I was trying to run steam from the launcher but it never opened. I ran steam in the terminal and this was the output:
Running Steam on ubuntu 17.04 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1504757234)
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
Any help would be greatly appreciated. I haven't the first idea of how to fix this.
