I found that it can be "fixed" by Xgl. Fonts can display fine under Xgl, but no properly under Xorg7.1 .
-- nvidia not compatible with Xorg 7.1 RENDER (Fonts don't appear in edgy) https://launchpad.net/bugs/55802 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
