@philm Problem solved! Thank you very much!
I reported the problem because it did not occur with kernel 4.14 and, obviously, did not realize it could be a problem of nbfc.
Since it is an AUR package you might need to recompile nbfc.
In fact I did so before reporting (I should probably have mentioned in my post).
Did you test the git version yet?
No, just the AUR package, which stated version 1.5.3.r65.ga2465ad-1.
Also check the changelog if there was some improvements made. Also your issue was already reported
The “solution” reported there, i.e. deleting or renaming
StagWare.Plugins.ECSysLinux.dll worked for me as well. That is:
- the system boots properly with kernel 4.15 (no black screen any more)
- nbfc-service starts and fan control works as expected