Hello. I had a really hard time to set up the proprietary card drivers for my laptop as I migrated to elementaryOS from Ubuntu 14.04. My vga card is Nvidia Geforce 840M, as well a secondary embedded intel graphics card. I use linux for many years but I am far from being a "power user". I followed the tutorial which is given on this site but I got a blank screen after boot logo instead of a login screen. The only solution I managed to follow was to install bumblebee. However the prime drivers are quite outdated and I altered the bumblebee.conf file to make it use them. The output of lshw -C video is now: *-display UNCLAIMED description: VGA compatible controller product: 4th Gen Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: latency=0 resources: memory:d1000000-d13fffff memory:c0000000-cfffffff ioport:5000(size=64) This output makes me think that it is not well installed. What should I do? I would appreciate any help. I have lost my whole in front of my laptop trying to make it work.