I use two external monitors connected through a Startech dock. Sometimes, after I plug out and plug in my laptop, one of the monitors stops working. It seems not to get a signal anymore.
Only when I reboot my laptop all is fine again.
So I assume this is an OS X issue. Also this only started around the time I updated OS X to 10.15.4
Does anyone else experience the same issue?
Is there a fix I can implement?
MacBook Pro 16", macOS 10.15
I seem to have found the solution.
One of my monitors (the one that constantly went blank) had DP 1.2 turned on (from an attempt to daisy chain the monitors).
After I turned off DP 1.2 all seems to be good now.
(It's a Dell U2715H)
I seem to have found the solution.
One of my monitors (the one that constantly went blank) had DP 1.2 turned on (from an attempt to daisy chain the monitors).
After I turned off DP 1.2 all seems to be good now.
(It's a Dell U2715H)
Hello applentoast,
Welcome to Apple Support Communities. It sounds like you're having trouble with external monitors connected to your Mac. I'd be happy to share information that may help.
First, take a look at the information here: Use external monitors with your Mac.
You may also want to try the suggestions in this article: Get help with video issues on external displays connected to your Mac.
Take care.
one of two external monitors stops working after a while
