https://bugs.freedesktop.org/show_bug.cgi?id=91880
--- Comment #98 from Lauri Gustafsson luutifa@gmail.com --- Yup, can confirm that http://people.freedesktop.org/~agd5f/radeon_ucode/k/hawaii_k_smc.bin partially fixes the issue. Screen(s) are a bit flickery when running GPU heavy applications but no crashes or hangups.