https://bugs.freedesktop.org/show_bug.cgi?id=109887
--- Comment #6 from Jon Doane jrdoane@gmail.com --- I'm also having this particular issue with a Vega 64. It appears that setting any non-stock voltage to any of the power states will cause the voltage at any clock to jump to 1.20v. I haven't been able to find a way around it yet.