https://bugs.freedesktop.org/show_bug.cgi?id=98988
--- Comment #12 from John Brooks bugs.freedesktop@fastquake.com --- (In reply to Alex Deucher from comment #9)
I think the fix is to make sure Ubuntu has the latest firmware from the linux firmware git tree.
Ubuntu only started shipping an affected kernel in 16.10 (yakkety), and in that release they are also shipping the updated linux-firmware (I downloaded the package from http://packages.ubuntu.com/yakkety/linux-firmware and ran md5sum on the file). I think that the Ubuntu users affected by this issue are those that installed a newer kernel on an older Ubuntu release. Those users will just have to make sure they install the newer firmware too.
Anyone using kernel 4.7+ should make sure that their bonaire_uvd.bin is up to date.