Comment # 26 on bug 91202 from Thomas R.

ASUS STRIX-R9285-DC2OC-2GD5:

Still not working in Mainline 4.9.11. 
Not working in any DAL-4.7 version, either (tried all commits Guido mentioned,
but it seems he switched cards in between, now having reported a bug for a
Sapphire Nitro Radeon R9 380X.