Just had an issue where I couldn’t boot into Gparted desktop. It kept on giving me a wrong screen resolution and the standard startup-options didn’t help much. After a bit of searching, I found out that you can hit Ctrl+Alt+Backspace to get into a good looking Console with an OK resolution – just do:
1: >sudo forcevideo
It will guide you through all the options needed to do the startup and you will get into a nice looking desktop with an OK resolution. I used 800×600, Vesa driver and 16bit depth and that was it.