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Black Screen with MacPro 6,1 or iMac 15 or iMac 17 System Definition

Joined
Jul 26, 2016
Messages
14
Motherboard
Gigabyte GA-Z170X-UD5 TH
CPU
Intel i6700k
Graphics
Gigabyte GTX970 Windforce
Mac
  1. iMac
  2. MacBook Air
  3. Mac Pro
Classic Mac
  1. iBook
  2. iMac
  3. PowerBook
Mobile Phone
  1. iOS
Everything is working for me except one thing. I have a dual-monitor setup (2 Dell screens connected over DP to my GTX970). Screen 1 is main screen (also for bios bootup) and screen 2 is secondary.

Steps:

1. I turn on my hackintosh
2. I get my bios screen
3. I get my clover screen
4. Apple logo and loading screen
5. My main screen (1) turns off and goes in power saving mode
6. Hackintosh boots with screen 2

Further observations:
  • When I shut down screen 1 and turn it on again, or when I plug and unplug the DP cable, screen 2 starts working immediately
  • When I let my hackintosh boot (= wait 30 seconds) and turn on both screens they work immediately
Any idea what is causing this and how I can fix it?

I am tried a Mac Pro 3,1 iMac 14,2 and iMac 17 profile but it made no difference, behavior is the same. My hackintosh boots straight into the NVIDIA web driver.
 
Joined
Aug 3, 2010
Messages
116
Motherboard
Gigabyte Z370 AORUS GAMING 7
CPU
i7 8700K
Graphics
GTX 1080 ti
Mac
  1. iMac
  2. MacBook Pro
  3. Mac mini
Mobile Phone
  1. Android
Hello All, not sure if this should go here, but...
I`m Trying to update an old Hack from Snow Leo to El Cap, but, I`m having a black screen if booting without nv_disable=1.

Hardware Specs:
Socket 1155
i3 2100
Gigabyte Q77M-D2H
geforce 9800 gt (DVI-D, HDMI, VGA)

IGPU Disabled.

Inject Nvidia= Enabled = Black Screen.
Inject Nvidia= Disabled = Reboot.
Inject Nvidia + Drivers = Enabled = Black Screen.
nv_disable =1 = Screen Works

System Definition was given by Clover = iMac 12,1

Thanks everyone!
 

slim.jim

Moderator
Joined
Dec 17, 2014
Messages
4,275
Motherboard
MSI Z97 Gaming 9 AC
CPU
i7-4790K
Graphics
RX 5700 XT
Mac
  1. MacBook Pro
Classic Mac
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Mobile Phone
  1. iOS
Hello All, not sure if this should go here, but...
I`m Trying to update an old Hack from Snow Leo to El Cap, but, I`m having a black screen if booting without nv_disable=1.

Hardware Specs:
Socket 1155
i3 2100
Gigabyte Q77M-D2H
geforce 9800 gt (DVI-D, HDMI, VGA)

IGPU Disabled.

Inject Nvidia= Enabled = Black Screen.
Inject Nvidia= Disabled = Reboot.
Inject Nvidia + Drivers = Enabled = Black Screen.
nv_disable =1 = Screen Works

System Definition was given by Clover = iMac 12,1

Thanks everyone!

What port are you using on your GPU?
 
Joined
Jul 2, 2016
Messages
341
Motherboard
GA-Z270-HD3
CPU
i7-7700K
Graphics
RX 580
Mac
  1. iMac
Classic Mac
  1. iMac
The MacPro6,1 and iMac15/17 perform special functions on their specific OEM GPUs/Displays. The MacPro6,1 unloads 1 GPU (with no ports) and leaves one functional for it's pseudo CrossFire function. The iMac15/17s apply a special EDID for their 5K displays.

The following snippet is taken from /System/Library/Extensions/AppleGraphicsControl.kext/Contents/PlugIns/AppleGraphicsDevicePolicy.kext/Contents/Info.plist:

