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.