Comment # 100 on bug 79980 from Alex Deucher

(In reply to comment #99)
> I am not sure if this is related, but what I see _a lot_ recently in my
> kernel log is this:
> 
> [  554.747835] [TTM] Illegal buffer object size
> [  554.747837] [TTM] Illegal buffer object size
> [  554.747838] [drm:radeon_gem_object_create] *ERROR* Failed to allocate GEM
> object (0, 6, 4096, -22)

Unrelated.  You are seeing bug 82162 which is already fixed.