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[APP] NVIDIA eGPU support for High Sierra (NVIDIAEGPUSupport)
 

[APP] NVIDIA eGPU support for High Sierra (NVIDIAEGPUSupport)  

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quangquach
(@quangquach)
Active Member
Joined: 2 years ago
 
Posted by: nombrescreeno

Late to this party. Could someone explain the current major issue with NVIDIA eGPUs and MacOS?

Is it that drivers aren't released with each update of Mac OS, and so we have to wait for a new release to get them working?

It sounds like they are more or less plug and play on the Bootcamp side of things (sans issues with error 12 and boot up).

I think the problem is none of the current Mac product lines is shipped with NVIDIA cards, the last Macbook pro model having Nvidia card is the 2014 model, AFAIK. Hence, the NVIDIA driver support depends solely on NVIDIA. The macOS with eGPU market is obviously not in Nvidia's top priority list compared with Windows and desktop ones, so don't expect Nvidia web driver will always up-to-date with every latest macOS patch.

To be worse, Apple shows no interest to support Nvidia eGPU, and their recent External Graphics Development Kit is AMD support only. It's caused frustrated for customers who want to take the advantages of CUDA technology. Hopefully, in the future, with this vibrant community, they will change their mind and start to support Nvidia eGPU.

Macbook Pro 2015 15' AMD M370X, OSX 10.13.6, Akitio Node with Nvidia GTX 1060 6GB


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PastorDame
(@pastordame)
Active Member
Joined: 2 years ago
 

Hey all - I'm new to the party here and trying to get my eGPU up and running. Here is the gear that I'm working with and what I've done so far.

 

The Gear:

Computer: 2017 27" iMac (Radeon Pro 575)

eGPU: Sonnet BreakAway Box 550

Card: nVIDEA GTX Titan X (Maxwell)

 

What I've tried so far:

- I have walked through the steps of install Web Drivers, reset into Recovery Mode, Disable SIP, reboot, install NVDAEGUSupport-v4, rest into Recovery Mode, Enable SIP, reboot. 

Now, two interesting things have happened. Thing #1 is that I have gotten the iMac to recognize the eGPU and card, but it only runs off of an attached display (BENQ ZOWIE 27") . When in that mode, my system is super slow and my iMac display is dark BUT it sees it. Thing #2 is that if I unplug the eGPU at any point while the computer is powered on, it goes to a black crash screen.  

 

I was trying to walk through J. Navarro's suggestions, but I'm not terribly well versed in Terminal terminology, so I didn't know how to execute this step

  • as root run “nvram nvda_drv=1” and “touch /System/Library/Extensions”. 

Well - that's where I'm at. Any help would be greatly appreciated!

System: 27" iMac 5K (2017), dGPU - Radeon Pro 575
eGPU: SONNET BreakAway Box 550 w/ Nvidia GTX Titan X (Maxwell) or Powercolor Red Devil AMD Radeon RX580. BenQ Zowie XL (1440p @ 144Hz)


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PastorDame
(@pastordame)
Active Member
Joined: 2 years ago
 

*Update 

I now have both of my displays working, but I'm not sure that my eGPU is boosting my internal display. Any suggestion on how to measure that?

 

(side note: I am using a TB3 cable from OWC)

System: 27" iMac 5K (2017), dGPU - Radeon Pro 575
eGPU: SONNET BreakAway Box 550 w/ Nvidia GTX Titan X (Maxwell) or Powercolor Red Devil AMD Radeon RX580. BenQ Zowie XL (1440p @ 144Hz)


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quangquach
(@quangquach)
Active Member
Joined: 2 years ago
 
Posted by: PastorDame

*Update 

I now have both of my displays working, but I'm not sure that my eGPU is boosting my internal display. Any suggestion on how to measure that?

 

(side note: I am using a TB3 cable from OWC)

I think you may try to start some benchmark programs on both displays and compare differences. Starting the benchmark without the eGPU plugged in will also help.

Macbook Pro 2015 15' AMD M370X, OSX 10.13.6, Akitio Node with Nvidia GTX 1060 6GB


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PastorDame
(@pastordame)
Active Member
Joined: 2 years ago
 

 

I think you may try to start some benchmark programs on both displays and compare differences. Starting the benchmark without the eGPU plugged in will also help.

