Is this still happening on 18.04? I guess this could have been caused also by changing desktop (i.e. switching unity to gnome?).
** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1720465 Title: HiDPI scaling does not hold across reboot Status in gnome-shell package in Ubuntu: Incomplete Bug description: Running Ubuntu 17.10 Beta (updated as of 29 Sept 2017) on Parallels Desktop 13. When changing the HiDPI scaling to 200% everything looks good, but on restart the settings are reset to 100%. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1720465/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp