I have installed Ubuntu 14.04 on this Lenovo ThinkPad W540 laptop, and everything appears to be working ok by itself. Today I received my docking station to which I intended to hook up 2 external monitors (worked fine with a Dell on a Dell docking station in Linux Mint 14). One monitor is hooked up via DVI, the other is hooked up via DVI -> HDMI adapter.
I found Dock with dual external DVI monitors with Intel + Nvidia Optimus?, but this laptop has no BIOS setting to disable Optimus. Therefore I installed bumblebee + nVidia propietary drivers.
When I try to configure the Displays, only one of the external monitors and the built-in display show up, and whatever is displayed on that one external monitor is mirrored to the other.
I also attempted without bumblebee using only the discrete card, but that didn't work either. nvidia-settings couldn't detect ANY displays at all. (it doesn't detect the built-in either, leading me to believe something is really off, but I haven't been able to figure out what). Adding bumblebee and using the integrated card turned out to have higher performance with dual monitors.
Can anyone help?
> lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) 01:00.0 VGA compatible controller: NVIDIA Corporation GK106GLM [Quadro K2100M] (rev ff) > sudo dpkg -l | grep nvidia ii bumblebee-nvidia 3.2.1-90~trustyppa1 amd64 NVIDIA Optimus support using the proprietary NVIDIA driver rc nvidia-331 331.38-0ubuntu7 amd64 NVIDIA binary driver - version 331.38 ii nvidia-331-updates 331.38-0ubuntu7 amd64 NVIDIA binary driver - version 331.38 rc nvidia-libopencl1-331 331.38-0ubuntu7 amd64 NVIDIA OpenCL Driver and ICD Loader library ii nvidia-libopencl1-331-updates 331.38-0ubuntu7 amd64 NVIDIA OpenCL Driver and ICD Loader library rc nvidia-opencl-icd-331 331.38-0ubuntu7 amd64 NVIDIA OpenCL ICD ii nvidia-opencl-icd-331-updates 331.38-0ubuntu7 amd64 NVIDIA OpenCL ICD ii nvidia-prime 0.6.2 amd64 Tools to enable NVIDIA's Prime ii nvidia-settings 331.20-0ubuntu8 amd64 Tool for configuring the NVIDIA graphics driver > sudo dpkg -l | grep bumblebee ii bumblebee 3.2.1-90~trustyppa1 amd64 NVIDIA Optimus support ii bumblebee-nvidia 3.2.1-90~trustyppa1 amd64 NVIDIA Optimus support using the proprietary NVIDIA driver