I uninstalled the 1.4 DisplayLink Manager App, installed this 1.5 Beta, and rebooted. I am still not seeing the additional resolutions in display preferences on my M1 MacBook Pro.
>> "Introducing additional inferred resolutions on 4K monitors: 2560x1440 and 3008x1692"

Did You read it ?

"C.4 Changes in 1.5.0 beta
----------------------------
- Introducing additional inferred resolutions on 4K monitors: 2560x1440 and 3008x1692
- Beta: Apple Watch unlock when resuming displays from sleep (33190)
- Fixed monitors power save mode issue on macOS Monterey 12 beta (33198)
- Improved memory management on rotated screen (33179)
- Improved rotated monitor performance on dual GPU machines (33072)"

+3 for this suggestion to make 4K monitors useful. It's otherwise wasteful to run them at 1080p, and far too small text running at their native resolution without scaling.
A 2560x1440 HiDPI mode is badly needed.
Thanks

Please add this Displaylink!!!

Would be great, please add 2560x1440 on 4k monitors.

Multiple 4K monitors and M1 are an unfortunately not a compatibility item with displaylink unless you run it native and like extremely small text.

4k Monitors are unuseable until this feature is added!!! +3

Please add this! It would be a game changer +3

+1 would be great

Would be great. I'm not a fan of stuff being either gigantic or so small I can't see it and nothing in between. :( Still not working on 1.4.0

A proper "looks like 2560x1440" in the same way Apple does it would be really nice!

At the moment, we have a "2560x1440 (low resolution)" mode that makes everything look blurry.

The thing is, I have 3 identical monitors, all of them set to 2560 x 1440. The ones running natively look great, while the one via DisplayLink looks blurry.

Yes please displaylink add the "looks like 2560x1440 - the other 2 display resolutions are way too big or way too small on a mac mini M1 with 4k monitors! I had high hopes for the adapter I just bought but its just sitting on my desk now waiting for this to get sorted

@TomP its a limitation of using DisplayLink and/or Macos. There has been no answer as to if this is a displaylink issue or a limitation of macos. With displaylink you either have 1920x1080 FHD or full 3840x2160. This request has been outstanding since last year and no response so you can only assume that it will never happen. So there are no resolutions that displaylink supports above FHD with HiDPI. The only solution is to drop the displaylink dock and use a single monitor as this will typically give you the HiDPI resolutions that are missing. Unfortunately it does mean a single display. Thats probably not to much an issue if the 3840 text from the mac is not readable for you.

I am also using a Dell D600 DisplayLink Dock with my M1 MacBook Air and I have a 4k Samsung Monitor and a FHD Acer Monitor connected. My Macbook is showing me, that my 4k Monitor is only FHD and gives me no option to get the full capable resolution, eventhough all my cables are 4k capable. Now I am looking for the reason for this issue and maybe an update for display link can solve that. If anyone knows, what an other problem could be, let me know. Thanks

Ran into this problem as well. Really wanted to use an M1 MBP with my two LG 4K monitors but can't handle the small UI elements in MacOS at native 3840 x 2160. Hoping this feature will be added soon.

What a great idea! Displaylink obviously get more revenue form the hardware licensing than the drivers. Opensource the drivers and let the community drive some of the development to boost the sales of the physical devices. That way we may get improvements much faster than today and not needing 7+ months to support resolutions. Different idea's and ways of achieving outcomes will aid the adoption of the hardware.

please open source the driver so we can just fix this ourselves

The limitation of being boxed into 1920x1080 has driven me to remove DisplayLink and simply purchase a larger newer monitor such that I can get the required real estate space on an M1 with a direct connection. While DisplayLink seems to be capable of driving multiple monitors the lack of ability to change resolutions and retain readable fonts that are not blurry simply exclude it from being used in an environment where you are in front of the monitor for 8-10hrs a day. If this request had of been delivered upon then I would have retained my DisplayLink adapters and avoided the expense of a new monitor. Given the period of time this request has been outstanding I don't see the capability being available any time soon. The only alternative is to remove DisplayLink and replace by other mechanisms.

Hi all,

I face the same issue than you.

Here is my setup:

I connect my M1 MBP to a
- a first LG 27UL850 via usb C -> works well at 1440p for example
- a second LG 27UL850 via a startech display port dual 4K 60Hz adaptater -> same issue. Only 1080p or tiny 4K resolution available.

But I was wondering: has anyone tried to use an adaptater display port -> USB-C or display port -> HDMI between the startech output and the screen input ?

Besides, @tom said earlier : it seems that the M1 can't perform sub integer scaling.
But isn't it exactly what it does for my first screen which is directly connected to my Mac ?

Thank you for your insight on that matter.

Raphael

I am using an M1 MacBook Air with an Asus PA32UC 4K monitor. With DisplayLink Manager 1.4 this issue is still not resolved. I can only select 1080p in the MacOS Big Sur Display settings, even when option-clicking on the scaling option. Using a separate tool I can access higher resolutions but only 4K fills my screen. If I select my preferred resolution of 2560x1800 then I have large black bars around the visible screen area and no option to scale.