https://bugzilla.kernel.org/show_bug.cgi?id=83461
--- Comment #8 from kb@spatium.org --- Also, I've noticed that when X boots, the "good" kernels give this sequence: 1) TV blanks with "No signal" message briefly 2) Desktop shows normally And the "bad" kernels give: 1) TV blanks with "Mode not supported" message for a longer time 2) Desktop shows, blinking and/or flickering