This problem is now solved.
Thanks galko_ferdinan for your post! I was working from a very similar guide from here:
http://smithfarm-thebrain.blogspot.cz/2013/10/opensuse-131-nvidia-optimus-bumblebee.html
Two additional steps, not covered in the above guide, were required in order to get everything working. The main thing that I had to do for the intel graphics driver to work was to remove “nomodeset” from grub’s linux line. It was apparently put there by the nVidia installer when I installed the nVidia driver for running nVidia exclusively (with optimus hybrid video disabled). However, “nomodeset” was not removed from grub when I removed the nVidia driver with zypper. So, I had to remove it myself with yast’s boot loader kernel parameter settings.
The other thing that I had to do in order for Bumblebee to work was to edit /etc/modprobe.d/50-bbswitch.conf to include: “options bbswitch load_state=1 unload_state=1” followed by “mkinitird”.
Everything now appears to be running properly.
Thanks again.
Gordon