Ubuntu 17.10 - Ultrawide 21:9 resolution on Wayland

I am having problem with setting up my ultrawide LG monitor - 21:9 option (2560x1080) isn't shown within display preferences.

I had this problem on previous versions as well but I was able to resolve it through xrandr but since new Ubuntu comes with Wayland I am stuck with 1920x1080. I am not sure how to fix this.

My machine has no dedicated graphic card just Intel card on processor:

Intel® Core™ i7-6600U CPU @ 2.60GHz × 4
Intel® HD Graphics 520 (Skylake GT2)

Solution 1:

Choose Xorg session at login, and your old method will work. I currently don't know a solution that works with Wayland.