I was able to run the benchmark on that screen with success. It certainly showed different results from my previous tests. Now I know, at the very least, that it is functioning. Thank you!

System: 27" iMac 5K (2017), dGPU - Radeon Pro 575
eGPU: SONNET BreakAway Box 550 w/ Nvidia GTX Titan X (Maxwell) or Powercolor Red Devil AMD Radeon RX580. BenQ Zowie XL (1440p @ 144Hz)


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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 
Posted by: PastorDame

 

What I've tried so far:

- I have walked through the steps of install Web Drivers, reset into Recovery Mode, Disable SIP, reboot, install NVDAEGUSupport-v4, rest into Recovery Mode, Enable SIP, reboot. 

 

For clarification, when you re-enabled SIP you made sure to do it without kext signing correct? the command is "csrutil enable –without kext"

 

Posted by: PastorDame

*Update 

I now have both of my displays working, but I'm not sure that my eGPU is boosting my internal display. Any suggestion on how to measure that?

 

(side note: I am using a TB3 cable from OWC)

You can use something like iStat Menus to monitor what gpu is being used. Also, make sure to set the external monitor to the default monitor, then it will accelerate both the external and the internal screen. (System Preferences > Displays > Arrangement > Drag the white menu bar from the top of the internal screen to the top of the external screen in that window.)

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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j.navarro
(@j-navarro)
Active Member
Joined: 2 years ago
 
Posted by: PastorDame

Hey all - I'm new to the party here and trying to get my eGPU up and running. Here is the gear that I'm working with and what I've done so far.

 

The Gear:

Computer: 2017 27" iMac (Radeon Pro 575)

eGPU: Sonnet BreakAway Box 550

Card: nVIDEA GTX Titan X (Maxwell)

 

What I've tried so far:

- I have walked through the steps of install Web Drivers, reset into Recovery Mode, Disable SIP, reboot, install NVDAEGUSupport-v4, rest into Recovery Mode, Enable SIP, reboot. 

Now, two interesting things have happened. Thing #1 is that I have gotten the iMac to recognize the eGPU and card, but it only runs off of an attached display (BENQ ZOWIE 27") . When in that mode, my system is super slow and my iMac display is dark BUT it sees it. Thing #2 is that if I unplug the eGPU at any point while the computer is powered on, it goes to a black crash screen.  

 

I was trying to walk through J. Navarro's suggestions, but I'm not terribly well versed in Terminal terminology, so I didn't know how to execute this step

  • as root run “nvram nvda_drv=1” and “touch /System/Library/Extensions”. 

Well - that's where I'm at. Any help would be greatly appreciated!

Hi,

One way to run command line commands as root is as follows:

  • open a Terminal program (in Applications/Utilities), then type:
  • sudo nvram nvda_drv=1
  • sudo touch /System/Library/Extensions
  • exit

Cheers, -josé

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dream3
(@dream3)
Estimable Member
Joined: 3 years ago
 
Posted by: ricosuave0922
Posted by: PastorDame

 

What I've tried so far:

- I have walked through the steps of install Web Drivers, reset into Recovery Mode, Disable SIP, reboot, install NVDAEGUSupport-v4, rest into Recovery Mode, Enable SIP, reboot. 

 

For clarification, when you re-enabled SIP you made sure to do it without kext signing correct? the command is "csrutil enable –without kext"

 

Posted by: PastorDame

*Update 

I now have both of my displays working, but I'm not sure that my eGPU is boosting my internal display. Any suggestion on how to measure that?

 

(side note: I am using a TB3 cable from OWC)

You can use something like iStat Menus to monitor what gpu is being used. Also, make sure to set the external monitor to the default monitor, then it will accelerate both the external and the internal screen. (System Preferences > Displays > Arrangement > Drag the white menu bar from the top of the internal screen to the top of the external screen in that window.)

How do I use iStat to check the GPU? I still haven't realized what to look for.

MacOS: 15" Retina Macbook Pro 2015 Iris Pro only
Windows 10: Tornado F5 laptop with discrete GTX 1060
eGPU: GIGABYTE RX 580


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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 

Just look at the Graphics cards in the GPU section and watch the activity. If nothing is happening on your nvidia card and its all on the Radeon Pro, then its not working. 

