bash-4.2$  LIBGL_DEBUG=verbose glxinfo > /dev/null #
libGL: XF86DRIGetClientDriverName: 4.3.0 r600 (screen 0)
libGL: OpenDriver: trying /usr/lib64/dri/r600_dri.so
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 4, (OK)
drmOpenByBusid: Searching for BusID pci:0000:01:05.0
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 4, (OK)
drmOpenByBusid: drmOpenMinor returns 4
drmOpenByBusid: Interface 1.4 failed, trying 1.1
drmOpenByBusid: drmGetBusid reports pci:0000:01:05.0
libGL error: Calling driver entry point failedlibGL error: reverting to software direct rendering
libGL: OpenDriver: trying /usr/lib64/dri/swrast_dri.so
libGL: Can't open configuration file /etc/drirc: No such file or directory.
libGL: Can't open configuration file /home/edugonch/.drirc: No such file or directory.