Sounds like either your mesa-libGL or your xorg-x11-server RPM is too
old.
The opcodes for GLX_EXT_texture_from_pixmap were recently updated,
and if
libGL and your server disagree on these values, white windows is what
you will
get. I did add Conflict:'s to the RPMs to prevent this, but maybe
that didn't
work. I have a i965 here that works with todays rawhide; can you try to
update these two packages and see if that works for you?
I'm running mesa-libGL-6.5.1-3.fc6. What's more, I had to recompile
i965_dri.so since otherwise glxgears and other opengl apps would fail
immediately at startup. Also had some mtrr issues impacting performance.
I'll try those new releases.