Comment # 17 on bug 100443 from alvarex

I also get a lot of "ret" messages, but different. 

                failed to send message 18a ret is 255 
                failed to send pre message 145 ret is 255 
                failed to send message 18a ret is 255 
                failed to send pre message 145 ret is 255 

My card is stuck at 300mhz memory speed and it doesn't matter what I do, it
won't change, I even tried using the RoCm stack with that custom kernel and
using the rocm utility to set the memory performance level, and it also
wouldn't let me.