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Author Topic: Sapphire R9 280X and other flashed cards goes to black screen post boot on DVI  (Read 95 times)
Spacedust
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« on: October 19, 2017, 10:05:38 PM »

I've discovered that many flashed cards are going to black screen post boot when using DVI port on High Sierra. Reconnecting the display connector fixes the issue. Anyone else experienced this?

It happens only on Apple Cinema HD Displays.

It works well when used with HDMI->DVI or mDP/DP->DVI adapters.
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owbp
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« Reply #1 on: October 20, 2017, 11:32:33 AM »

No problem on Dell (DVI) monitor or generic TV (HDMI), but i will try to test it with Cinema Display as soon as possible.
It's in my parents house, gave it to my dad, so there is that trip i have to make to test it Smiley

What i have noticed is that High Sierra is first OS till now that gives me Recovery HD boot on my main monitor and not TV (DVI instead HDMI like it was).

P.S. I have Gigabyte R9 280X rev2, reference outputs, so everything works as it should.
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Spacedust
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« Reply #2 on: October 20, 2017, 02:18:09 PM »

Works well on Philips 4K 23,6" display, but doesn't work on Apple Cinema HD Display 23".
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