https://bugs.freedesktop.org/show_bug.cgi?id=75992
--- Comment #38 from Alex Deucher agd5f@yahoo.com --- Created attachment 97208 --> https://bugs.freedesktop.org/attachment.cgi?id=97208&action=edit try newer mc ucode
Try this patch in conjunction with the updated mc firmware here: http://people.freedesktop.org/~agd5f/BONAIRE_mc.bin