Code:
...
<string>com.apple.driver.AppleGraphicsDevicePolicy</string>
<key>Config1</key>
<dict>
    <key>GFX1</key>
    <dict>
        <key>unload</key>
        <true/>
    </dict>
</dict>
<key>Config2</key>
<dict>
    <key>GFX0</key>
    <dict>
       <key>EDID</key>
       <dict>
           <key>0610ae02</key>
           <data>
           AP///////wAGEAOuAAAAAAwYAQS1
           PCJ4IsgFp1VLoCYMUFQAAAABAQEB
           AQEBAQEBAQEBAQEBAAAAEAAAAAAA
           AAAAAAAAAAAAAAAAEAAAAAAAAAAA
           AAAAAAAAAAAA/ABpTWFjCiAgICAg
           ICAgAAAAAAAAAAAAAAAAAAAAAAAA
           Ai0CAx6BcPoQAAASejH8eL3MApCI
           UdNo+hAA9fn6//8AAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAknATeQMAAwAUgG4BhP8TnwAv
           gB8APwtRAAIABAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAMeQ
           </data>
           <key>0610ae06</key>
           <data>
           AP///////wAGEAeuAAAAABsZAQS1
           PCJ4IAAAAAAAAAAAAAAAAAABAQEB
           AQEBAQEBAQEBAQEBAAAAEAAAAAAA
           AAAAAAAAAAAAAAAAEAAAAAAAAAAA
           AAAAAAAAAAAA/ABpTWFjCiAgICAg
           ICAgAAAAAAAAAAAAAAAAAAAAAAAA
           AaZwE3kDAAMAFIBuAYT/E58AL4Af
           AD8LUQACAAQAf4EY+hAAAQEAEnYx
           /HixmQIQiGLT+vj4/v//AAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAB3kA==
           </data>
           <key>0610ae0a</key>
           <data>
           AP///////wAGEAuuAAAAABoZAQS1
           PCJ4IAAAAAAAAAAAAAAAAAABAQEB
           AQEBAQEBAQEBAQEBAAAAEAAAAAAA
           AAAAAAAAAAAAAAAAEAAAAAAAAAAA
           AAAAAAAAAAAA/ABpTWFjCiAgICAg
           ICAgAAAAAAAAAAAAAAAAAAAAAAAA
           AaNwE3kDAAMAFIBuAYT/E58AL4Af
           AD8LUQACAAQAf4EY+hAAAQEAEnYx
           /Hix/wIQiGLT+vj4/v//AAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAAAAAAAAAAAAAAAAAAAAAAAAAAA
           AAARkA==
           </data>
           <key>index</key>
           <integer>0</integer>
       </dict>
       <key>unload</key>
       <false/>
...
            <key>ConfigMap</key>
            <dict>
...
   <key>Mac-42FD25EABCABB274</key>
   <string>Config2</string>
...
   <key>Mac-65CE76090165799A</key>
   <string>Config2</string>
...
   <key>Mac-B809C3757DA9BB8D</key>
   <string>Config2</string>
...
   <key>Mac-F60DEB81FF30ACF6</key>
   <string>Config1</string>
   <key>Mac-FA842E06C61E91C5</key>
   <string>Config2</string>
...

For non-Apple hardware, This can cause your GPU not to send a signal to your monitor (black screen) at boot while using the MacPro6,1 (Mac-F60DEB81FF30ACF6 board-id), or iMac15 (Mac-42FD25EABCABB274 or Mac-FA842E06C61E91C5 board-ids), or iMac17 (Mac-65CE76090165799A or Mac-B809C3757DA9BB8D board-ids) system definitions. If this is happening to you, your system will still be responsive but have no signal coming from the GPU's ports to the monitor.

How to verify that your system is functional except for video:

1. Share the screen from another Mac on your network to control the system and verify that it is functional and responsive (you must have Screen Sharing enabled). NOTE: You should be able to boot using nv_disable=1 to enable screen sharing if you have a Nvidia GPU.

2. Use a keyboard shortcut to verify that the system is responsive:
• On a Apple keyboard, the eject key will open and close my optical drive.
• On a Apple keyboard, the play button will launch iTunes and hitting it a 2nd time will start playback depending on what state the app was in when I quit it last.
• On a Apple keyboard, control + eject will bring up the the "Shut Down" dialog window with the default button being "Shut Down". When you hit enter/return it causes the default button to activate and the system will shut down properly.
• Holding down control + option + command and then pressing the power button on your case or mobo quickly (less than 1 second) will cause open apps to quit and the system will shut down properly. NOTE: Holding down the power button for 5 seconds will cause the system to hard power off and this is not proof of response from OS X (this is how you force a frozen system to power off).

If your system is unresponsive (frozen) with a black screen, the fixes outlined here probably won't help you.

Fixes:

PikeRAlpha outlined a fix for MacPro6,1 in his blog post on May 1st, 2014 where he changed Config1 to none in the above mentioned info.plist. This seems to work for the iMac15/17s as well by changing Config2 to none.


Many people have been looking for a Clover "on the fly" info.plist patch to be done at every boot but it fails because Clover's info.plist patches are only visible in the kext caches and it doesn't change the actual info.plist file. It seems that more than one kexts are reading the ConfigMap from the info.plist in it's actual file path, so putting "none" in the kext cache changes nothing. This also makes it impossible to use the dummy kext method. Even if you get a dummy kext with a patched info.plist to load instead of the original kext, the info.plist will still be read from the original kext's file path.

