When glxinfo is run on displays without DRI, it sometimes makes the X server crash (backtrace incriminates the _mesa_initialize_context function).

This is currently workarounded in drak3d by blacklisting known drivers on which it crashes, but it should be properly fixed in Mesa.

$ grep "my @glx_blacklist" /usr/lib/libDrakX/Xconfig/glx.pm 
my @glx_blacklist = qw(mga nv sis tdfx vboxvideo vesa vmware)

src/mesa/main/context.c