We have an AIX 5.1 machine that came with AIX preinstalled. The X
server is configured to start the GLX extension (and its buddies), but
I get in /tmp/xlogfile:

GLX: Failed to load adapter-specific OpenGL code for screen 0
__glXExtensionInit: __glXScreenInit failed

and of course GLX doesn't show up in xdpyinfo.

I'm guessing that the GXT135P is a relatively new low-end graphics
card, but shouldn't OpenGL be supported via software rendering? A
quick look in /usr/lpp/gai shows files like '3dm5/loadsoftm5' and so
on, which is somewhat encouraging, but apparently not sufficent to get
things working. It sort of looks like I am missing a driver for this
card or something.

Any ideas?

Karl