Many 15-inch MacBook Pro notebooks have two graphics processors (GPU)—a discrete GPU and an integrated GPU. The discrete GPU provides substantial graphics performance but uses more energy. The integrated GPU optimizes battery life by using less energy.
Check if the discrete or integrated GPU is in use
From what I understand, it's not the Mac Pro, it's the graphics card that needs to be flashed so that it's 'Apple approved' For example, on MacUpgrades, they list an Saphire Radeon RX 580 with 8GB RAM. It has been flashed to work on the Mac Pro 2008 (MacPro 3,1) - Mac Pro 2012 (MacPro5,1) models. Oct 08, 2014 Apple computers: Troubleshooting issues with video on internal or external displays. Reset the system. You can reset the Mac's parameter RAM and SMC. Reset the resolution. Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video: Start up in Safe.
- Mar 05, 2019 Many 15-inch MacBook Pro notebooks have two graphics processors (GPU)—a discrete GPU and an integrated GPU. The discrete GPU provides substantial graphics performance but uses more energy. The integrated GPU optimizes battery life by using less energy.
- To allow a boot screen for your Apple Mac Pro. This will allow your video card to see the boot screen in the initial boot-up process. Service to flash your video card. I also can flash Titan Ridge Thunderbolt cards.
To see which graphics cards are in use, choose Apple () menu > About this Mac. The graphics cards currently in use appear next to Graphics. Learn which integrated GPUs your Mac might have.
Check if an app is using the dedicated GPU
To see if an app is using the higher-performance discrete GPU, open Activity Monitor and click the Energy tab. If you don't see the Requires High Perf GPU column, your computer only has one graphics processor.
In this example, iMovie and Final Cut Pro are using the higher-performance discrete GPU:
Learn more
Here are a few examples of apps and accessories that use the higher-performance discrete GPU:
- iMovie
- Adobe Photoshop and Adobe InDesign
- An external display
Learn how to use an external graphics processor (eGPU) with your Mac.
Learn how to set the graphics performance on your MacBook Pro or MacBook Pro with Retina display computer.
Hi urbanexus,
It sounds like if it boots to a pixelated screen you need to reboot to make it normal again. As screen settings are held it PRAM, try resetting that.
Reset the system
You can reset the Mac's parameter RAM and SMC.
How To Flash A Video Card For Mac Pro Video Editing
Reset the resolution
How To Flash A Video Card For Mac Pro 2012
Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
How To Flash Graphics Card For Mac Pro
- Start up in Safe Mode.
- From the Apple () menu, choose System Preferences.
- Choose Displays
from the View menu to open the preferences pane. - Select any resolution and refresh rate that your display supports.
- Restart your computer.
- Shut down your Mac.
- Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4.
- Turn on your Mac.
- Immediately press and hold the Option-Command-P-R keys. You must press this key combination before the gray screen appears.
Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time. - Release the keys.
Resetting PRAM may change some system settings and preferences. Use System Preferences to restore your settings.
How To Flash A Video Card For Mac Pro 2019
![How to flash graphics card for mac pro How to flash graphics card for mac pro](/uploads/1/1/9/0/119029812/147723008.jpg)
Best regards,
Nubz