Comment # 4 on bug 105433 from Michel Dänzer

(In reply to Thomas R. from comment #3)
> [drm] dce_get_required_clocks_state: clocks unsupported disp_clk 681000
> pix_clk 148500

FWIW, I get the same message with Tonga, with a single DVI connection. I
haven't noticed any obvious ill effects related to it though, so it might not
be relevant for this issue.