Currently running Freya on a 2+ years old machine that came with Nvidia dual graphics (GeForce GT 740M). On Ubuntu 14.04, Mint 17 and Elementary 0.3.2, I have had to install Nvidia proprietary drivers using the 'Additional Drivers' dialog box, but I tried the Loki Beta 2 and didn't find this in the menu.
Without this, my laptop simply does not wake up from suspend or even lock screen. As soon as the screen sleeps, I have to force shutdown my laptop and restart it.
However, the solution I found to be working was to install Nvidia binary driver version 352.63. It also install an app 'nvidia-settings' wherein I have to ask it to use Intel graphics on power-saving mode, to get the screen to behave as expected.
Will there be an option to install and use proprietary drivers as easy as it is in Freya? Would I have to find another way to install it in Loki? If so, what would that be?