How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

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These are instructions on how to enable support for the 5K HP Z27q display in OS X Yosemite 10.10.3 or higher. The Z27q monitor offers 5K resolution at a much lower price than the Dell UP2715k and it claims accurate color calibration for sRGB, Adobe RGB, and BT.709.

These steps detail the instructions on how to get the monitor working with the Late 2013 Mac Pro; however, they should also work for those with the Late 2014 5K 27-inch iMac.

How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step One
With both devices off, connect the left DisplayPort port on the monitor to the number two(#2) mini-DisplayPort port on the Mac Pro using a male DisportPort to male mini-DisplayPort cable. Note*: You'll need two of these cables and they must support the DisplayPort 1.2 standard.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Two
Turn on the power at the back and front of the HP Z27q monitor then power on your Mac Pro.

Step Three
Your computer will boot and the monitor will likely default to a resolution of 4096x2160.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Four
Download this zip file to a folder on your computer: DisplayVendorID-22f0-iClarified.zip
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Five
Double click the archive to extract a folder named DisplayVendorID-22f0.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Six
Launch a new Finder window by clicking Command+n.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Seven
Press Command+Shift+G or choose Go to Folder... from the Go menu.

Input /System/Library/Displays/Overrides into the entryfield that appears and click Go.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Eight
Drag the DisplayVendorID-22f0 folder we extracted earlier into the Overrides folder.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

When prompted click the Authenticate button to authenticate adding a folder to this directory.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Input your username and password then click OK.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Notice, the DisplayVendorID-22f0 folder contains a file called DisplayProductID-317b.mtdd which is a plist that overrides the display settings for the HP Z27q.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Nine
Reboot your computer by selecting Restart... from the Apple menu at the top left of your screen, then clicking the Restart button.

How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Step Ten
Once your computer has rebooted and you've logged into your user account, unplug the cable from the number two (#2) mini-DisplayPort port on the Mac Pro.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Connect the right DisplayPort from the HP Z27q monitor to the number one (#1) mini-DisplayPort port on the Mac Pro, then re-connect the left DisplayPort from the monitor to the number two (#2) mini-DisplayPort on the Mac Pro.

After a few seconds your screen will reappear in glorious 5120x2880 HDPI resolution for Retina viewing of a 2560x1440 work area.
How to Enable Support for the HP Z27q 5K Monitor in Mac OS X Yosemite

Important Notes
* This is not officially supported by Apple.
* We used the specific ports indicated in these steps because they provided the best results during our tests. Technically, you just need to ensure that each DisplayPort cable is connected to a different Thunderbolt bus. We were successful in using other combinations of ports as long as they were on different buses.
* We do not have a Late 2014 5K iMac to test this with; however, Apple has indicated that the iMac does support Dual-Cable Displays. With the right settings in place it should work.
* These steps may also work with other dual-cable 5K displays, if any exist. You would need to modify the Vendor and Product IDs accordingly.

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Andrew Stormont - October 26, 2015 at 11:12pm
This doesn't appear to be needed with Mac OS 10.11.1. There's already an override file for the display with the correct EDID (not the DELL one).
Josh0000 - October 5, 2015 at 3:46pm
I am happy to report that this technique is now successful on a retina iMac under El Capitan! Note that the location where the system file should be placed is changed (/System/Library/Displays/Contents/Resources/Overrides/) and you have to disable SIP to make the modification.
AndyMan1 - August 14, 2015 at 5:11am
Has anyone else with Mac Pro's had issues with this. I got it to work after following the steps, but now after another restart, if I have more than the Port 2 minidisplay port plugged in, the monitor doesn't recognize the feed. No idea how that happened but now I can't seem to get it to come back to 5k.
Keiho - July 30, 2015 at 8:16pm
I have a bit of updates:I have a bit of updates, testing on my: -Macbook Pro 2012(GT650M) -Macbook Pro 2013(GT750M) -Hackintosh(GTX960) 1) Boot Camp -With Windows 10 Professional RTM Installed -With latest Nvidia Driver(Windows) Installed -With latest HP Z27Q Driver Installed I am able to get 5K Resolution with no problem 2) Mac OS 10.10.4 -With latest Nvidia Driver(OS) Installed http://www.insanelymac.com/forum/topic/301416-nvidia-web-driver-updates-for-yosemite/ -With DisplayVendorID-22f0 folder Installed https://www.iclarified.com/49265/how-to-enable-support-for-the-hp-z27q-5k-monitor-in-mac-os-x-yosemite I am able to get 5K Resolution too!! On HP Z27Q, It is just the screen is spilt into 2 with the right half of the desktop displayed and duplicated. Conclusion: The hardware is fully supporting MST with Nvidia driver. We need a HP Z27Q OS driver update from apple/HP/iclarified to get it running on Nvidia Mac!! thx!!
keiho - July 26, 2015 at 6:50am
With above method on MacBook Pro (Retina, 15-inch, Late 2013, gt750m), I got a mirrored spilt screen on my hp z27q. Any work around? How about on a hackintosh with a gtx 960? I only got 4k at the moment.
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