Nobody@Home: Thank you very much for joining the Intel® NUC communities.
In order to better assist you we just wanted to confirm:
What is the Linux version you are using?
What is the Kernel version you are using?
Any further questions, please let me know.
I use "Archlinux" as the distribution (it has no versioning) and the kernel version 4.9.30, configured and compiled by myself.
BTW: It doesn't matter, which linux (Ubuntu, Redhat, a.s.o.) and which kernel (4.4.x, 4.9.x or 4.12.x) are in use: IT8607E is not supported yet. Without datasheets it's not possible to make a driver!
Unfortunately, ITE has not made the datasheet for the IT8607E SIO public and, since Intel's copies were received under NDA, Intel cannot provide it to you. You will have to contact ITE directly if you would like to obtain a copy.
I already did it some weeks ago: ITE doesn't provide the datasheets to me and "sends" me to Intel as the manufactorer of the computer.
So the advice from N. Scott Pearson was as helpful as his interference. Not at all...
Forget my question...