https://bugs.freedesktop.org/show_bug.cgi?id=103080
--- Comment #1 from Harry Wentland harry.wentland@amd.com --- Hi Carlo,
please pass amdgpu.dc=1 module parameter or set CONFIG_DRM_AMD_DC_PRE_VEGA flag at build.
With this branch we decided to only enable it by default for Vega ASICs. With anything older than Vega you'll have to force enable it.
Harry