alan@wopr:~$ sudo pmap `pidof X` | grep dri.so
00007ff1f1050000   7620K r-x-- swrast_dri.so
00007ff1f17c1000   2048K ----- swrast_dri.so
00007ff1f19c1000    348K r---- swrast_dri.so
00007ff1f1a18000     48K rw--- swrast_dri.so
alan@wopr:~$ lsmod | grep drm
alan@wopr:~$