X won't start at "drm/amd/pp: Simplified the avfs btc state on smu7" on "drm-next-4.17". https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-4.17&id=116af45059139e8a156c9993bc4aa94625bd9c5e Odd, I thought I remember X starting with commit, "amdgpu/dm: Default PRE_VEGA ASIC support to 'y'" on the the "drm-next-4.17-wip" branch and that commit is AFTER "drm/amd/pp: Simplified the avfs btc state on smu7" on branch "drm-next-4.17".
Fixed with this patch: https://patchwork.freedesktop.org/patch/211482/
patch 211482 manually applied on drm-next-4.17-wip allowed X to start now.
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