I observe the same issue as described /message/495195# 495195 here on NUC6CAYH but this time on NUC7CJYH.
After enabling the watchdog iTCO_wdt module, the device /dev/watchdog is not created.
This device is a Canonical certified hardware for Ubuntu 16.04
# uname -a
Linux player-4e2d 4.15.0-30-generic # 32-Ubuntu SMP Thu Jul 26 17:42:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
in Kernel.log :
Aug 13 13:13:36 player-4e2d kernel: [ 14.742184] iTCO_vendor_support: vendor-support=0
Aug 13 13:13:36 player-4e2d kernel: [ 14.756001] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
Bios is updated in version 0042 :
# sudo cat /sys/devices/virtual/dmi/id/bios_version
Thank you for joining the community.
I see that you are having problems with the Intel® NUC7CJYH, allow me to help you with the inquiries.
Allow me to share with you that Intel does not test and validate Intel® NUC on Linux, however, we know that a lot of NUC owners are using it successfully on many different Linux distros. I will suggest you check your Linux distro's website and forums at https://community.ubuntu.com/ https://community.ubuntu.com/ for peer assistance with this issue.