https://bugs.freedesktop.org/show_bug.cgi?id=100395
--- Comment #6 from Harry Wentland harry.wentland@amd.com --- Thanks, Andy, for the report and taking the time to bisect.
Jordan from my team spotted the bug as well and is working on a solution.
If you're curious about the cause of this... The gist of it is that we don't fill in some info for pplib on DCE 8 and 10 because we don't have the full bandwidth formula implemented. So we either have to fill in some reasonable values or make sure DCE 8 and 10 use the old codepath.
Hope to have a fix soon.