MacOS Monterey display resolution problem

Thanks for this suggestion. I tried both, and it didn't work. It lets me get to the higher resolution, but will not let me adjust refresh rate from 60 to 100 that would presumably be the final step in resolving. Oh well.

On my Mac mini m1 with Monterey a similar problem. Suddenly my monitor has to cope with a bigger screen. So my monitor a LED Cinema Display, only gives a view off a part of the screen. With cursor keys on the keyboard I'am able to move the view; up, down, right and to the left. I don't know how this effect is enabled. I can restart my Mac of course. But that is a Windows trick.

Via System Preferences > Displays to select 'Default for Display, helps that' does not work...

It should have been something with zoom. The objects on the desktop were bigger than normal. I was forgotten where the Zoom preferences were stored. In Accessibility of course....

I must have enabled it with a Shift-Control and a gesture on the mouse. Thanks. Ik keep this in mind.

Hello

After upgrading my system to Monterey 12.1 today, my external Samsung 34" monitor (S34J55) stopped showing the 3440X1440 resolution or anything more than 1080P, even after clicking Option+Scale or All resolutions, any suggestions or thoughts on this problem please?

That didn't work for me. MacOS kept switching back to display mirroring.

My gear is MBP 2017 13".

External (primary) monitor is a new LG 29NW600 which is a 29" ultra-wide.

Checking in System Information under USB and shows this as a "Billboard device" with a SN of 1234577890ABCEDF.

Was using the LG software for splitting screen into zones but it would periodically start the spinner and after a while screens would flip off and on, both on laptop screen and the display.

I normally work with laptop closed and just use the external.

As mentioned in other posts the resolution keeps getting set back to 1080p instead of its own native. Setting to scaled doesnt help.

Have now turn off the LG control software and installed BetterDummy https://github.com/waydabber/BetterDummy/tree/v1.0.13 which seems to have solved the issue - at least it has kept the settings after a reboot which is already way better than macOS most of the time!

Arrgh! This happened to me this morning after updating to Monterey 12.2

I use a Dell U4919DW, and the scaled resolution I previously used is not in the drop down any longer.

What my choices are now are too small, too large or too out of focus!!!! What happened??

It is the same on my computer after update as well.

My research in internet showed, that happened literally to everyone.

I was really angry as I saw it and spent a lot of time to check what really happened and what. I thought, it could be firmware of monitor. But no, apple just cut amount of given resolutions. And any workaround (BetterDummy, SwitchResX) doesn't work for me. Very-very sad.

I am on macOS 12.0.1 on a 2017 13" MBP. What I did was uninstall BetterDummy. Then uninstalled the LG software for my monitor (LG 29WN600-W). Then I installed the SwitchResX trial but needed to set a custom resolution (2560x1080) and refresh rate (75 MHz) . Have set monitors up as my UltraWide as main with a 2560x1080 resolution. Have rebooted couple of times to see if the settings hold across boots and so far so good.

I also noticed that Apple added the "Show all resolutions" box to Display > Scaled. This is an improvement from having to hold down the Option key before clicking "Scaled". I assume this was a Monterey update.....I overlooked it when I was trying to use the Option key as I hadn't needed to do that for over a year+.

I've accepted that 3360x945 is going to be what I have to use. It's too big, but it's now the only reasonable resolution for my eyes. All other potential options are "low resolution". Booo!

Suddenly, my monitor started working again and the 3440X1440 started showing in my system preferences. I tried all the apps and fixes mentioned above, none of them worked. But I updated my system from 12.1 to 12.2. In the first 24 hours nothing happened and I kept experimenting with custom resolutions on SwitchResX, which didn't work. Then suddenly, on one of my startups the resolution showed up. I uninstalled SwitchResX and it was still working. 3 days later it is still working and I'm keeping my fingers crossed :)

I had the same problem. Fixed - see below.

MacBook Pro 15 inch 2019

2.3Ghz 8-core i9

Radeon Pro 560x 4 GB

Using external display from MobilePixels. Duex Pro

Fix: Installed Display Link software from Synaptics that was listed on the website - followed the instructions.

https://www.synaptics.com/products/displaylink-graphics/downloads/macos-connectivity-1.5?filetype=exe

I also installed Monterey on my backup laptop - displays worked fine.

Mac Book Pro 15-inch, Mid 2015) w/ (2) 27" LG HDMI displays

2.2 GHz Quad-Core Intel Core i7

Intel Iris Pro 1536 MB

Having the same issue. I do see the correct resolution for my LG 35wn73a widescreen: 3440x1440. But it is just blurred after the update to Monterey. Super annoying for work.

Using Monterey 12.2 on MacBook Pro 13" 2017 with i7.

I am having this exact same problem. I have a 2018 Macbook Pro and have used an external monitor (Pavilion) with an optimal resolution of 2560 x 1440) and have never had a problem. After the Monterey update, that resolution has disappeared. My screen now looks like large print as the highest res. is 1280 x 720. I have tried restarting my Mac, and the "option" hold down method to no avail.

Update. I finally got it to work. I tried all the options that had been presented in here up to the point of this post and nothing worked. But... I decided to try to switch dongles and see if that worked. It did—so for others struggling, try a new connection port from your HDMI cable into your USB-C supported Macbook.