Hi Kernel Maintainers,
I'm using Debian 9 ("Stretch", has just become stable) with Kernel 4.9.30.
Recently I added a AMD Radeon RX 550 (Polaris 12) graphics board to my system 
to connect an
Ultra HD Monitor using Display Port 1.2, which the Intel Ivy Bridge core i5 
Unfortunately 4.9.30 did NOT support AMD Radeon RX 550 (Polaris 12).
I had to use kernel 4.11.
Are you planning to backport support for AMDGPU Polaris 12 (AMD Radeon RX 5xx 
Series graphics boards)
from 4.11 or later back to 4.9?
"Other things" include Mesa, Firmware, libdrm, xf86-video-amdgpu, which aren't 
a big deal to compile.
The kernel, however, takes 30min+ and the next lonterm kernel might not be too 
compatible to Debian 9.
Best regards,
   Axel Rohde

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