https://bugs.freedesktop.org/show_bug.cgi?id=61529
--- Comment #4 from Thaddaeus Tintenfisch thad.fisch@gmail.com --- Created attachment 116881 --> https://bugs.freedesktop.org/attachment.cgi?id=116881&action=edit dmesg snippet
I have applied radeon-gart_tlb_flush-NULL.diff to git master and it does fix the hard lockup. However, powering off the dedicated GPU still triggers some kernel panics (see attached log file).