Screen issues with OS X Mojave

[Karlis]

Hi there,

I've some screen issues with os x mojave and my mac pro (late 2013) and a 4K display:

With os x high sierra (10.13.6) all is fine! Any ideas?

 

[FNH15]

My initial assessment is some sort of graphics card failure, but if it's fine on High Sierra I'm inclined to believe it's Mojave. Given that I have colleagues with exactly the same setup as yours, I would suggest doing a clean install of Mojave and seeing if it persists...

 

[Fishrrman]

Fishrrman's credo:
If one thing works, and another thing doesn't work...
... go with what works...

 

[airlied]

I suppose that mojave havn't figured out how to make a graphic card supports metal 2 yet. Because Mine has some similar issues.

 

[fisherking]

Fishrrman's credo:
If one thing works, and another thing doesn't work...
... go with what works...

or... find the problem, and fix it...

 

[ZStech]

Try to reset SMC and NVRAM
Use these tutorials:
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063