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dream3
(@dream3)
Estimable Member
Joined: 3 years ago
 
Posted by: ricosuave0922

Just look at the Graphics cards in the GPU section and watch the activity. If nothing is happening on your nvidia card and its all on the Radeon Pro, then its not working. 

Oh I see. I found my 1080 there! What's the difference between Memory and Processor fields?

MacOS: 15" Retina Macbook Pro 2015 Iris Pro only
Windows 10: Tornado F5 laptop with discrete GTX 1060
eGPU: GIGABYTE RX 580


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LackingUtility
(@lackingutility)
Active Member
Joined: 2 years ago
 
Posted by: ricosuave0922

You can use something like iStat Menus to monitor what gpu is being used. Also, make sure to set the external monitor to the default monitor, then it will accelerate both the external and the internal screen. (System Preferences > Displays > Arrangement > Drag the white menu bar from the top of the internal screen to the top of the external screen in that window.)

Thanks! That solved my problem from before:

Posted by: LackingUtility

2) Cinebench R15 indicates that I'm running off the internal AMD Radeon R9, and the performance test seems to confirm that. Similarly, the system overview shows just the integrated Intel graphics and AMD Radeon, and not the GTX 1060. And while the System Report shows the 1060 and shows the displays connected to it, the display report suggests that I'm actually still using the Radeon.

Any thoughts?

 Now, everything properly shows the GTX 1060, and Cinebench confirms it, with a 62.89 fps test score.

Before and after:

Screen Shot 2017 12 08 at 1.33.33 PM
Screen Shot 2017 12 05 at 1.22.46 PM

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italianorge
(@italianorge)
New Member
Joined: 3 years ago
 

Hi,

I have a macbook pro 2016 15" touch with a Radeon 460 and an AORUS gambol GTX1070 . I followed all the steps but the external display a Samsung UHD 24" remain black and the eGPU silent...

Any tips? 

Thanks

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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(@fellar031)
Eminent Member
Joined: 2 years ago
 
Posted by: ricosuave0922
Posted by: PastorDame

 

What I've tried so far:

- I have walked through the steps of install Web Drivers, reset into Recovery Mode, Disable SIP, reboot, install NVDAEGUSupport-v4, rest into Recovery Mode, Enable SIP, reboot. 

 

For clarification, when you re-enabled SIP you made sure to do it without kext signing correct? the command is "csrutil enable –without kext"

 

Posted by: PastorDame

*Update 

I now have both of my displays working, but I'm not sure that my eGPU is boosting my internal display. Any suggestion on how to measure that?

 

(side note: I am using a TB3 cable from OWC)

You can use something like iStat Menus to monitor what gpu is being used. Also, make sure to set the external monitor to the default monitor, then it will accelerate both the external and the internal screen. (System Preferences > Displays > Arrangement > Drag the white menu bar from the top of the internal screen to the top of the external screen in that window.)

hey bro, what doest kext means?

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LackingUtility
(@lackingutility)
Active Member
Joined: 2 years ago
 
Posted by: italianorge

Hi,

I have a macbook pro 2016 15" touch with a Radeon 460 and an AORUS gambol GTX1070 . I followed all the steps but the external display a Samsung UHD 24" remain black and the eGPU silent...

Any tips? 

Thanks

Have you tried leaving the eGPU unplugged until reaching the login screen, and then plugging it in?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 
Posted by: fellar031
hey bro, what doest kext means?

think driver on windows.

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LackingUtility
(@lackingutility)
Active Member
Joined: 2 years ago
 
Posted by: fellar031

 

hey bro, what doest kext means?

Kernel Extension. Officially, they are "dynamically loaded bundles of executable code that run in kernel space." In practice, they tend to be device drivers, network filters, or file systems. And for us, the important one is the device driver - basically, running "csrutil enable --without kext" says "enable most of system integrity protection, but don't require signed kernel extensions, so that I can run this unsigned Nvidia driver."

Details here:https://developer.apple.com/library/content/documentation/Darwin/Conceptual/KEXTConcept/KEXTConceptIntro/introduction.htm l" target="true">  https://developer.apple.com/library/content/documentation/Darwin/Conceptual/KEXTConcept/KEXTConceptIntro/introduction.html

https://forums.developer.apple.com/thread/17452

 

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italianorge
(@italianorge)
New Member
Joined: 3 years ago
 
Posted by: LackingUtility
Posted by: italianorge

Hi,

I have a macbook pro 2016 15" touch with a Radeon 460 and an AORUS gambol GTX1070 . I followed all the steps but the external display a Samsung UHD 24" remain black and the eGPU silent...

