Public bug reported:

The first part of our work on better handling of HI-DPI screens got merged 
upstream in 3.32, but it's for wayland only
https://blog.3v1n0.net/informatica/linux/gnome-shell-fractional-scaling-in-wayland-landed/

Since our default session in Ubuntu is based on xorg we would like to
distro patch the x11 equivalent for Disco so our users can benefit from
the feature.

Updates packages are up for testing in that ppa
https://launchpad.net/~3v1n0/+archive/ubuntu/mutter-x11-fractional-scaling

The main change is
https://launchpadlibrarian.net/415722066/mutter_3.32.0-1_3.32.0-1ubuntu1~xrandrscaling3.diff.gz

The ppa also includes a bugfix and a settings change to allow easy
configuration.

Note that the feature is behind an experimental gsettings key and the code has 
no impact on the rendering for users who don't enable it, which means it 
shouldn't be too risk. It's available as a opt-in for those who want to test it.
>From our testing it works fine and we feel like it's ready to be included. We 
>do plan to get that work merged upstream in the next cycle so it should be an 
>Ubuntu delta to carry over forever.

** Affects: gnome-control-center (Ubuntu)
     Importance: High
         Status: New

** Affects: gnome-shell (Ubuntu)
     Importance: High
         Status: New

** Also affects: gnome-control-center (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gnome-control-center (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1820850

Title:
  [FFe] Distro patch GNOME hi-dpi support for x11 sessions

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