111 votes

GPU problem - Boot Hangs on Grey Screen

Background and explanations Please read all of this post at least once from start to finish before taking any action. All MacBook Pros from 2011 have a serious design defect. The thermal management ...
LаngLаngС's user avatar
  • 8,279
72 votes

MacBook Pro: How to disable discrete GPU permanently from EFI?

You can permanently disable discrete graphics card following next steps: UPDATE! Try to edit NVRAM variable from Single-User mode The procedure described in the steps 1-3 worked for me until macOS ...
Fernando N.'s user avatar
19 votes
Accepted

Machine Learning on external GPU with CUDA and late MBP 2016?

I could finally install Nvidia Titan XP + MacBook Pro + Akitio Node + Tensorflow + Keras I wrote a gist with the procedure, hope it helps https://gist.github.com/jganzabal/...
Julian's user avatar
  • 304
16 votes
Accepted

When using an external monitor, does a mid-2015 Retina Macbook Pro with only integrated graphics run cooler than one with discrete graphics?

The short answer appears to be: yes, 12 degrees C (22 degrees F) or more cooler. I got ahold of a custom-build Macbook Pro that has identical specifications except that it had no discrete graphics ...
abyrd's user avatar
  • 401
14 votes

Stop Chrome from switching to dedicated GPU

I was having an issue with gfxCardStatus not being able to switch to the Integrated Intel GPU because of a Google Chrome Helper task. My mid-2010 Macbook Pro has a bad discrete GPU so of course that ...
BrettGerry's user avatar
12 votes

MacBook Pro: How to disable discrete GPU permanently from EFI?

Your Dilemma I'm in full sympathy with your wish "save on battery and reduce heat, without paying the noise cost" of using the discrete graphics card inside a MacBook Pro. Warning Before you ...
Foliovision's user avatar
  • 1,041
12 votes

Monitor GPU performance on OSX

You can use Activity Monitor that comes with MacOS in Applications>Utilities Choose Window>GPU History or press ⌘4
fvlasie's user avatar
  • 123
12 votes

How does display scaling work on Mac

When you choose 'looks like 2560x1440' and that is not an integer scale factor of 4K (3840x2160), macOS creates a virtual display twice the size (i.e. 5120x2880). All software (OS and applications) ...
Gilby's user avatar
  • 10.9k
11 votes
Accepted

Disable SIP without recovery mode

Edit: to answer your actual question, you can't do it from anywhere except Recovery Mode, so anything you do must be done from there. Tested on a similar 4,1 upgraded to 5,1 [but I have a flashed ...
Tetsujin's user avatar
  • 116k
10 votes

MacBook Pro: How to disable discrete GPU permanently from EFI?

Your planned procedure is possible. Your planned procedure is not that difficult. Your planned procedure is not the best option. Why this route is suboptimal MacBook Pros will and have to switch to ...
LаngLаngС's user avatar
  • 8,279
10 votes

How can I toggle Automatic Graphics Switching using terminal?

The command sudo pmset -a gpuswitch n will set the graphics switching, with the following values for n: 2 is integrated gpu both on cable and battery 1 is dedicated gpu only with power connected; ...
benwiggy's user avatar
  • 35.7k
10 votes
Accepted

Can I flush, or release, my GPU memory?

I have found the answer to actually be 'yes' you can release (flush) the VRAM. Here's what worked for me: I have a hot corner (MacOS) set to turn the display off, and when I activate it, even just ...
v15's user avatar
  • 889
9 votes

Machine Learning on external GPU with CUDA and late MBP 2016?

I was able to get a NVIDIA GTX 1080 Ti working on the Akitio Node on my iMac (late 2013). I'm using a Thunderbolt 2 > 3 adapter, though on newer Macs you can use the faster TB3 directly. There are ...
Mattias Arro's user avatar
9 votes

Does the TouchBar have its own GPU, CPU, or Ram?

This answer may not get to the crux of what you're wanting to do, but I offer it because I think your question is one that will interest a lot of people. Apple’s Touch Bar MBP models actually use an ...
Monomeeth's user avatar
  • 64.6k
9 votes

Can I flush, or release, my GPU memory?

