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CPieh
Beginner
484 Views

NUC10i7FNK USB-C to HDMI screen flickering/losing sync

I have been trying to troubleshoot this persistent issue for quite some time. I have an Asus MX279 (non-4k) monitor and when I use the Thunderbolt 3 port aka USB-C DisplayPort Alternate the monitor flickers/randomly losing sync very often. I don't even have to be playing videos or anything. When I use the native HDMI port there are no issues at all. Things I have tried:

 

The monitor runs at 1920x1080p with no issues on the native HDMI port. Only when I use the DisplayPort Alternate are these issues present.

 

This is a brand new device released the end of last year. I bought this from CDW so it's not like it was obtained from a shady vendor.

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13 Replies
tstob1
Beginner
182 Views

Interesting, we had the exact opposite. HDMI flickering, went to DisplayPort and has been working well. Sorry I can't be more help.

 

we did use the very latest Intel drivers as opposed to what was listed for the NUC.

 

CPieh
Beginner
182 Views

Furthermore I can confirm there is nothing wrong with any of the dongles or cables that I bought from Amazon. I am able to connect my Samsung S10+ phone using all accessories to my monitor with no screen flickering/losing sync at all.

 

Intel, do I have a bad Thunderbolt 3/DisplayPort Alternate USB-C connector? Is an RMA warranted? What further troubleshooting can I do?

tstob1
Beginner
182 Views

BIOS 38 posted: Fixed issue with BIOS fault tolerance failing after BIOS is resigned.

 

we will probably install. doesn't make much sense to me.

 

I am pretty sure we used these drivers:

 

https://downloadcenter.intel.com/download/29335/Intel-Graphics-Windows-10-DCH-Drivers?product=126789

 

 Curious what monitor you are using?

 

CPieh
Beginner
182 Views

I upgraded to BiOS 0038 tonight and it didn't make a difference.

I am using an Asus MX279 (non-4k). It is several years old before they came out with 4k as a standard on monitors but still has dual HDMI (1.3).

tstob1
Beginner
182 Views

Sorry, didn't see that in your original post. I am confused - you monitor does or doesn't have DisplayPort?

CPieh
Beginner
182 Views

My monitor has no DisplayPort. It has two HDMI and one VGA. Due to this I have to use either a USB-C to HDMI dongle or USB-C to HDMI cable. Neither method works and exhibits frequent flickering and/or intermittent sync loss.

If I use the dongle or the cable from my Samsung phone connected to the monitor there are zero issues. This would prove out the dongle and cable.

tstob1
Beginner
182 Views

Lucky my friend was using Dell 4k monitor with DP, that worked for us, HDMI would not.

 

I use a pair Dell U2518D 2k monitors, nothing high-end, decent monitors.

 

 

OCarr6
Beginner
182 Views

Hello friends, I have the same problem. Does anyone know how to fix it?

 

Thank you.

tstob1
Beginner
182 Views

Have you tried the very latest 26.20.100.7985 drivers on Intel's site?

 

most likely will have to uninstall your old ones to get these to go in.

 

are you using HDMI?

AlHill
Super User
182 Views

OCarr6
Beginner
182 Views

If I have tried with that version and it is not fixed.

I am using DisplayPort. From Thunderbolt to DisplayPort.

tstob1
Beginner
182 Views

Please let us know if the very latest ones make a difference! nice find!

OCarr6
Beginner
182 Views

Hello

 

I have installed the new drivers and it still doesn't work.