External 4K displayer will run out of video memory.

MichaelLee1667 wrote:

When my MacBookPro2015 used the MacOS10.12 or earlier version, everything is ok. But in Mojave, I found after about one or two days, my computer will be stuck sometime, and the frequency increases with time.

And I finally found the reason is that I use a LG's 4K external displayer, who eats all my video memory. And after I pull it out, the usage of video memory fall to normal level.

And I am NOT a minority, so, please fix this ASAP.

Here is my MacBook's information,

https://discussions.apple.com/content/attachment/cc247b87-53e9-439b-bf78-8889a140df2c

And this is my external displayer's info,

https://discussions.apple.com/content/attachment/f89327be-9422-4de1-be15-825118c18740

See if there is anything in here—

Get help with video issues on external displays connected to your Mac

https://support.apple.com/en-us/HT201177

Use 4K displays, 5K displays, and Ultra HD TVs with your Mac

https://support.apple.com/en-us/HT206587

"...And I finally found the reason is that I use a LG's 4K external displayer,

who eats all my video memory. And after I pull it out, the usage of video

memory fall to normal level...."

How are you measuring "usage of video memory"? What you show in the

screen shot is simply stating which graphics adapter is being used and its capabilities.

BTW, we are just users like yourself trying to help people and not Apple

engineers/employees.