There has often been problems with AMD based GPUs and their reporting of video memory usage in iStat Menu. This has in the past been for example always reporting 100% usage, always reporting a ...
jksoegaard's user avatar
  • 77.8k
8 votes

Monitor GPU performance on OSX

Update: MacOS includes the in-built powermetrics command line tool which allows for access to varity of performance and power info. e.g. to obtain running GPU info every 5 seconds: sudo powermetrics --...
Pierz's user avatar
  • 3,667
8 votes

Disable SIP without recovery mode

This blind method worked for me: In order to disable or enable SIP (System Integrity Protection) without being able to see recovery mode and launch the terminal, you can use single-user recovery mode ...
fella's user avatar
  • 89
8 votes
Accepted

2015 MBP - how to force integrated graphics?

gfxcardstatus is no longer maintained but I recreated it for modern macOS: https://github.com/CodySchrank/gSwitch
FoundNil's user avatar
  • 246
7 votes

Stop Chrome from switching to dedicated GPU

I found this to work for me chrome Settings > Advanced > System > uncheck "Use hardware acceleration when available"
Dj Sam Omol's user avatar
7 votes
Accepted

iMac making strange electrical clicking noises

There are only a few components in an iMac that can make clicking noises. It's highly unlikely that it's your logic board or a component of your logic board, but the possibilities are: Power Supply ...
Allan's user avatar
  • 102k
7 votes
Accepted

Is Intel Iris 1536 MB ‘better’ than Intel HD Graphics 4000?

There are 3 types of mid 2014, two with integrated graphics & one with a discrete card. The integrated chip is Intel 5100 or 5200 so yes, well within spec, even if you don't have the dual-...
Tetsujin's user avatar
  • 116k
6 votes
Accepted

Can the 2016 15-inch MacBook Pro (with Touch Bar) drive 4 external monitors?

The 2016 15" MacBook Pro will support up to four external displays. You can have either of the following two options: Up to two 5K displays Up to four 4K displays Specifically per the tech specs of ...
Allan's user avatar
  • 102k
6 votes

Graphics performance on MacBook Pro 15 / 2015

First, can I trust this source? Any way to cross-check? Everymac.com should be considered a trusted source. This can be cross checked by looking at two sources: Apple website; tech specs of 2015 ...
Allan's user avatar
  • 102k
6 votes
Accepted

Early 2015 MacBook Air and two external monitors: how to do it and maximum resolution?

Just for posterity I'll answer my own question: After doing quite a bit of searching around, I eventually figured out that the easiest and cheapest way to accomplish this would be to use the StarTech ...
Bri Bri's user avatar
  • 2,436
6 votes

Is it possible to turn down the frequency on a LG 5K Ultrafine and will it help reduce GPU heat?

It's not possible to change the frequency and the physical resolution of this display. IMHO changing that will not lower the thermal load of your MBP, because once you connect an external display the ...
mspasov's user avatar
  • 6,392
6 votes

How does display scaling work on Mac

What happens is that the system essentially renders the image offscreen at a much higher resolution where you haven't got "a third of pixel" and similar. Then that image is downsampled to ...
jksoegaard's user avatar
  • 77.8k
5 votes

How to permanently disable (defective) graphics card in MacBook Pro?

If anyone is still looking for ways to do this, please check out this MacRumors forum post. I followed the steps and my 15" MacBook Pro 2011 (with a failed discrete AMD graphic card) is working ...
Phyo's user avatar
  • 191
5 votes

Disable SIP without recovery mode

It is possible to boot into Recovery with Single User Mode. To do this: Hold the Option (⌥) key during initial boot to get to the Startup Manager. While holding Command (⌘)-S, select the Recovery ...
larryone's user avatar
5 votes
Accepted

Does 2.8GHZ Mid 2015 MacBook Pro come with dual graphics as default?

To answer your question "Does the 2.8GHz model come with dual Intel/AMD graphics card or just Intel embedded graphics only?", the 2.8GHz model came both ways. The MacBook Pro (Retina, 15-inch, Mid ...
user3439894's user avatar
  • 58.7k
5 votes

Does the integrated Intel Iris Pro GPU support an external display?

The external graphics port(s) are literally wired to the discrete graphics chip. The only card that has access to the TB port is the AMD dedicated card. That's the same reason why you need the AMD ...
jeff's user avatar
  • 51

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