Any tips? 

Thanks

Have you tried leaving the eGPU unplugged until reaching the login screen, and then plugging 

Yes, I tried everything.

Now the Aourus led and fan starts and the laptop is receiving power but there are no signs of the GPU being recognized

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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monotones
(@monotones)
New Member
Joined: 2 years ago
 

Hi,

I'm unable to get my Macbook Pro to work with the GTX 1050ti card. 

Result: I only get the card listed as "Nvidia Chip Model" in System Information and when I log out I get a blank screen. If I remove the cable there's a hard crash. I've tried with the graphics card connected to a monitor (displayport to cinema display) and without external display connected.

I've tried all the steps from the first post. I don't know how to "remove/undo any Info.plist modifications" though.

Any ideas? Thank you.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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(@fellar031)
Eminent Member
Joined: 2 years ago
 

hello is anyone knowing how to control the screen when I plug HDMI Dummy into GPU card? this what happens 

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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 

Make sure you use Disable Monitor app to set resolution of the headless adapter and the internal screen the same. In System Preferences > Display > Arrangement hold option and drag the two windows on top of each other. This will mirror them and accelerate the laptop screen with the eGPU.

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shirazigs
(@shirazigs)
Active Member
Joined: 2 years ago
 

Hi guys. I've just installed nvidia-egpu-v4.zip on High Sierra 10.13.2. just wanted to say thanks. It was a big pain without eGPU. I won't upgrade my macOS anymore. 

High Sierra 10.13.3
iMac (Retina 5K, 27-inch, Late 2014)
eGPU NVIDIA GeForce GTX 980 Ti
AKiTiO Thunder 2 Box
750W Power Supply Thermaltake
Second Monitor: LG 27MU67


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(@fellar031)
Eminent Member
Joined: 2 years ago
 
Posted by: ricosuave0922

Make sure you use Disable Monitor app to set resolution of the headless adapter and the internal screen the same. In System Preferences > Display > Arrangement hold option and drag the two windows on top of each other. This will mirror them and accelerate the laptop screen with the eGPU.

hey bro, i have set them. It works with nvidia gtx 1050ti. However when i did benchmark, gtx 1050ti doesnt recognize it. It just come out in system but only the intel HD working on that.

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quangquach
(@quangquach)
Active Member
Joined: 2 years ago
 
Posted by: monotones

Hi,

I'm unable to get my Macbook Pro to work with the GTX 1050ti card. 

Result: I only get the card listed as "Nvidia Chip Model" in System Information and when I log out I get a blank screen. If I remove the cable there's a hard crash. I've tried with the graphics card connected to a monitor (displayport to cinema display) and without external display connected.

I've tried all the steps from the first post. I don't know how to "remove/undo any Info.plist modifications" though.

Any ideas? Thank you.

System Preferences -> Energy Saver -> Untick "Automatic Graphics Switching" 

Macbook Pro 2015 15' AMD M370X, OSX 10.13.6, Akitio Node with Nvidia GTX 1060 6GB


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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 
Posted by: fellar031
Posted by: ricosuave0922

Make sure you use Disable Monitor app to set resolution of the headless adapter and the internal screen the same. In System Preferences > Display > Arrangement hold option and drag the two windows on top of each other. This will mirror them and accelerate the laptop screen with the eGPU.

hey bro, i have set them. It works with nvidia gtx 1050ti. However when i did benchmark, gtx 1050ti doesnt recognize it. It just come out in system but only the intel HD working on that.

In that same arrangement page, drag the white menu bar at the top to the headless monitor first then do the option drag the monitor on top of the other to mirror them. 

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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 
Posted by: monotones

Hi,

I'm unable to get my Macbook Pro to work with the GTX 1050ti card. 

Result: I only get the card listed as "Nvidia Chip Model" in System Information and when I log out I get a blank screen. If I remove the cable there's a hard crash. I've tried with the graphics card connected to a monitor (displayport to cinema display) and without external display connected.

