Hi I have the M1 mini running it on two 4k samsung monitors and only 1 will work at a time. I've tried plugging one in after start up, switching cords around, using USB/VGA/HDMI. Monitors work and my Mac Pro can power them why can't this Mac mini?
Any suggestions would be great this is driving me nuts!
Not sure if you know, but you can only hook up one monitor to USB-C at once. To get dual displays, you have to have the other one on HDMI. If you set it up with that configuration, then check your About this Mac to see if it recognizes both monitors then you should be good to go. Reboot if there are any issues and check displays again. If you've confirmed that both monitors work individually in both USB-C and HDMI and it still doesn't work, you should probably check in with official Apple support.
I do have an issue on waking from sleep that the USB-C monitor sometimes isn't recognized if another adapter is plugged in to the other USB-C port and I found out from Apple Tech Support that this is a known issue. Unplugging both USB-C devices and replugging the monitor generally resolves the issue.
Not sure if you know, but you can only hook up one monitor to USB-C at once. To get dual displays, you have to have the other one on HDMI. If you set it up with that configuration, then check your About this Mac to see if it recognizes both monitors then you should be good to go. Reboot if there are any issues and check displays again. If you've confirmed that both monitors work individually in both USB-C and HDMI and it still doesn't work, you should probably check in with official Apple support.
I do have an issue on waking from sleep that the USB-C monitor sometimes isn't recognized if another adapter is plugged in to the other USB-C port and I found out from Apple Tech Support that this is a known issue. Unplugging both USB-C devices and replugging the monitor generally resolves the issue.
Im using duals on mine, one hdmi and the other on a hdmi to usb-c adapter.
At least one of your displays needs to be HDMI.
(Sorry, when I said "both" I didn't mean at the same time.)
I'd check with Apple Support before you return it. I know they're tracking the M1 mini display issues closely.
Make sure it isn't the cable as well. Switch the cables up so that you are sure one the HDMI cables isn't the culprit.
When you switch the monitors, do you get the same result?
Thank you for the reply. I am hoping its not a hardware issue but looking like it might be.
With the suggest configuration (1 USB-c to HDMI and 1 HDMI to HDMI) only one screen works and no other screen is even detected. This is an improvement though since whenever I have plugged them in before together no screen would work...
So it looks like nothing from the HDMI is recognized. The USB-C works but even a single connection from the HDMI to monitor isn't recognized. Great.
Yes tried multiple and went and bought new ones. Is there anything else before I return this non-functional beauty?
If:
Sounds like a defective HDMI... Sorry.
Mac mini won't display two monitors
