Mac mini 2019 - intermittent black screen (DELL P2715Q )


macrumors 65816
Original poster
Sep 11, 2008
About once a week for no reason I can fathom when I move the mouse the screen is black and I can see the mouse moving but the desktop or login prompt do not re-appear. I have to turn off the Mini at the power button and restart.

Does anyone have any ideas what is going on here?

Monitor - Dell P2715Q


macrumors 68000
Nov 5, 2010
I have two of the same monitor, one with the first generation of firmware. What I have noticed occasionally is they won't wake from sleep and appear black. This has happened on both a nMP and a PC using display port. Try plugging in using HDMI see if that cures it.


macrumors regular
Jun 21, 2010
Prescott, Arizona
I have a similar Dell P2415Q monitor, which is connected to my 2018 mini by a HDMI cable, and I encounter the issue you describe perhaps once or twice a month. In my case, the screen goes blank for perhaps 2 or 3 seconds and then returns to normal.

I did some research on this and a frequent suggestion was to try a different cable. This issue is so minor that I haven't done anything more on it, but I would like to get it fixed and look forward to hearing from other forum members.
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macrumors 65816
Feb 21, 2011
I have a Dell U38”. I did have this happen a few times a week when I was using hdmi cable to egpu, I also thought having all my cables bundled with tie wraps aided it. But since I started using dp cable instead of hdmi the issue has never surfaced again.