performance you've paid for!   This is the first time since I had 2 285 GTX's that I have not had a SLI setup. 

Sajin

pegnose
Is that a common phenomenon?

Nope.

You received a star for "Nope"??  Wow, EVGA's standards have really gone down...lol

I don't know if this helps but I have 2 Z87 systems that fail Fast Startup and Hibernation in Windows 8, 8.1 & 10.

I left a extremely detailed bug report with Microsoft and contacted ASUS and Asrock (makers of the motherboards in those two systems).

This was 3 years ago and Hibernation is still unreliable. I don't know if the bug carried over to Skylake but it wouldn't surprise me if it did.

The best part is Hibernation works in Windows 7, macOS and Linux. :p

Edit: Error codes in event viewer were 0xC0000001 and 0xC0000005

pegnose
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EDIT: And I'm not sure I would go through the trouble of RMAing anything if letting my system cool down also does the trick.

I think I'd be worried that something has an issue that may get worse or cause other problems (that would be MY luck).  If it ends up being one of the video cards I would personally RMA it since EVGA is all about making sure their components are fully supported - not to mention you COULD arrange for cross-shipment if you can't get by with just one of them-thar 1080 FTW's!!!  Heck - my 2 980 GTX SC's are still under warranty (until later this year) while they gather dust in their boxes on a shelf. 

Not a hibernation fan here either. Try not setting it up that way and just use sleep. The question is how much power are you saving along with how much time are you saving waking up from hibernation as opposed to just cold booting from a shut down PC? Maybe 10 seconds I figure?

rludwic
Not a hibernation fan here either. Try not setting it up that way and just use sleep. The question is how much power are you saving along with how much time are you saving waking up from hibernation as opposed to just cold booting from a shut down PC? Maybe 10 seconds I figure?

I find that I can go days and days without sitting down at my PC at home (I usually just use an Android tablet to check email and such).  I prefer to shutdown completely.  The only drawback for me is the X99 chipset seems to need a gawd-awful amount of time to load the bios, then the built-in raid, then finally Windows.  I gotta admit that if I do put it to sleep-I can press the space bar and be at a desk top in just a few seconds.  But I really don't do it often enough for me to need to have it hibernate or sleep.  The amount of power I was drawing dropped when I went from two 980GTX SC's to one 1080 FTW.
 
Hopefully I'll do better research for my next motherboard/CPU upgrade; the X99 motherboards and the 2011-v3 CPU's were so expensive.  Of course I'm complaining about the price of those but have no problem dropping about the same on one video card!

Guys, let me first say again: thank you for your valuable comments.
 
@rludwic: those watts are in the lower single digit area.
 
You might not consider it much, but at the end of the day it is just not necessary to burn them. Not money-wise and not ecology-wise. There is simply no need to have a device consume power if it is currently not needed to. Of course, if it is possible within considerable effort. And deciding for using hibernation instead of sleep and accepting the slightly longer waiting times is well within considerable effort for me. Particularly if it had worked flawlessly before. But I am speaking solely of me, not you or anybody else. You might consider me silly, and I am perfectly fine with that. (Actually, I get that a lot. ;) I am the guy turning off the Wifi router at night and when I go to work. Ok, those are rather 10 Watts, but it is the same thing. Why burn it if all you have to do is push one tiny button? A no-brainer for me.
 
But I want to say something else, too. I really like solving problems. And I like the way I do things, because I often put some thought into it. Taken together, I have the motivation for posting an issue in a forum and discussing in with people (I like that, too). I highly welcome any constructive comments on them. However, I see no real point in comments telling the OP to change his/her behavior or goals in order to remedy the issue altogether. That is like the old joke where a guy goes to the doctor and says "It hurts if I do this." and the doctor says "Easy, don't do it!". While this is funny in a joke, it is usually not helpful in reality. Because the OP wants/likes or sometimes even needs to do things in a particular way.
 
So, I try to get rid of a thing that bugs me for quite a while now, and that I had never encountered with any rig before. And most importantly, I want to find out why it happens in the first place! Please just let me, ok? :)
 
Btw, the power a display consumes in stand-by is not necessarily just the power it takes to have the little red led glowing. My gaming display still consumes ~15 Watts (!) if I switch it off with the power button on the front. And then there is no led on. It is only really off if I flip the switch on the back.

ipkha

pegnose
Like the title says my rig often keeps rebooting if I send it to sleep or shut it down right after gaming. If I wait a couple of minutes, it usually doesn't. I strongly believe this was not the case with the Asus GTX 980 Ti I had before. Along with that transition nothing else really changed in my rig.
 
Is that a common phenomenon?

After reading most of the thread, I can tell you that this type of problem is difficult to diagnose. Hibernate and sleep issues are usually driver related. Devices need to save their state and then resume it quickly. When you exit an intensive program such as a Game there is a lot going on with the system. The graphics card is obviously a big part of this. I'd say the shader cache might be your main culprit, but it could be anything. One of your devices is saving a bad state and crashing the system when it tries to load it back up.
Have you checked your event viewer for clues as to which device it might be? Are you getting any memory dumps?

 
Thanks, ipkha! As I mentioned before, there is nothing in the logs, unfortunately.
 
And I might not have described it to its full extent. The system goes down perfectly. It stays off for like 5-7 s. And then it boots up again. It actually reaches hibernation with all components being turned off - as far as I can see.
 
I know situations where the system comes up again immediately. But this is not one of those.

Thanks, I did.