I have two Asus Pro art monitors connected to my new M4 Mac Mini. Even though I switch it off manually when I don't want it to come on, the second monitor wakes up when the system backs up or whatever and the screen goes blue. I couldn't find any way to control this in the system settings. Any suggestions for keeping it asleep when the main monitor is asleep other than the very inelegant solution of unplugging it? Thank you
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Second monitor wakes up
- Thread starter Bambina06
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Brian33
macrumors 68000
I'm wondering how the two monitors are connected.
If the second monitor (the problem monitor) is connected to the Mini's HDMI port, maybe try connecting it to one of the Mini's three Thunderbolt 5 ports (on the back). The Mini's front USB-C ports do not support display connections, I think. Hopefully you have a good cable to test with. I think a Thunderbolt 3 or higher cable should work.
If the problem monitor is connected to the first monitor (daisy-chaining), again, try connecting it directly to one of the Mini's Thunderbolt 5 ports.
See if the problem persists. These might not be good workarounds for you, but maybe the results will help someone more knowledgeable to figure out what's going on.
If the second monitor (the problem monitor) is connected to the Mini's HDMI port, maybe try connecting it to one of the Mini's three Thunderbolt 5 ports (on the back). The Mini's front USB-C ports do not support display connections, I think. Hopefully you have a good cable to test with. I think a Thunderbolt 3 or higher cable should work.
If the problem monitor is connected to the first monitor (daisy-chaining), again, try connecting it directly to one of the Mini's Thunderbolt 5 ports.
See if the problem persists. These might not be good workarounds for you, but maybe the results will help someone more knowledgeable to figure out what's going on.
Those HDMI-to-USB-C cables are most likely the culprit. They're passive, so the Mac treats both as a constant DisplayPort sink and pushes a handshake any time it wakes for background work (Time Machine snapshot, network tickle, etc). The monitor flashes its "no signal" blue because the Mac handshakes then drops it before sending real frames.
Two cheap things to try first. In System Settings → Battery (or Energy if you're on a previous OS), turn off "Wake for network access" — that kills a big chunk of background wakes. Then in the ProArt's OSD, find "Signal Auto Detect" (sometimes labeled "DP Stream") and disable it so the panel stops waking on the handshake itself. If neither helps, swapping that HDMI adapter for a proper USB-C DP Alt Mode cable on the second monitor usually solves it for good.
Two cheap things to try first. In System Settings → Battery (or Energy if you're on a previous OS), turn off "Wake for network access" — that kills a big chunk of background wakes. Then in the ProArt's OSD, find "Signal Auto Detect" (sometimes labeled "DP Stream") and disable it so the panel stops waking on the handshake itself. If neither helps, swapping that HDMI adapter for a proper USB-C DP Alt Mode cable on the second monitor usually solves it for good.
hello again, unfortunately, the cheapest fixes did not work. the monitor is an
which one will work?
thank you!
ASUS ProArt 24" Monitor - WUXGA (1920 x 1200), 16:10 Monitor, 100% sRGB/Rec.709 ΔE < 2, IPS, DisplayPort, HDMI, Calman Verified, Anti-Glare, Tilt, Pivot, Swivel, Height Adjustable - PA248QV
it does not have a usb-c port. it has VGA, HDMI, Display Port, and USB 3.0,which one will work?
thank you!
for anyone struggling with the same issue, a USB-c to DisplayPort cable did the trick!