[ubuntu] Portrait resolutions question.

Hi all,

I hope I am in the correct forum for this. I run 14.04 in a VM on a portrait rotated monitor. I can't find any resolutions that match it in display, as I would like to have it displayed as 1080x1920. When I run 'xrandr' I get the list of resolutions, but none are what I'm after. When I check Displays, I get the same list of resolutions.

Can anyone please point me in the right direction?

Thanks in advance,

Steve