Hi Everyone,

I've just tested Linux 5.0-rc1 and have not encountered the problem so far.
Looking into it more, I think the same patch set that fixed the Sapphire RX 590
for Michael @ Phoronix also fixed my Sapphire RX 570.

Assuming this is the main patch that fixed the issue:
https://github.com/torvalds/linux/commit/816b6931315b641c5864cf33a9363cb89da05d0b
(specifically the line that sets ucEnableApplyAVFS_CKS_OFF_Voltage). Looking at
the code, it seems a bunch other GPUs are affected (besides the RX 590 and RX
570).

Could you guys please send this patch series for inclusion into the stable
kernel? Since it fixes a huge stability issue I think it is a reasonable
request.