I also opened a bug report for Mesa (https://bugs.freedesktop.org/show_bug.cgi?id=109958) as the glxgears problem occurs on different distributions, not just (K)ubuntu.
I also opened a bug report for Mesa (https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 109958) as the glxgears problem occurs on different distributions, not just (K)ubuntu.