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

[RandomTech]

For your issue it sounds like you had no gpu acceleration, like when using nv_disable=1. When you updated to 10.11.4 the older version of the nvidia driver stopped working until you updated it with the newer version for 10.11.4. I think that the web driver will set the argument nv_disable=1 when it sees a incompatible version of OS x after doing a update and that your gpu is not compatible with the OS x default drivers. The flag will disable all acceleration including cuda and opencl. Once the web driver is updated and matches the new version of OS x, acceleration is enabled again. If you had a AppleGraphicsDisplayPolicy related black screen issue and used nv_disable=1 to boot, then you disabled cuda and opencl with the flag. With nv_disable=1 the system uses a very basic graphics driver for minimal graphics functionality. It sounds like you solved your opencl issue by fixing the black screen issue, updating the nvidia drivers and reenabling acceleration.

The other user's issue sounds like it was related to buggy cuda drivers and/or application builds that were lagging in functionality for 10.11.4. It looks like his issues were solved by updating drivers and software for better compatibility with 10.11.4.

When install OS X the only flags that works with my system are nv_disable=1 and GraphicsEnabler=No with intel onboard GPU disabled in BIOS, other than that no chance to get to the installer, even after OS X and post install.. But when I do install the latest compatible NVIDIA driver I replace those two flags with one flag which is nvda_drv=1.

Note: after install the web driver it forces system to restart as it should, but when I click to restart I always get a warning message like (Corrupted System Preferences Restart), I cannot read details because it goes fast and dark when screen is ready to restart.

Besides, issues when using Smudge Tool and Blur Tool on Photoshop CC 2015 (screenshots provided).

I do this since Yosemite 10.10.5 (August 2015) and non of those issues was presented not even on the new 2016 Yosemite update... Only 10.11 any build any sys def.

Edit: New OS X 10.11.5 and NVIDIA updates solved this issue.

 

[blazinsmokey]

According to Pike that binary patch only works for Intel HD, might be nice if you noted that.

 

[alez88]

didn't working for me.
with gtx 970 and smbios imac 17 , black screen on 10.11.4.
I don't have GPU injection via DSDT or SSDT but your app don't work for me

I tried to boot with nv_disable=1 and change smbios to imac 14.2 and work now

anyone can help me?

 

[saadme]

Thanks very much for this, the tool worked for me. I was using Mac Pro 3,1, the default, and had this screen blank issue, changed to iMac and it was fine. I tried patching config.plist as mentioned here :http://www.tonymacx86.com/threads/solving-nvidia-driver-install-loading-problems.161256/


<key>KextsToPatch</key>
<array>
<dict>
<key>Comment</key>
<string>(c)Pike R. Alpha</string>
<key>Find</key>
<data>
Ym9hcmQtaWQ=
</data>
<key>Name</key>
<string>AppleGraphicsDevicePolicy</string>
<key>Replace</key>
<data>
Ym9hcmQtaXg=
</data>
</dict>

but that didn't work, and would simply put be in a reboot loop. I booted using nv_disable=1 again, restored the original plist file, changed the definition to Mac Pro 6,1, then applied your patch and it works great.

I'm just wondering why patching my plist didn't work, and if the plist patch you have provided is different to the one found on this thread (http://www.tonymacx86.com/threads/solving-nvidia-driver-install-loading-problems.161256/).

I quite like the idea of not having to reinstall the patch everytime I install an update

 

[HolyMacrel]

Well, since I'm about out of options to try I guess I'll post the question here. I've been having the black screen issue for some time now on imac 11,3 definition. It was working fine, until one day when I was watching netflix and the screen went blank. Once I restarted, it began giving me the black screen at boot. I've tried several times over the last couple months to get it working, and practically everything has failed.

Here are the things I have tried:

• Changing to several other system definitions including iMac 14,2
• Changing to MacPro 6,1 and applying the patch
• Injecting GFX1, and then tried again using 6,1
• Patching the Apple policy with Clover
• and a few other ones I can't remember.

I use the iMac 11,3 definition because I have an i5 Lynnfield CPU, and it's the closest to my system. If anyone could look at my Config.plist, SSDT, and ioreg and point me in the right direction, I would be immensely grateful.

System Specs: Asus P7H55-m Pro mobo
i5 Lynnfield
EVGA GTX 970

 

[input_output]

Hi there,

i recently started a thread without knowing what the problem was and replies on that said thread seem to point me to this particular thread.

long story short, i feel its best if i ask first before poking ard where i shouldnt.
System booted up fine last night but then went black again this morning. weird thing is, i have already set system definitions to
MacPro3,1 since day one. (may need someones help to see my specs if its best for me to change to another system definition to better suit my hardware)

ive included screenshots. If you guys need any further info, id be glad to furnish them as best i can

 

[slim.jim]

Hi there,

i recently started a thread without knowing what the problem was and replies on that said thread seem to point me to this particular thread.

long story short, i feel its best if i ask first before poking ard where i shouldnt.
System booted up fine last night but then went black again this morning. weird thing is, i have already set system definitions to
MacPro3,1 since day one. (may need someones help to see my specs if its best for me to change to another system definition to better suit my hardware)

ive included screenshots. If you guys need any further info, id be glad to furnish them as best i can
View attachment 196026 View attachment 196027 View attachment 196028 View attachment 196029

The GTX 660 ti is a Kepler card so make sure you have Inject/Nvidia/False. In the screenshots the 1mb of VRAM is indicative that it is set to true. You may also need the Nvidia Web drivers since there is no graphics kext loaded.

 

[input_output]

The GTX 660 ti is a Kepler card so make sure you have Inject/Nvidia/False. In the screenshots the 1mb of VRAM is indicative that it is set to true. You may also need the Nvidia Web drivers since there is no graphics kext loaded.

After what i thought was the fix to get it working as it should. I now cant seem to get past the apple logo. It reboots abt two thirds of the way. Read up some of the solutions for that prob but cant seem to get it to work as well.

I managed to boot to my system and updated the nvidia drivers via the cuda system preferences. It booted fine again and i played ard in clover configurator to get the theme to not looked stretched (did some CsmVideoDxe driver install via clover configurator) Could that have messed things up?

I tried to boot from USB but still reboots. And when i used nv_disable=1 it hangs at grey screen with spinning beachball.

Here's what i managed to capture when in verbose mode. Ive tried multiple solutions that im afraid may be doing more harm than good.

 

[EV.forever]

Hi everyone,

I thought I'd start here before creating my own post. My motherboard and graphics card are both "official" CustoMac parts, and I've followed the guides here to the letter, but none of the Methods (1-3) listed under Problem 4 are working; the display goes to sleep every time.

I'd really like to use iMac 17,1 for any Intel Speed Shift optimizations that are present in OS X for Skylake, but I'm running out of options.

This is a fresh install of 10.11.5 with NVIDIA Web Driver 346.03.10f02.

 

[Pears]

Hi everyone,

I thought I'd start here before creating my own post. My motherboard and graphics card are both "official" CustoMac parts, and I've followed the guides here to the letter, but none of the Methods (1-3) listed under Problem 4 are working; the display goes to sleep every time.

I'd really like to use iMac 17,1 for any Intel Speed Shift optimizations that are present in OS X for Skylake, but I'm running out of options.

This is a fresh install of 10.11.5 with NVIDIA Web Driver 346.03.10f02.

If you find a solution please let us know!