After update to 11.5.1 only 1920x1080

[slawrence]

Originally Posted by tommiy

The other option is to use switchresx, quickres, rdm etc to get the other resolutions but again at low res.

For my setup (M1 13" MacBook Pro running 11.5.1 with StarTech branded DisplayLink Hub and Samsung U28E590 4K monitor) I am able to get the other resolutions you mention at low res without installing any other software -- I just need to hold 'option' while clicking the 'scaled' option in order to see other available resolutions including (but not limited to) 3480x2160 (low resolution) and 2560x1440 (low resolution).