LÖVE

Thanks Slime, I solved the problem.

It sounds like SDL might be being built without GLX support on your system, for some reason.

After reading that, I had to :
-Remove my current installation of libsdl2.
-Download the .tar.gz on this page
-Compile, then install
-Re-install Löve

After that, even if my computer seems to re-install the libsdl2 package (not sure) when I'm trying to install Löve, I was able to run everything without problem.

There's no sdl2 package for saucy because it's in the repos, and installing the ppa one can seriously break your apt, and apparently cause weird issues like this, too.

Same issue on Ubuntu Studio 14.04 .. still having difficulties though. configured, compiled, installed same-wise. Should certain dependencies be purged first?

Thanks!