I'm trying to track down a problem with direct rendering being disabled, after reverting to nouveau on Fedora 18 x64 (the official NVidia drivers were having stability issues). Unfortunately, when glxinfo says, "If you want to find out why, try setting LIBGL_DEBUG=verbose", it seems to be lying, and I need to figure out why.
I've tried about every permutation, from
export LIBGL_DEBUG=verbose && glxinfo to
LIBGL_DEBUG=verbose glxinfo and just about everything in between; "verbose" in quotes, 1 instead of "verbose", running as root or not... absolutely no difference.
A couple other people seem to have had this problem in the past, but never got a resolution. Here's hoping we can change that.