[Bug 102389] Random black screen on RX 470, HDMI 4k-60Hz

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102389

--- Comment #7 from dwagner <jb5sgc1n.nya at 20mm.eu> ---
Just a thought: The symptom you describe ("random black screen, lasting for 1-2
seconds") can be caused by bad HDMI cables - especially when using 4k / 60Hz
modes - I had experienced that in the past on two occasions.

Have you tried using a different (preferably short, high-quality) cable?

BTW: Only very few HDMI cable vendors guarantee their products to work up to
600MHz clock frequency, which you require for 4k 60Hz.

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