Pike came to the rescue (sort of) again on November 23rd, 2015 with a Clover "on the fly" binary patch for the AppleGraphicsDevicePolicy.kext
Code:
            <dict>
                <key>Comment</key>
                <string>AppleGraphicsDevicePolicy (board-id) Patch (c) Pike R. Alpha</string>
                <key>Find</key>
                <data>
                Ym9hcmQtaWQ=
                </data>
                <key>Name</key>
                <string>AppleGraphicsDevicePolicy</string>
                <key>Replace</key>
                <data>
                Ym9hcmQtaXg=
                </data>
            </dict>
This patch changes board-id to board-ix in the binary file but only seems to give the desired result if you have 1 discreet GPU. I have have 2. With 2 GPUs, one always unloads and it's unpredictable which one will work. Some people with only 1 GPU also have issues with this patch.

The easiest fully working solution I could come up with is a AppleScript app (AGDPfix.app) that patches the OEM kext's info.plist via shell scripts. OS X updates usually cause the kext to be overwritten/updated so the app must be run again after updating OS X, but it's a lot easier than manually patching the info.plist every time. I originally created v1.0 for MacPro6,1 only but have now updated it to v1.1 for use with iMac15/17 sys defs as well. Feel free to download and use the app attached below.
NOTE: You will need to use the boot argument kext-dev-mode=1 for 10.10 Yosemite.

For those of you using MacPro6,1 and willing to get a little more geeky, assigning the name GFX1 to your GPU in your ACPI tables (DSDT or SSDT) will also work without the need to patch any kexts and you won't need to worry about re-patching anything after OS X updates unless Apple changes the device policy again (credit : dgsga and furter).

In this pic from IORegistryExplorer you can see the AppleGraphicsDevicePolicyControlClient loaded on my second GPU (GTX 980) installed in PCI slot 4 (NPE7):
175050-agdp-loaded.png

In this state, it will not send a video signal from any of it's ports.

In the next pic you can see that I have injected my GTX 980 as GFX1 in NPE7 and AGDPCC is no longer loaded to it:
175051-agdp-not-loaded.png

Now all ports are functional. It's also worth noting that I have my 1st GPU (GTX Titan X) injected as GFX1 as well.

If you currently have GPU injection via DSDT or SSDT, it's as easy as changing the name. Open your DSDT or SSDT in your editor of choice (I prefer MaciASL) and change GFX0, PXSx, PEGx, or whatever it's name currently is to GFX1. Click compile and save it. If you don't currently have have your GPU injected in your DSDT or a SSDT, see this Guide to create one or more SSDTs for your GPU/s.

You should also read this post if you feel you might be having other Nvidia Web Driver related issues: Solving NVIDIA Driver Install & Loading Problems However, AGDPfix.app or naming the GPU to GFX1 will solve problem 4.
gtx cards can be activated after os 10.12 final version release by using this method??thank you
 
Last edited by a moderator:

slim.jim

Moderator
Joined
Dec 17, 2014
Messages
4,275
Motherboard
MSI Z97 Gaming 9 AC
CPU
i7-4790K
Graphics
RX 5700 XT
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  1. MacBook Pro
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gtx cards can be activated after os 10.12 final version release by using this method??thank you

No one will know that till it is released.
 
Joined
Aug 4, 2012
Messages
41
Motherboard
GA-Z170X-UD5 TH
CPU
i7-6700K
Graphics
Radeon RX 580
Mac
  1. iMac
Hello guys/gals, hope all is well. I built a z170x-ud5 th with a geforce gtx 970 I have everything working but the graphic card. it boots in perfect, no black screen etc. in about this mac it shows up as
NVIDIA Chip Model 7 MB. The only way it gets recognized is if i use inject nvidia in clover config but it will say gtx 970 0mb. Im using the 17.1 def and the nvda_drv=1 with the NVIDEA_WebDriver-346.03.15f02 plus the cuda (all boots well it just doesn't recognize card). Any help would be greatly appreciated I don't know what to do next and don't want to start experimenting on my own with code and mess up my system Thanks Guys!!
 
Joined
Jul 2, 2016
Messages
341
Motherboard
GA-Z270-HD3
CPU
i7-7700K
Graphics
RX 580
Mac
  1. iMac
Classic Mac
  1. iMac
No one will know that till it is released.
HI, SOMEONE POST IT : Updated successfully to PB4 via the App Store update. Had my monitors going to sleep after booting the first time, so booted with nv_disable=1 and applied the AGDPFix for Nvidia cards and rebooted. Both monitors working fully at 4K @60hz with full acceleration.
 
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