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.

I am using an M1 mac mini. The 4k monitor which is connected by using DisplayLink(Dell D6000) can display just FHD*1080p) retina mode with ver. 1.4 software. I cannot find 4k(3840*2160) resolution option. How can I solve this problem?? Is there any possibility to make HiDPI(2560*1440) resolution on the M1 mac with the Displaylink?

i need it to!!!!! cant only select 1080p or 4k. 4k ist to small, 1080p at 27inch is to big... 2560 x 1440 as HIDPI is the best solution!

Please add HiDPI support "Looks like 2560x1440" for 4k Displays. I don't understand why you are not adding this. Its the most common resolution you run on a 4k Monitor. Without this display link is useless on 4K.

Confirmed that 1.4 does not fix this.

Support said the following: "Fix should be included in the next release of the driver which will happen very soon I do not have the exact release date available yet though." (before 1.4 release) - so unclear what is going on there.

Right now with an M1 I'm using DisplayLink to power one monitor (not 4K) at full resolution and connecting the 4K screen directly which lets mac OS do the scaling... not ideal but it works.

Sadly no inclusion in release 1.4 either. It looks like that Displaylink and M1 simply can not perform sub-integer scaling ;(. 6 months and multiple releases and still no HiDPI on the resolution above 1920x1080. Guess usability for end users is not a priority.

Given the lack of ability to produce a scaled resolution with HiDPI at 2560x1440, and no response to the feedback, i've sent back my D6000 dock as well as the M1. There is no response that the current issue will ever be resolved so no point hanging onto the Displaylink dock. Seems that 4k monitors and displaylink with M1 MAC are incompatible unless you want really large text. Oh well was a good experiment just not useful.

Would be great if the PM could share more on why this is broken and what's the hold-up. It's clearly not working for a lot of people, so can be easily reproduced with off-the-shelf equipment. It's quite frustrating and not a good way to interact with your customer base.

I just downloaded version 1.3.1 (Build 56.126) and read the release notes quote "Re-added 4k mode on Apple M1 Macs missing after macOS 11.3 update (32869)". This feature is not working for my M1 MacBook Pro and I'm very disappointed in the company's SDLC. It took 3 months to release this new build and it's very clear there was no QA testing involved in the process.

1.3.1 does not fix the issue of my 4k monitor being missing the option for 2560x1440 hidpi either. All text is blurry at this resolution. Reading the displaylink doco says it will use the resolutions provided by the monitor. My EDID data shows that 2560x1440 is a supported resolution within the CEA options. I guess this means I return the DisplayLink dock and probably also the M1 as this is not a usable solution and given that it appears this request has been here in other threads for a few years that this is something that displaylink can not address. As per the forum threads 1.3.1 also did not address the 4k resolution still being missing for myself. Guess its a bust.

1.3.1 does not fix this issue. 2560x1440 is still "low resolution." Is there an ETA for a fix?

Just installed 1.3.1 and 2560x1440 HiDPI is not working for me :(

@Alban Rampon any news on 1.3.1release dates please? If this is not supporting 2560x1440 HiDPI I have a M1 and a displaylink dock to return ;)

Please add HiDPI support "Looks like 2560x1440" for 4k Displays. I don't understand why you are not adding this. Its the most common resolution you run on a 4k Monitor. Without this display link is useless on 4K.

This problem also on MacBook Pro 16 on Catalina, with DisplayLink I don't have any HiDPI modes for my display, without DisplayLink everything works great.

At the moment, when I am using my Macbook Air M1 with a Startech Dual 4K60Hz Dockingstation, it looks super blurry, when switching to 2560x1440. Can I expect, that this will be displayed in a much better way with DisplayLink Manager 1.3.1? If yes, I can't wait for it. Is a beta available? :)
When using RDM, I can choose this resolution, but not with HiDPI :(.