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)