After update to 11.5.1 only 1920x1080

[Bruce.M1]

Originally Posted by tommiy

4k monitors with M1 only provide you the ability to use FHD 1920x1080 on HiDPI. There is nothing else possible and yes for 4k monitors that means really large text. The other option is to use switchresx, quickres, rdm etc to get the other resolutions but again at low res. There is unfortunately no resolution to this problem with Displaylink. Refer to the thread here on displaylink regarding the topic. You can vote for requesting displaylink provide 2560x1440 HiDPI here but after 9 months and no replies I guess that it is very unlikely. Hope that helps.

Read the 2 threads. Looks like a lost cause having the issue addressed.

[tommiy]

Yes its extremely disappointing. I originally purchased a M1 with the expectation that a displaylink dock would enable 2 monitors at 2560x1440 and piggybacked a D6000 off the back of an elgato thunderbolt dock. I simply could not work with the 4k display being blurry all the time and there being no solution. I returned the M1 as a result and returned to using a intel MAC which handles multiple screens at one time. Unfortunately I was provided with a M1 yesterday and its unfortunate that nothing has changed. Although Displaylink has not responded in 9 months to the suggestion to even say its is not possible it would appear that its the logical outcome. I'd also suggested they opensource the code because there are alot of very smart people out there who may be able to address this as Displaylink more than likely make their money off licensing for the adapters rather than the driver itself. There has been no response to that either. So I guess the answer here is clear.

Glad the links were able to assist.

[tommiy]

Hmmm duplicate post so removing this one.