alegregoriev, Thank you very much for joining the Intel® NUC communities.
In regard to your comments above, there are no reports or documents stating there is a known issue with the NUC. In this case in order to try to f ix this problem we can try a BIOS update to the latest version:
.BIO file needed 0045:
We can also re-install the drivers below:
Another option will be to use start up repair option on the NUC, please enter “recovery options” on the search bar, the choose “restart now” under the “Advanced Startup” tab, then select “Troubleshoot” then “Advanced Options” and then “Startup Repair”
Could you please explain what do you mean with D3 low power, is that a setting of the monitor?
If you set the BIOS to default values, is the problem the same?
Which video port are you using?
Do you have the option to use a different video port on the NUC?
What is the memory RAM model that you are using?
Please let me know the results of trying the steps above.
Any further questions, please let me know.
The BIOS and graphics driver all have been updated to the latest version. I'm using it with 4K monitor on HDMI 2.0.
About S3, S4, S5, D3:
S-states are system power states (in Windows world, at least). D-states are device power states.
D0 is fully functional device state, on full power.
D3 is powered off state. D3cold is when all power is off, and D3hot is when device is put to low power, either on main (VMAIN) or on auxiliary power supply (VAUX). D3hot allows for system wakeup.
D1 and D2 are intermediate reduced power states. Rarely supported.
S0 is fully powered state.
S5 is fully powered off (except for standby power or VAUX). In S5, state of the OS is not preserved.
S4 is hibernation. The system is powered off (possibly with VAUX to some devices), RAM is also powered off, but OS state is preserved on a disk. A variant of it is Windows 10 fast start shutdown.
S3 is sleep state. The system is partially powered on. RAM is still powered on and its state is not lost. CPU may be powered off completely. VMAIN can be off, but VAUX needs to be on to keep RAM contents. A variant of S3 is hybrid sleep, when RAM state is also preserved in hiberfile.sys, to protect against unexpected power loss.
S1 and S2 are placeholders for intermediate reduced power states, but they're not used.
The problem we're talking about is when the graphics controller is in D3hot. Windows will put it in this state when the display is turned off because of user inactivity timeout. Also, the graphics controller will be in D3hot state when the system is in S3. The problem is pretty easy to reproduce in a few tries, and I think you should file a bug with the driver developers. System config report is coming.
alegregoriev, Thank you very much for letting us know that information, we really appreciate you took the time to clarify that.
In this case we will try to replicate this scenario in our lab, based on that, could you please provide the specific steps that you do in order for us to apply them and make sure we are following the same procedure that you performed?
Any questions, please let me know.