phi777 Posted September 16, 2016 Share Posted September 16, 2016 Just wanted to say, that the Acer K272HUL is recognised as a NTSC TV because of false EDID overrides in /System/Library/Display/Contents/Resources/Overrides/DisplayVendorID-472/DisplayProductID-3dd file in Sierra build 16A319. Just deleting this file (and rebooting) makes the display a normal 60HZ Computer Screen (the EDID is too long) it should be the attached file (I didn't test it, because deleting it was enough, so I hope I did not make any mistakes entering the number...). Maybe they fixed it by now, because I heard today Sierra 16A323 GM is out, along with Clover 3751 Just for search reference: DisplayProductID (in IOreg) is 0x3dd and DisplayVendorID 0x472 acer-edid.tiff DisplayProductID-3dd.zip Link to comment Share on other sites More sharing options...
dandalf Posted September 20, 2016 Share Posted September 20, 2016 Have you tried deleting it in the actual release? How do you delete a system file? Link to comment Share on other sites More sharing options...
dandalf Posted September 20, 2016 Share Posted September 20, 2016 Nevermind, figured it out. Had to disable System Integrity Protection. https://developer.apple.com/library/content/documentation/Security/Conceptual/System_Integrity_Protection_Guide/ConfiguringSystemIntegrityProtection/ConfiguringSystemIntegrityProtection.html Link to comment Share on other sites More sharing options...
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