No 4k on Mac OS 11.3 (M1)
 

After upgrading to macOS 11.3 i cannot select a 4k resolution for my DisplayLink connected screen anymore. Before the update it worked well.

Hi am experiencing the same, before the update it was working perfectly (smooth @4k).

It broke with the update to BigSur 11.13 and now the best I can get is 1080p.

I am using a resolution switcher (RDM - https://github.com/avibrazil/RDM) which gives me a workaround for the missing resolutions (but no HiDPI > 1080).

Works fine on a MacBook Air M1 with LG 4k Monitor connected via DisplayLink Dock.

I have this too, reported to support last night, supplied logs this morning.

RDM works great
 

RDM works great! Thanks for that work around

It is nice and really cool that you found the workaround and posted it! :) :)

We should not forget that this is a workaround and DisplayLink should support the latest version of BigSur.

Rollback
 

Any thoughts of rolling back the OS Update? Having a 4K monitor is more important that any new feature in 11.3. As a work around until DisplayLink Supports 4K again for 11.3

I have found out this is not possible :(

Why do you mean? Did version 11.3 introduce some limitations?

I read that if you use Time machine to restore, it does not restore OS updates. I'm relatively new to Mac so not sure how true that is. I did a restore from yesterday (before I updated to 11.3) and I am still running 11.3. It did not roll back my OS update.

You need to reinstall macOS with lower version and then restore from Time Machine.

I'm not ready for that....Hopefully, We get a driver fix

Reply from DisplayLink Support
 

I got this reply from DisplayLink Support:


Hello,

Thank you for reaching out!

I have verified the issue with our engineers. It seems like the issue comes from the MacOS update itself.

We have already reported it to the OS vendor but without their help there is little that we can do right now.

I will keep you updated if we will find something more about it.

Best regards,

11.4 beta
 

Did anyone try 11.4 beta? has same issue?

Work around - revert to 1.2 DisplayLink
 

A workaround is to run DisplayLink 1.2. This is what I stumbled on today while talking to a support staff of the dock I am using. I can confirm that this is currently working for me. I hope to be able to switch back to 1.3 soon.

I am using Targus Dock191, with 2 4k monitors. I am also using a 3rd monitor via thunderbolt (Not-Displaylink, vertical orientation 1080p). I would use this with displaylink but it appears vertical orientation is unavailable as well.

DisplayLink 1.3.1
 

MBA M1 11.4 / DisplayLink 1.3.1
Dell D6000

Hey. Just installed new version of your driver. There is no difference with 1.3 driver.
Still has 1080p as max HiDPI resolution on 4k monitor.

Attachment 4115

Thanks - saves me an install and reboot

Same here. 4K is available on Big Sur 11.4 on DisplayLink v1.2.0 only. Newest release 1.3.1 does not solve issue with limited resolution to 1080p for 4K monitors :(

How did you get 4k output with MacOs 11.4 and Displaylink Manager 1.2?
Neither 1.2 nor 1.3 nor 1.3.1 do work using my M1 MacBook Pro. The Monitor gets connected with 4k/60Hz, but the resolution that I can pick in MacOS is limited to 1080. :confused:

Any ideas?

Anyone test 1.3.1 version?
 

I have installed 1.3.1 on BigSur 11.2.3. Things are working just fine. I'm afraid to update BigSur and loose my 4k monitor.

I have 2.5k and 4k attached to my DisplayLink device. I have 2 additional 4k monitors rotated 90 degrees attached directly to the MacMini M1 via HDMI and USB-C to displayport.

I just don't want anything broken, and restoring from TimeMachine will be annoying.

So can anyone confirm 4K is working with DisplayLink in 11.4 with DisplayLink 1.3.1?

It is not working for me

Updated and it seems OK.
 

I updated my M1 laptop, connected my pluggableUSBC-6950-DP device that was normally connected to my MacMini, and 4K is working on it. Screen rotation still is broken, but that was not supposed to be working. 2.5k and 4k monitors worked.

I did option-click the Scaled radio button to get all modes. Its listed as "low resolution" which is irrelevant to me.

So when I get time I will update my MacMini, and I'm not anticipating any issues.

macOS 11.4 and DisplayLink Manager 1.3.1

Seems to be working with DL 1.4, although I had to select scaled rather than native, and I'm not sure why it says low resolution next to it.

Anyone know?

Low resolution means that HiDPI is not enabled. The result of this is that more than likely the text/lines will be blurry at resolutions other than native. There is the outstanding displaylink feature request to try and get HiDPI on the misisng resolutions above 1920x1080 here.

Thanks.

So if it appears next to what IS the native resolution of the monitor - e.g. 3840 x 2160 - then it doesn't make any real difference. I suspect for this thread, that's good enough for Jazz

I don't recall it managing 60Hz as refresh rate before, only 30Hz, so that's probably good news too.