NUC8i7HVK USB Type-C two display configuration issue

[Riddle]

I have 2 similar display Dell S2718D connected through rear USB Type-C but after wake up one of them some times (approx. 1 of 7 wake up cycles) can't determine correct resolution (screen 1, 2 and 3). It is return to normal resolution after unplug and plug monitor back or power monitor off and then on (screen 4).

For test purpose I connect one of the monitor to HDMI port and 5 days there is no issue appeared and them both works as it's should.

[David_V_Intel]

Hello Riddle, Thank you for posting on the Intel ® communities. First, I would like to know exactly how you are connecting the monitors, specifically, I want to know if you are using straight USB-C to USB-C connections or other kind of adapters. Also, To better assist you with your request, I will need to check some information about your computer. Please follow these steps: 1. In the keyboard, press WinLogo key + R. 2. In the Run box please type dxdiag and hit Enter. 3. Click on Save All Information (save it in your desktop). 4. Attach the report to this thread. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[Riddle]

Hi David,

Monitors are connected directly to NUC by USB-C to USB-C cable without any kind of adapters.

[David_V_Intel]

Hello Riddle, Thank you for your response. Please proceed to install the Thunderbolt* driver for the Intel ® NUC unit, this driver can be found in the link below: https://downloadcenter.intel.com/download/27796/Thunderbolt-Bus-Driver-for-Windows-Server-2016-for-I... After the download is complete, please install it and reboot the system, let me know if the issue persists after the process is complete. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[Riddle]

Hi David,

I'm install linked driver, but before remove early installed thunderbolt_win10_64_17.3.72.250 and restart PC.

In next few days I will look for issues and write back.

[David_V_Intel]

Hello Riddle, Thank you for your response. Perfect, please let me know the outcome. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[Riddle]

Hi David,

That sad, but my issue happens again just now after 9 wake up cycle.

Also tells some additional details of my observation.

There is no link between monitor sleep time and issue occurrence. It can happens with very short sleep time less then 1 minute and also with a long sleep time if I don't power off my NUC for night.

[David_V_Intel]

Hello Riddle, Thank you for your response. After reviewing some information, I have found that the monitor has a driver that could assist with any possible issues you may be experiencing so my recommendation is for you to update the driver, please refer to the link below: https://www.dell.com/support/home/us/en/04/product-support/product/dell-s2718d-monitor/drivers * Please be aware that the content on that site is not controlled by Intel*. This information is offered for your convenience and should not be viewed as an endorsement by Intel* for the merchants or services offered there. * Let me know the outcome. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[Riddle]

Hi David,

Update display driver was the first I've done before ask about my issue here but this does not help.

Today I'm remove driver then reinstall it, but issue was happened again after second wakeup.

[David_V_Intel]

Hello Riddle, Thank you for your response. Have you tried other monitors with the system to see if the issue is present? By other monitors I mean different brand or models. This is important so we can diagnose if the problem is with the monitor. You could also try to connect the monitors with different USB-C cables just to test. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[David_V_Intel]

Hello Riddle, I am following up with your case and see that we have not heard back from you. Were you able to try other monitors or cable? If you need more assistance do not hesitate to reply. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[Riddle]

Hi David!

For now I can't find any other USB-C monitor for test purposes. And buy another one not in my plans for now.

I will change monitor cable to new one. I response on result after issue appears or not.

[David_V_Intel]

Hello Riddle, Thank you for your response. Let me know please. Regards, David V Intel Customer Support Technician Under Contract to Intel Corporation

[Riddle]

Hi David!

After 6 days there is no monitors issue appears with another USB-C cable. Looks like it was broken.

Thank you for help and assistance!