edit: I just realized that the guy in that thread didn't have success editing it, but I think what he was doing was accurate.
boot using nomodeset, then download and install latest driver from nvidia. ubuntu/mint has that fancy 'additional drivers' software to automate the process. then run
Or, if you want to use the nouveau driver for whatever reason just add video=1920x1080@60 to the kernel line in your bootloader, of course adjusted to your needs (this one will obviously give you a resolution of 1920x1080 at 60 Hz).