macOS Mojave [10.14.6] does not always recognize second display at startup Returns [No Signal]

MARSPATH
MARSPATH used Ask the Experts™
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macOS Mojave [10.14.6] does not always recognize second display at startup Returns [No Signal]

I have 2 [Acer & Dell] connected [Lightning connectors ] to Mac mini [late 2018]. Occasionally OS does not recognize second [can be either one of 2] display. I have swapped displays/ports - no help. Sometimes [!] Restart OS works - not now!

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Macs have always had sucky driver support to non- Mac officially supported devices.   I see that all the time with monitors and docks that Windows systems support perfectly fine, but Macs always fail.  You have to keep playing with the cables until they come on.  They seem to expect you to use a single monitor, not multiple monitors.
MARSPATHRetired EE/Computers/IT

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Thanks, You are correct! Sooner or later Both monitors connect...

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