Macbook Pro 2020 Model - Black Border display issue

nao1120 wrote:

Good Morning,

I have an occasional issue where the display will not display full screen anymore, and it'll switch to almost like "windowed mode" but in that windowed mode, it'll be a smaller desktop. Its almost like the display stops using 2-3 inches from the bottom and the right side where that that space is filled with black. The mouse cursor can't get into this black space. Its literally not using the entire screen. Weird, Anyone experience this and what is the course of action?

I'll power down the unit, and it seems to work fine.

My guess is that its a severe OS bug, or a HW issue, but proving this is intermittent.

I've already reinstalled Mac OS (On 10.15.7)

What exact Macbook Pro 2020 Model is this?

nao1120 wrote:

MacBook Pro (16-inch, 2019) - Has the AMD 5300M graphics.

There is nothing attached or hooked up in any way. Plain Laptop screen.

Maybe you can say more...

old issue, new issue, what changed or precipitated the issue.

This MacBook Pro has two GPU—both Integrated and Discreet

Graphics:

— 2.6GHz

AMD Radeon Pro 5300M with 4GB of GDDR6 memory and automatic graphics switching

Intel UHD Graphics 630

(Configurable to AMD Radeon Pro 5500M with 4GB of GDDR6 memory, AMD Radeon Pro 5500M with 8GB of GDDR6 memory or AMD Radeon Pro 5600M with 8GB of HBM2 memory)

— 2.3GHz

AMD Radeon Pro 5500M with 4GB of GDDR6 memory and automatic graphics switching

Intel UHD Graphics 630

( Configurable to AMD Radeon Pro 5500M with 8GB of GDDR6 memory or AMD Radeon Pro 5600M with 8GB of HBM2 memory)

ref: Tech Specs https://support.apple.com/kb/SP809?locale=en_US

—Try a SafeBoot to clear system cache files  https://support.apple.com/en-us/HT201262

  Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache,  etc. 

   Login and test. Reboot  as normal and test as caches get rebuilt.

—Try resetting  NVRAM/PRAM http://support.apple.com/kb/ht1379 if no resolve

Try resetting the  SMC  https://support.apple.com/en-us/HT201295

— Make some changes to default resolution in >System Preferences>Display to elicit a change and toggle back to your preferred setting.

general rule of thumb Uninstall all third party apps that are Cleaners/Optimizers/Anti-Virus/VPN

[edited by leroydouglas]

I have a similar issue. There are black borders around the display of my 13-inch, MacBook Pro 2020, which is currently running on iOS version is MacOS Catalina 10.15.7. I also cannot go to BigSur due to some incompatibilities.

It is very annoying as the display is already quite small and this issue makes a few inches completely redundant.

In fact, it seems like an underscanning issue and it happens in native resolution without any external displays, mirroring or scaling.

¿ Sidecar—make some changes ?

Use your iPad as a second display for your Mac with Sidecar ...