I've tried all the steps from the first post. I don't know how to "remove/undo any Info.plist modifications" though.

Any ideas? Thank you.

The most successful method for me is to boot the computer with the eGPU unplugged. When you reach the login screen plug it in and wait. The screen should freeze up, or give you a spinning icon, or go black and come back, usually takes about 5-10 seconds. Then the external monitor comes on as well, then log in.

 

logging out sometimes locks up the computer for me so rebooting and pluggin in at the login screen is the most reliable method for me. 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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italianorge
(@italianorge)
New Member
Joined: 3 years ago
 
Posted by: italianorge
Posted by: LackingUtility
Posted by: italianorge

Hi,

I have a macbook pro 2016 15" touch with a Radeon 460 and an AORUS gambol GTX1070 . I followed all the steps but the external display a Samsung UHD 24" remain black and the eGPU silent...

Any tips? 

Thanks

Have you tried leaving the eGPU unplugged until reaching the login screen, and then plugging 

Yes, I tried everything.

Now the Aourus led and fan starts and the laptop is receiving power but there are no signs of the GPU being recognized

Any ideas? Thanks

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 

Double check that you followed all the steps in the first post correctly. Make sure sip is enabled, install Nvidia drivers, disable sip, install eGPU enabler, plug in eGPU at login screen and wait about 10 seconds. Screen should go black or freeze up or something and then come back and the external monitor should come on. Then login.

Check system profiler and report what is listed under graphics and thunderbolt. 

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Mark
 Mark
(@mark)
Eminent Member
Joined: 3 years ago
 

Thanks for this, I finally got my 1080 working on my 2016 TB 13". I am still having horrible lag with 4k video, as I used to with NVIDIA cards back in 10.12, so it's back to my RX480.

 

2016 TB 13" MBP

Sonnet III-D with SEL upgrade card

NVIDIA GTX 1080 Founder's Edition, with stock clocks

MacOS 10.13.2 with EGPU setup installed as per instructions

2016 13" MBP with Touch Bar
Sonnet III-D modified with Sonnet SE1 TB3 Upgrade Card and 600W PSU
MSI RX Vega 56 Air Boost OC
OS X 10.12.4


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(@fellar031)
Eminent Member
Joined: 2 years ago
 

hello, i want to inform that this driver was detecting my eGPU. however, when i am trying to play on steam games. i already moved the game with spectacle into my headless HDMI, my eGPU doesn't work on that. here is the picture: 

Screenshot 20171210 231532

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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 
Posted by: fellar031

hello, i want to inform that this driver was detecting my eGPU. however, when i am trying to play on steam games. i already moved the game with spectacle into my headless HDMI, my eGPU doesn't work on that. here is the picture: 

Screenshot 20171210 231532

Spectacle never worked for me. Instead make the headless adapter the default display by dragging the menu bar to it on the System Preferences > Display > Arrangement tab. Then hold option and drag the two screens on top of each other to mirror them. Then you will be using the GTX instead. 

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AussieFiveFingers
(@aussiefivefingers)
New Member
Joined: 2 years ago
 

Hello peoples,

First off thank you for all the help you guys have provided in the forum, it has been very helpful getting my MPB 15" 2016 with TB Pro 460 using Aorus eGPU with GTX 1070, external 4K monitor Acer RT280K. I had this running without issue on Sierra, however I just upgraded to High Sierra and was able to get the monitor and Aorus to work, but I am getting issues I never had in Sierra.

Problem is I am now getting odd banding issues when playing games like WOW of even just watching Netflix. Seems to be mainly on darker backgrounds. Resolution does not change nor do I get artefacts. However when the the background changes and it corrects itself, the screen brightness will flicker a bit, like its try to sync. 

This never happened in Sierra, only in High Sierra. Now at first I did upgrade from Sierra to High Sierra, however as of yesterday I did a clean install of High Sierra and did not load any apps except for necessary drivers and WOW. I still get the banding, just not as pronounced. It is annoying, but workable. I am hoping it is just a driver issue which will be fix in the next update, but I may bite the bullet and go back to Sierra.

