Thanks @Alvan Rampon - I have submitted my feedback and screenshots of the same behaviour on v1.5 beta via the email address you provided.

It would be great if there was a synaptics-monitored forum thread or similar for beta feedback if it is being made publicly available so that common issues could be identified and shared back to the product teams?

@anonymous I agree. If it can not be done don't sit there and ignore your customers but tell them the straight answer. Or if displaylink don't have the resources to do this just opensource the driver.

I see no difference over v1.4. I was always able to access 2560 x 1440 and 3008 x 1692 via option-clicking "Scaled", but it is still the "low resolution" versions being offered under the 1.5 beta. All I want is HiDPI 1440p. If this is never going to be available I wish the product manager would state it now so that we can all move on.

It doesn't work - still no HiDPI resolution for 2560 x 1440 or 3008 x 1692 !

I updated to 1.5 and restarted but still only see three options under-scaled for my 4K LG monitor connected via Dell DisplayLink dock.

3840 x 2160
1920 X 1080
1600 X 900

When I option-click the scaled radio button I get many more options including 2560 x 1440. Most are listed as low-resolution. It works but looks kind fuzzy compared to my other monitors. I'll contact support as you suggested to see if this is expected behavior.

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.