https://bugs.freedesktop.org/show_bug.cgi?id=98988
--- Comment #8 from John Brooks bugs.freedesktop@fastquake.com --- (In reply to Alex Deucher from comment #6)
What is the md5sum of the bonaire_uvd.bin file on your system? For the latest file in git (http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/ plain/radeon/bonaire_uvd.bin) I get 3106157934a8feb55145c4f5de3128e2 which matches the md5sum in the firmware Leo attached in attachment 128558 [details].
I clobbered my backup by accident but it was different from that. The one that apt-get gives me if I reinstall linux-firmware (version 1.157.6 from xenial-updates; this is Mint 18) has an md5sum of 9f2ba7e720e2af4d7605a9a4fd903513