Anyone else having this issue?  Pictures below

 

With Banding:

[img] [/img]

Without Banding:

[img] [/img]

System:

[img] [/img]

 

 

 

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fishblimp
(@fishblimp)
New Member
Joined: 2 years ago
 
Posted by: fishblimp

Got my MacBook Pro 15" (2016 w/ touchbar) + Sonnet Breakaway Box + Asus GeForce GTX 1060 + Samsung U28E590 + Belkin Thunderbolt 3 Cable to work after doing the process of booting up without being connected to the breakaway box, then logging out, logging back in - it works!

 

 

So, after updating to High Sierra 10.13.2, downloading and installing nvidia-egpu-v4 and applying the latest Nvidia web driver (378.10.10.10.25.102), my GTX 1060 is no longer being seen and I can no longer get it to work. 

Is anyone else having issues since installing 10.13.2?

 

 

MacBook Pro (15-inch, 2016 running 10.13.6, Sonnet Breakaway Box 350, Asus GeForce GTX 1080 Ti Turbo 11GB, running macOS-eGPU.sh (v1.6), NVIDEA driver 387.10.10.10.40.105, CUDA Driver 410.130


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(@fellar031)
Eminent Member
Joined: 2 years ago
 
Posted by: ricosuave0922

Spectacle never worked for me. Instead make the headless adapter the default display by dragging the menu bar to it on the System Preferences > Display > Arrangement tab. Then hold option and drag the two screens on top of each other to mirror them. Then you will be using the GTX instead. 

have you play with a steam game ? is it working? 

can you explain more about this explanation? "Then hold option and drag the two screens on top of each other to mirror them. Then you will be using the GTX instead" 

cheers, Bro!

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external
(@external)
New Member
Joined: 2 years ago
 

MBP mid 2014 2,8 GHZ Retina GT 750M

10.13.1 17B1003

nvidia-egpu-v3-1013-1.zip  WebDriver-378.10.10.10.20.109.pkg

Aktio Node

Nvidia GTX 1080ti aorus waterforce

Since trying to use egpu on high sierra with this configuration in 10.13.0 - 10.13.1 and nvidia-egpu-v1 - v3 I have been encountering always the same problem with not being able to change screen brightness, crashes from sleep or log-out or infinite boot loop error after switching back to OSX Default graphics driver through the Nvidia Driver Manager in the menu bar. After reinstalling the system a couple of times I found that the easiest way was to start the unusable MBP into target mode, then connect to another Mac with High Sierra installed (important because of AFPS) and to manually delete the NVDAEGPUSupport.kext.

Are there any ways to have a egpu / MacBook Pro system working in a usable manner. A system that doesn’t have any caveats like crashing on sleep, not adjustable screen brightness, boot loop error etc.

I found the rastafabi egpu enabler the easiest and most stable to use up to now, but I need to work on High Sierra. And as far as I understand the „hacks“ we are currently using are just some scripts, that do some boot settings that are saved to the pvram. Could someone explain what exactly these settings are, or what they provoke. That would help me to understand all the problems and caveats that appear with NVDAEGPUSupport.kext .

And a last question I have, why isn’t it possible to hotplug an external graphics card on high Sierra ? I can hot plug an akitio node, but that doesn’t show the egpu graphics card inside. 

Thanks!

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ricosuave0922
(@ricosuave0922)
Trusted Member
Joined: 2 years ago
 
Posted by: fellar031

have you play with a steam game ? is it working? 

can you explain more about this explanation? "Then hold option and drag the two screens on top of each other to mirror them. Then you will be using the GTX instead" 

cheers, Bro!

Yes it works with steam games. 

Ecactly what I said, go to System Preferences, then Display, then the Arrangement tab. On that screen you will see two monitors the one with the white menu bar at the top is the default display. Drag the white bar to the headless display on that tab. Then hold the option key and drag that screen on top of the other one. That will turn on mirroring. 

 

https://support.apple.com/en-us/HT202351

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(@fellar031)
Eminent Member
Joined: 2 years ago
 
Posted by: ricosuave0922

Yes it works with steam games. 

Ecactly what I said, go to System Preferences, then Display, then the Arrangement tab. On that screen you will see two monitors the one with the white menu bar at the top is the default display. Drag the white bar to the headless display on that tab. Then hold the option key and drag that screen on top of the other one. That will turn on mirroring. 

 

https://support.apple.com/en-us/HT202351

So did you tick the mirror display?

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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