Rocksmith 2014 installs fine through Steam. When launching, screen becomes black, but if you move the mouse, a huge mouse pointer is seen. The sound is working and also the keyboard, because there is audio response when typing the arrows. Pressing ESC followed by ENTER quits the game correctly, but then, my screen changes to 700 x 400 (I use an external 1920x1200 monitor through RGB). I'm using Kubuntu 14.04.5 LTS and my notebook is a Clevo with Core i7 and Intel and nVidia Optimus video with 16 GB RAM.
Any ideas to solve this?
I'm Rocksmith 2014 PC Advocate, how can I produce some useful debugging information?
Thanks in advance.