Well, I had the same error just a few minutes ago, and fixed it by un-installing lib64mesagl* (all of them).
Then reinstalling them,
urpmi --noclean lib64mesagl -a
7 files were reloaded, including devel packages.
Then I ran, (this might do you)
sudo ldconfig -Cfrv && sudo symlinks -csrv /
It would be irresponsible of me to not say, "check the man pages for these commands".
then when I run glxinfo it comes up with the lines of details (that make no sense to me, but... lol)
glxgears works too.
Hope this helps you.