macOS 27 Golden Gate Gains Native Ultrawide Display Support

[Brenzo]

Any word from someone in developer beta if this addresses/unlocks HiDPI for ultrawides above 3840x1080?

 

[keksikuningas]

Any word from someone in developer beta if this addresses/unlocks HiDPI for ultrawides above 3840x1080?

you have a 5120x1440 ultrawide too? Would love to know as well, I am fine with 3840x1080 but would love a little more space , although no idea if it's possible mathematically

 

[Brenzo]

you have a 5120x1440 ultrawide too? Would love to know as well, I am fine with 3840x1080 but would love a little more space , although no idea if it's possible mathematically

I have a 7680x2160 (Samsung Neo G9 57") that basically is cutting resolution in half to 3840x1080 in order to achieve HiDPI. It may simply be a limitation of monitor hardware, and MacOS 27 won't solve this for me.

It's frustrating through because I "upgraded" to this monitor from a pair of 27" 2K/QHD, yet actually had more screen real estate and better resolution on those, even though the 57" should technically be the equivalency of two 32" monitors. I know for this particular monitor, there are some "workarounds" where you can essentially create two separate screens and merge them into one - either through two separate display connections to the dock or using BetterDisplay virtual monitor settings, but I really want to avoid that.

3840x1080 works, but certain elements are too big - especially menu bars - Chrome or Excel will take up about 10% of the vertical space, leaving you with far less screen real estate. 7680x2160 is gorgeous, incredibly crisp, but all the UI elements are way too small, and then I have to zoom within each individual app with mixed results, which then causes issues when I unplug and work directly on the laptop (though maybe I could adjust that behavior in BetterDisplay app). Honestly, something in between is what I really need.

 

[2xmos]

A user named andreeinprogress started a similar thread over on the Apple Support Site.

Today he posted this update, but his post has since mysteriously disappeared from the thread. I don’t know why. I got his post in an e-mail update, so here it is (apologies for the orange if you’re color blind):

I am on the macOS 27 Developer Beta. I can confirm the situation improved, but (as of now) still is not on par with pre-M4 Macs. If you are on the beta, I suggest sending feedback on what/how this is working, so that it can hopefully become fully functional before the fall final release.

What works as of now (June 9th 2026 - 27.0 dev beta 1):

• ✅ Resolution 3840x1620 HiDPI is available
• ⚠️ 165Hz framerate (monitor native) is available at that resolution, though it somehow still does feel different than other devices/pc I use this monitor with (those other feel snappier, but it might be just me)
• ❌ HDR is not available at that resolution
• ❌ Monitor brightness control is not available at that resolution

HDR and monitor brightness control do become available at lower resolutions, though HDR does not look good (might need tweaking or calibration).

I will update here if something changes with the next betas.

⚠️ IMPORTANT ⚠️

As of beta 1, do not try to launch BetterDisplay if you set an override for the monitor ID, it will crash macOS and you'll need to reboot.

Is 5120 x 2160 HiDPI available please?

 

[macagain]

I wonder if this fixes the issue with lost HiDPI resolutions on 4k 16:9 screens... i.e. the regression starting with the M4 where the framebuffer budget limit was hardcoded to 6720 in the DCP?

 

[Brenzo]

Anyone running Mac OS 27 who can confirm how it handles Ultrawides? I'm hesitant to ugprade on my main work MBP to test with Samsung 57"