nVidia driver and bumblebee not working in fedora 21
Hi! I installed Fedora 21 Workstation on my new Asus N56JK and altough it's fast and beatiful I've got some problems with it; I managed to solve most of them (brightness function keys, subwoofer, etc.), but I'm still having trouble with the discrete nVidia GPU (which is a Maxwell-based GTX 850m) management under Fedora; I followed the Fedora wiki Bumblebee's guide, but, like other people reported time ago, there are a bit of complications the wiki guide doesn't deal with, related to Fedora's UEFI implementation; in particular, I initially got errors like these ones:
ERROR: The kernel module failed to load, because it was not signed by a key that is trusted by the kernel. Please try installing the driver again, and sign the kernel module when prompted to do so.
ERROR: Unable to load the kernel module 'nvidia.ko'. This happens most frequently when this kernel module was built against the wrong or improperly configured kernel sources, with a version of gcc that differs from the one used to build the target kernel, or if a driver such as rivafb, nvidiafb, or nouveau is present and prevents the NVIDIA kernel module from obtaining ownership of the NVIDIA graphics device(s), or no NVIDIA GPU installed in this system is supported by this NVIDIA Linux graphics driver release.
I tried to apply the solutions proposed in other older questions related to fedora 20 but they didn't work (I tried to edit the bumblebee-nvidia script but I just got the effect of nvidia module not being loaded at boot and still causing the missing key error if loaded manually and I tried to disable key checking but I didn't manage to make nvidia driver work and I also got at every boot a shim screen before Fedora boot related to key management).
Is there a clean and "official" way to solve this annoyance? Or at least a still working way to use bumblebee with nouveau driver?
Thanks in advance!