After installing NVIDIA 331 graphics driver for my NVIDIA 740M my laptop boots to Ubuntu in "low graphics mode". If someone could walk me through the steps of deactivating the NVIDIA driver and re-enabling the Intel one that would help me out quite a bit.
I have 770M and had same problem with 14.04 Ubuntu. If I were you, I'd:
Uninstall everything related to nvidia and bumblebee
sudo apt-get remove nvidia-* sudo apt-get remove bumblebee-*
sudo apt-get install bumblebee bumblebee-nvidia
sudo -H gedit /etc/bumblebee/bumblebee.conf
as suggested by the Ubuntu wiki bumblebee page. It should contain:
Driver=nvidia KernelDriver=nvidia-331-updates LibraryPath=/usr/lib/nvidia-331-updates:/usr/lib32/nvidia-331-updates XorgModulePath=/usr/lib/nvidia-331-updates/xorg,/usr/lib/xorg/modules
It's not perfect, but better than Intel, for sure.