Hi again
OK, no powerplay messages that time. Was performance back to what you expected ?
Yes, performance on 4.10.12 is what i call normal
I was bisect the 4.11 kernel when 4.12 was released, and guess what? The problem is fixed in 4.12, i can get normal performance in vulkan again... but not all is perfect...
After the kernel update to 4.12 and also a firmware update from the distro, i see no errors on the dmesg (probably the most of the errors were firmware related?), but i found that after several suspend cycled, the GPU is locked in the lowest mclck and even the sclck seems to be harder to increase.
As per radeon-profile, the performance is still auto and even trying to switch to high or manual makes no difference, mclck is locked on the lower value.
So something in the suspend *sometimes* lock GPU the power profile on a lower state.
I also found that even after boot, and switching to manual, i can't decrease the mclock, at least it by default on the highest setting, but i may point to some problem switching the mclck. sclck i can manually change, so no problem there.
Thanks for all the mesa and amdgpu work higuita