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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Random black screen on RX 470, HDMI 4k-60Hz"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102389#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Random black screen on RX 470, HDMI 4k-60Hz"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102389">bug 102389</a>
from <span class="vcard"><a class="email" href="mailto:jb5sgc1n.nya@20mm.eu" title="dwagner <jb5sgc1n.nya@20mm.eu>"> <span class="fn">dwagner</span></a>
</span></b>
<pre>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.</pre>
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