All windows move to main monitor after waking from sleep

[PRain1]

I have a Dell XPS 15 with a HD Graphics 530 and driver 20.19.15.4454

I have an external monitor connected to it by HDMI at the same 1920x1080 resolution as the laptop builtin. I have set them up for mulitple display in extended mode using the external monitor as the main monitor. About half the time when I have to wake the displays from sleep during the day I

will find all my windows have moved to the main (external) monitor. It is 100% after returning to my machine from overnight. The laptop

itself is never going to sleep as it is always plugged into power.

Is there anyway to prevent this beyond just setting power settings to never put the monitors to sleep?

[idata]

This issue is known to occur (AFAIK) because of how Windows and the Intel drivers interact. I have this issue on both of the NUC platforms that I own. I have ~NOT~ seen it happen with external GPU's only with Intel's IGP. (This isn't a definitive test, just an observation.)

The MOST annoying part is that not only are all windows moved to the main display, but that they all get resized to 640x480 in the upper left corner.

This is more than frustrating as and desktop ICON layout gets munged and three displays of open applications all are collapsed onto the primary display. If I have had a huge number of Windows open, if I don't re-expand them to the sizes and locations I want, many of them 'think' than this is the 'new normal' and will remember the last position.

This (for me) is probably the 'least' of the major problems I am having with my NUC6i7KYK, but DOES happen on BOTH NUC platforms that I have.

1. Using any combination of more than a single display (with 2x16GB memory installed) has issues (I've got more than one thread on this).
2. About 5 minutes after a cold boot, the KYK 'spontaneously' resets (no BSOD) and the Firmware (BIOS) displays a message about something changing. Once past this, the machine tends to be 'mostly' stable with 16GB of memory.
3. The issue you describe here.

Once the 'top two' (Really bad) issues are fixed (If they ever are) this one is at the level of 'extra annoying', but something I have just begin to accept. (Sad, but given the MONTHS and MONTHS that Intel seems to take addressing issues, this is 'typical'.)

Honestly as far as the iGPU goes I am almost to at the point of just getting Xeon processors. In a pinch the iGPU works well enough with a SINGLE display, but has many issues with multiples.

For many laptops (Other than MacBook Pro) and other 'small appliance' devices the iGPU is the only thing on offer. IF they had a good track record, many times this is just fine.

Good luck to us all in getting Intel to fix this one.

[Allan_J_Intel1]

Were you able to run the latest video drivers?

https://downloadcenter.intel.com/download/26099/Intel-Beta-Graphics-Driver-for-Windows-10-and-Windows-7-8-1-15-40-?product=88345 Download Intel® Beta Graphics Driver for Windows® 10 and Windows 7*/8.1* [15.40]

Please let me know your findings.

Allan.

[PRain1]

I tried out the beta drivers and it has made no difference.

I should add there are rare days I come back to my desk in the morning and find the windows have not all moved to the primary display. But I would still say the longer the displays are a sleep the more likely the windows get moved. And I find they get moved sometimes even after having only gone to sleep for a few minutes.

[idata]

I have not been able to replicate same issue with some demos I have around.

Try getting customized drivers from Dell at: http://www.dell.com/support/home/us/en/04/product-support/product/xps-15-9550-laptop/drivers?rvps=y http://www.dell.com/support/home/us/en/04/product-support/product/xps-15-9550-laptop/drivers?rvps=yOr wait for future driver releases at: https://downloadcenter.intel.com/default.aspx https://downloadcenter.intel.com/default.aspxAllan.

[idata]

This problem has been escalated, any update will be available at

/thread/106403 https://communities.intel.com/thread/106403Allan.

[MBrod]

DisplayPort sleep problem... Same for me.