I recently bought a new Intel NUC8i7HVK and almost everything is perfect. However, one thing is really annoying. I use a Samsung TV as monitor and the NUC makes the TV turn on by itself when it shouldn't. Here is a short description of the problem:
1. I take a break and turns off the TV but leave the NUC on. After a few minutes the TV turns back on without any interaction from me.
2. I shut down the NUC completely and turns off the TV. After a few minutes the TV turns back on, again without any interaction from me.
To prevent this from happening I have to disconnect the NUC from the TV by unplugging the HDMI cable. Another solution that also works is to disconnect the power supply from the NUC.
I am pretty sure that the NUC is the problem. I have connected a laptop PC to the same TV, using the same HDMI cable connected to the same HDMI port in the TV, and everything works as expected. The TV never turns on when it shouldn't.
I have tried disabling the HDMI CEC completely in the NUC's BIOS but the problem remains. It no longer turns the TV on when it starts, but still turns it on a few minutes after I have turned the TV off.
I have also tested by connecting the NUC to other HDMI ports using other cables. The problem remains.
Another thing that makes me suspect that something is wrong with the HDMI connection on the PC side is that the Samsung TV doesn't recognize the NUC as a PC. It recognizes the laptop as a PC after a few seconds.
I have contacted my local vendor and I have been offered to return the NUC for replacement or repair. However, if this is a common problem for all similar NUCs it will be a lot of work for everybody without any rewards.
Furthermore, if it's possible for me to fix this on my own, please advise how to proceed.
My hardware is as follows:
Intel Board ID Tool reports:
Board Model: NUC8i7HVB
Board Version: J68196-502
BIOS Version: HNKBLi70.86A.0053.2018.1217.1739
Operating System: Microsoft Windows 10 Home (64 bit)
Samsung UE65MU8005 is used as monitor running UHD 60 Hz through HDMI 2.0
Adding to Wanner's list, I believe that this can also be caused by using the wrong input port on the TV.
A potential workaround for this issue might be to use a mDP-to-HDMI adapter. Here is an example: https://www.amazon.com/Plugable-DisplayPort-Supports-displays-3840x2160/dp/B00S0BWR2K. Note that there is no support for HDR, unfortunately. You may be able to find a USB-C-to-HDMI adapter that supports HDR, however.
Hope this helps,
1. The Intel NUC is not affected when the TV turns on. This option is not enabled in the BIOS.
2. TV settings is not causing this problem. It only happens when the NUC is connected. When I connect another PC to the same HDMI port using the same cable the TV does not turn on.
3. Yes, the TV is always connected to the Internet and auto-updates with the latest firmware.
4. I have downloaded and executed the Intel System Support Utility. The result is attached as "SSU System Information.txt"
I have tried all four HDMI-ports on the TV with exactly the same result.
Thanks for the tip. Using one of the other display output ports on the NUC with an adapter might work. However, I don't have any adapters so I cannot test this at the moment. Anyway, I regard this as a problem that should be fixed and I will return the NUC for replacement if this is not a known problem for all similar NUCs.
I have ordered a new HDMI cable (https://www.belkin.com/us/p/P-AV10175/) and will perform the tests you suggest when I get the cable. However, I have already tested with an original PlayStation Pro cable in addition to a few other cables I had available, so my hopes aren't exactly high, but we'll see.
Regarding Samsung, I don't think I'll bother contacting them. I know for sure that my TV software was upgraded a few days ago, and as I've told you, this happens only when the NUC is connected to the TV, not with any of my other devices (Samsung DVD player, PlayStation Pro, Chromecast, Acer laptop plus an Asus Wireless router).
I have now got my new HDMI cable and are using it to connect the NUC to my Samsung TV. Problem remains.
I have disconnected the network cable from my TV. Problem remains.
I have loaded the default BIOS values. Problem remains.
I have disconnected the NUC from my TV. Problem "solved".
I have not contacted Samsung.
I will return the NUC for replacement.
I have now received a new NUC from my vendor. Unfortunately, this new machine has exactly the same problem as the old one. This leads me to believe that this is a common problem for all similar NUCs. Nevertheless, I have decided to keep the NUC and turn off HDMI CEC on my TV. It is better to live with a TV that must be controlled manually than a TV that turns itself on all the time.