https://bugs.freedesktop.org/show_bug.cgi?id=92936
--- Comment #10 from Andy Furniss adf.lists@gmail.com --- Will test patch sometime later, as it happens I built latest 4.6-wip last night and managed to see memclk stuck without (knowingly) touching UVD.
I was running with auto and it's quite possible that leaving alone and running another high usage gl app would have worked, but to test I tried forcing and got -
Feb 5 00:38:44 ph4 kernel: Failed to send Message. Feb 5 00:38:44 ph4 kernel: [ powerplay ] Target_and_current_Profile_Index. ^I^I^I^I^I^ICurr_Mclk_Index does not match the level Feb 5 00:38:47 ph4 kernel: Failed to send Previous Message.
In addition after that I rebuilt latest llvm/mesa which has resulted in dmesg full of vmfaults, so I now need to sort that first.