Comment 10 for bug 1654583

glxinfo only reports Mesa. AFAIK this is a software only renderer for OpenGL. It seems likely that SDL ignores this, as it will not provide hardware accelerated graphics (which are now required for b19).

In b18, in the options menu you can enable OpenGL. I bet that it won't start then either.

It seems like you are missing OpenGL drivers for your graphics card, or they are not properly configured. I do not know how to go about this though :/.