Resolution changes to 960x540 after adding user to bumblebee group

Disaster after that, stuck on black screen. I will clean install again. No chroot, nothing, change for another nvidia drivers that not are bumblebee, make a mess.

Anybody can give me a guide in order to install correctly nvidia propietary drivers? Or I will be eternally with bumblebee? Hardware error? Why runs on Windows and Linux Mint and not in Manjaro?

The system every time installs video-hybrid-intel-nvidia-390xx-bumblebee never another nvidia. If I manually install another, I get stucked in blank screen.