HiDPI Ubuntu 18.04 Parallels

Ubuntu 18.04 running in Parallels using Retina will be either blurry or too small.

The setting to enable 200% in Ubuntu settings is missing.  Force it by doing the following: (whole numbers only)

gsettings set org.gnome.desktop.interface scaling-factor 2

Then reboot.

If you have a similar problem but don't have a Retina display, you may be interested in the following experimental feature:

gsettings set org.gnome.mutter experimental-features "['scale-monitor-framebuffer']"
This allows fractional scaling in Ubuntu 18.04.

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