I am running a XFX Radeon R9 280X with a Samsung U28D590D monitor. Using HDMI for 4K @ 30Hz works well, but when I switch to using the mini-dp port to get 4K @ 60Hz I get ridiculous flickering! It starts with the splash screen and continues. If you drop the resolution the flickering goes away. Booting the same rig into windows displays 4k @ 60Hz without any issues. I have tried the open source drivers, the 14.6 beta drivers and the latest omega drivers without any luck. I have reached out to AMD Tech Support but no response as yet. Can anybody suggest anything else to try?

  • You have tried almost everything that can be done. This can probably be only resolved by AMD. – Sachin S Kamath Jan 13 '15 at 6:19
  • I am also experiencing this same issue, but with built-in 4k display on my Dell Inspiron 7548 using an R7 M250. – Jared Tritsch Feb 17 '15 at 19:24
  • Exact same setup - flickering only happens with chrome, so far... – rm-vanda Jul 21 '15 at 23:17

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