It is my understanding that the proprietary Nvidia driver is more power efficient than the open source nouveau driver.  However, I have not been able to boot Fedora 21 (F21) with it [1].  I have tried using the driver straight and with Bumblebee [2].  Both times, my computer failed to load GDM with errors like:

(EE) Failed to load /usr/lib64/xorg/modules/extensions/libglx.so: libnvidia-tls.so.346.35: cannot open shared object file: No such file or directory

"Oh no! Something has gone wrong!"

I am interested in the laptop being as power efficient as possible and also connecting to two external monitors.  Is this possible?  What is the recommended way to accomplish this?

FYI - here is the video output from my lspci:

00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
02:00.0 3D controller: NVIDIA Corporation GK107GLM [Quadro K1100M] (rev a1)

Thanks,

Jacob

[1] http://rpmfusion.org/Howto/nVidia

[2] https://fedoraproject.org/wiki/Bumblebee