(In reply to fin4478 from comment #4)
> Those stock kernels have very little new  amdgpu and radeon drivers code
> (see diff in kernel.org), use latest drivers when you make bug reports.

There is no such requirement. Depending on the circumstances, we may ask bug
reporters to try a newer kernel, but in this case it seems unlikely that the
problem is kernel related.

> This kernel is latest and stable:
> https://cgit.freedesktop.org/~agd5f/linux/?h=drm-next-4.11-wip

This is the development tree for the amdgpu/radeon drivers, with changes going
into the Linux 4.11 release, which will only get its first release candidate
after the final 4.10 release. I.e. it's cutting edge, *not* stable.