Yes, it looks like in quantal, we should have modified:
/etc/X11/Xsession.d/50_check_unity_support
to export LIBGL_ALWAYS_SOFTWARE=1 if the support test fails, thus enabling LLVMpipe.
It seems what we've done instead is just delete the file. So hardware that doesn't support UnityShell won't automatically fall back to LLVMpipe like it should.
Yes, it looks like in quantal, we should have modified: X11/Xsession. d/50_check_ unity_support SOFTWARE= 1 if the support test fails, thus enabling LLVMpipe.
/etc/
to export LIBGL_ALWAYS_
It seems what we've done instead is just delete the file. So hardware that doesn't support UnityShell won't automatically fall back to LLVMpipe like it should.