es27 Posted March 11, 2019 Share Posted March 11, 2019 I had my HD 6870 working fully with Sierra however after installing High Sierra once the display flashes (when the resolution changes around 3/4 of the progress bar) I simply get a black screen or a grey screen depending on my options. Has anyone got a solution for the Saphire 6870 or anyone got it working? Link to comment https://www.insanelymac.com/forum/topic/337904-hd-6870-shows-greyblack-screen-after-screen-flashes/ Share on other sites More sharing options...
es27 Posted March 12, 2019 Author Share Posted March 12, 2019 Fixed it I used the Sierra roll back and InjectATI=No not sure which one of those made it work but now it fully works Link to comment https://www.insanelymac.com/forum/topic/337904-hd-6870-shows-greyblack-screen-after-screen-flashes/#findComment-2666662 Share on other sites More sharing options...
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