darkvoid Posted June 25, 2016 Share Posted June 25, 2016 On macOS Sierra DP1, a part of the IOKit functionality dealing with graphics has moved to a new framework kext: CoreDisplay.kext. This affects the existing IOKit maximum pixel clock patch used for previous OS X versions. The new patch to be applied for macOS Sierra DP1 is: sudo perl -i.bak -pe 's|\xB8\x01\x00\x00\x00\xF6\xC1\x01\x0F\x85|\x33\xC0\x90\x90\x90\x90\x90\x90\x90\xE9|sg' /System/Library/Frameworks/CoreDisplay.framework/Versions/Current/CoreDisplay sudo codesign -f -s - /System/Library/Frameworks/CoreDisplay.framework/Versions/Current/CoreDisplay 6 Link to comment Share on other sites More sharing options...
Xeon3D Posted July 7, 2016 Share Posted July 7, 2016 I was wondering if you could explain in more layman's terms, what does this affect, and who needs to run it (Nvidia users? AMD? Intel? All?) Thanks. Link to comment Share on other sites More sharing options...
luxus Posted July 8, 2016 Share Posted July 8, 2016 @xeon3d https://github.com/Floris497/mac-pixel-clock-patch-V2 What does this patch resolve? makes 4K/3840x2160/UHD/2560x1080/3440x1440 resolutions possible on older macs over both HDMI and DisplayPort. (other odd/high resolutions should also work) Enables HDMI2.0 on Nvidia Maxwell cards (Never tested this myself, for this you only need the IOKit patch not the Nvidia patch) Link to comment Share on other sites More sharing options...
transocal Posted September 27, 2016 Share Posted September 27, 2016 Has anyone got this to work on the official release of Sierra? I used Floris Pixel Clock CoreDisplay-patcher with the club3d CAC-1070 DP to HDMI adapter on GTX 760 and was working in El Capitan, but can only get 3840x2160x30Hz, but not 60Hz. Thanks. Link to comment Share on other sites More sharing options...
UNOE Posted October 28, 2016 Share Posted October 28, 2016 Thanks for updated patch haven't tested it yet but wanted to make sure this was available before updating. Link to comment Share on other sites More sharing options...
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