(In reply to Takashi Iwai from comment #3) > Is drm-kmp-default installed? If yes, try to uninstall and re-install > nvidia again. Yes. It's installed. I've uninstalled and reinstalled the Nvidia driver several times and it doesn't help. Did you use a different version of gcc when compiling the sources for kernels 4.4.10x and 4.4.11x?