[marcos@ ~]$ export LIBGL_DEBUG=verbose
[marcos@ ~]$ steam
Couldn't find dpkg, please update steamdeps for your distribution.
Running Steam on fedora 18 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1370457613_client)
libGL: screen 0 does not appear to be DRI2 capable
libGL: OpenDriver: trying /usr/lib/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib/dri/swrast_dri.so
libGL: Can't open configuration file /home/marcos/.drirc: Arquivo ou diretório não encontrado.
libGL error: failed to load driver: swrast