$ xdriinfo --help libGL is too old. Older than what? $ ls -l -L /usr/lib/i386-linux-gnu/libGL.so.1 -rw-r--r-- 1 root root 833540 2015-11-09 /usr/lib/i386-linux-gnu/libGL.so.1 $ ls -l `which xdriinfo` -rwxr-xr-x 1 root root 9584 2015-05-03 /usr/bin/xdriinfo Also --help should give help.
The "libGL is too old." error occurs if the libGL does not provide both the glXGetScreenDriver & glXGetDriverConfig functions. Support for the "--help" option was added upstream in the xdriinfo 1.0.8 release (published today by X.Org), but the libGL compatibility check happens before any argument processing occurs, so may not help in this case.