Mac Mini M2 available resolutions on identical monitors are different

Question

Level 1

8 points

Mac Mini M2 available resolutions on identical monitors are different

I have a new Mac Mini M2, connected to (2) Dell S2722QC monitors, both to USB-C on the Mini. Yet the available resolutions are different. The list of resolutions is identical, except on the first ("Main display") - there is an additional resolution available of 3008x1692. I happen to like this resolution, but when I click on the 2nd monitor (extended display), that resolution disappears and I'm either at 2560x1440 or 3840x2160. Only the one resolution is missing. This is the case even when I enable "show all resolutions". Have no idea why this might be. Thanks for any input.

Mac mini, macOS 14.1

Posted on Nov 28, 2023 7:32 AM

Reply

Answer 1

Top-ranking reply

den.thed

Level 10

82,564 points

Nov 28, 2023 9:13 AM in response to mattand666

1) Be sure to stagger the Displays on the TB/USB-C ports.

2) It is normal to have one 6K and one 5K when connecting both to the TB/USB-C ports.

see > Connect a display to Mac mini - Apple Support

3) Also see "Display Support" in the Spec's at > Mac mini - Technical Specifications - Apple

Display Support

Simultaneously supports up to two displays:

One display with up to 6K resolution at 60Hz over Thunderbolt and one display with up to 5K resolution at 60Hz over Thunderbolt or 4K resolution at 60Hz over HDMI

Reply

Answer 2

mattand666 Author

Level 1

8 points

Nov 28, 2023 8:46 AM in response to mattand666

Additional info - the monitors seem to be detected at different resolutions...

Apple M2:

Chipset Model: Apple M2

Type: GPU

Bus: Built-In

Total Number of Cores: 10

Vendor: Apple (0x106b)

Metal Support: Metal 3

Displays:

DELL S2722QC:

Resolution: 6016 x 3384

UI Looks like: 3008 x 1692 @ 60.00Hz

Main Display: Yes

Mirror: Off

Online: Yes

Rotation: Supported

DELL S2722QC:

Resolution: 5120 x 2880 (5K/UHD+ - Ultra High Definition Plus)

UI Looks like: 2560 x 1440 @ 60.00Hz

Mirror: Off

Online: Yes

Rotation: Supported

Reply

Answer 3

mattand666 Author

Level 1

8 points

Nov 28, 2023 9:25 AM in response to den.thed

Indeed - I stumbled upon the tech spec after a friend chimed in. Seems its just the way the hardware is, combined with the limits in the way we can scale. Interesting addition to the discussion here:

https://forums.macrumors.com/threads/mac-mini-m1-external-display-scaling-option-hdmi-tb3.2270618/post-30534499

Thanks.

Reply

Answer 4

den.thed

Level 10

82,564 points

Nov 28, 2023 10:49 AM in response to mattand666

You're welcome.

Good find, (jdmc) Justin hit the nail on the head.

Plus now I know what to look forward to, when I upgrade from my current lower resolution dual display setup.

Reply

Mac Mini M2 available resolutions on identical monitors are different

Similar questions