https://bugs.freedesktop.org/show_bug.cgi?id=75992
--- Comment #39 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #38)
Created attachment 97208 [details] [review] try newer mc ucode
Try this patch in conjunction with the updated mc firmware here: http://people.freedesktop.org/~agd5f/BONAIRE_mc.bin
Make sure the new ucode gets used. You may have to update your initrd, etc.