Mac Pro GTX Titan Black 4k@30Hz after update to 10.13.2 (I hope this is the right place)

[hendrikzuellig]

Hi I just updated my Mac Pro 5.1 to from some older Sierra to 10.13.2 and I lost my 4k60Hz I don't know what I did before to get it. So I google around and landed here. I think I might used this tool to get it working. Hardwarewise it's (still) possible since under Bootcamp with windows I can run 4K@60Hz

[Floris497]

Maybe

[Floris497]

I would suggest to try

[Floris497]

What kind of cable are you using? And did that change? I don't think you would even need the patch.. can you give a bit more info on the configuration? Also windows sometimes users 4:2:0 (YUV) instead of 4:4:4 (RGB) using half the bits makes it possible to get higher refreshrates.

[hendrikzuellig]

First of all: Massive Thank's for your fast response !! I'm using Displayport Cable. When I use the same Cable with a USB C to Displayport adapter on my Macbook Pro 2017 I get 4K@50Hz so I think the Cable is fine. That with the Bitrate makes sense. I just don't understand why it changed after the Update. Config: Mac Pro 5.1 ATI Radeon 5780 to apple Cinema Display GTX Titan black to ASUS PB287Q Display Installed latest Nvidia Web Driver and Coda Drivers. and SwitchresX

[Floris497]

What does switchresx say when making a custom resolution?

[hendrikzuellig]

To be honest I did never use that future so I hope I'm doing it right. If I apply experimentally the screen goes black but Asus Monitor still only reports 30Hz

[Floris497]

You have SIP disabled? And just save and reboot :) would work best

[hendrikzuellig]

"not activated - invalid ?" is what it says :( I managed to add a 25Hz 3840x2160 mode

[Floris497]

Hm.. interesting.. try the patch.. but it's really strange.. I've had it working without patch on MacPro 3.1 with a 1080 and 670 just fine..

[hendrikzuellig]

me to it just happened after the update. I wonder if it's worth the pain of reinstalling everything. By now I could easily have done that with all the time I spent on the Problem ... I tried the patch. It installs well

SIP looks to be disabled, all good! Patching CoreDisplay with patch version 4 Password: Re-signing /System/Library/Frameworks/CoreDisplay.framework/Versions/A/CoreDisplay /System/Library/Frameworks/CoreDisplay.framework/Versions/A/CoreDisplay: replacing existing signature Running 'sudo update_dyld_shared_cache' (Might need re-run after reboot) - CAN TAKE A WHILE (Maybe even 10/30 minutesupdate_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/AssetCacheServicesExtensions.framework/Versions/A/XPCServices/AssetCacheTetheratorService.xpc/Contents/Frameworks/MobileDeviceKitLite.framework/Versions/A/MobileDeviceKitLite update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/BiometricKitUI.framework/Versions/A/BiometricKitUI update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/BookKit.framework/Versions/A/Frameworks/BookKitFoundation.framework/Versions/A/BookKitFoundation update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/BroadcomWLAN.framework/Versions/A/BroadcomWLAN update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/SetupAssistantSupport.framework/Versions/A/SetupAssistantSupport update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/Swift/libswiftDemangle.dylib update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/Swift/libswiftRemoteMirror.dylib update_dyld_shared_cache: warning @rpath install name for system framework: /System/Library/PrivateFrameworks/WirelessDiagnosticsSupport.framework/Versions/A/WirelessDiagnosticsSupport update_dyld_shared_cache: i386 incorporating 627 OS dylibs, tracking 1047 others, building closures for 254 executables update_dyld_shared_cache: x86_64 incorporating 1259 OS dylibs, tracking 1773 others, building closures for 2102 executables update_dyld_shared_cache: warning: i386 adding dependents to /System/Library/PrivateFrameworks/Assistant.framework/Versions/A/Resources/Assistant Plugin.ibplugin/Contents/MacOS/Assistant Plugin: required dylib '@rpath/InterfaceBuilderKit.framework/Versions/A/InterfaceBuilderKit' not found, needed by '/System/Library/PrivateFrameworks/Assistant.framework/Versions/A/Resources/Assistant Plugin.ibplugin/Contents/MacOS/Assistant Plugin' update_dyld_shared_cache: warning: x86_64 adding dependents to /System/Library/BridgeSupport/ruby-2.3/bridgesupportparser.bundle: required dylib '@rpath/libclang.dylib' not found, needed by '/System/Library/BridgeSupport/ruby-2.3/bridgesupportparser.bundle' update_dyld_shared_cache: warning: x86_64 adding dependents to /System/Library/PrivateFrameworks/Assistant.framework/Versions/A/Resources/Assistant Plugin.ibplugin/Contents/MacOS/Assistant Plugin: required dylib '@rpath/InterfaceBuilderKit.framework/Versions/A/InterfaceBuilderKit' not found, needed by '/System/Library/PrivateFrameworks/Assistant.framework/Versions/A/Resources/Assistant Plugin.ibplugin/Contents/MacOS/Assistant Plugin' update_dyld_shared_cache: warning: x86_64 adding dependents to /System/Library/QuickLook/Audio.qlgenerator/Contents/MacOS/Audio: required dylib '/Library/Frameworks/iTunesLibrary.framework/Versions/A/iTunesLibrary' not found, needed by '/System/Library/QuickLook/Audio.qlgenerator/Contents/MacOS/Audio' Closing.

[Floris497]

And does it also work? :)

[hendrikzuellig]

Sadly nope. I guess I will reinstall the whole OS and see if that helps ;) thank's for your time !!