*** This bug is a duplicate of bug 1857383 ***
    https://bugs.launchpad.net/bugs/1857383

Actually I think bug 1857383 already covers this issue so let's use
that.

** This bug has been marked a duplicate of bug 1857383
   Fractional scaling applies to both monitors when you only want it on one

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https://bugs.launchpad.net/bugs/1900873

Title:
  dual display scaling broken at 4k

Status in gnome-control-center package in Ubuntu:
  Incomplete
Status in mutter package in Ubuntu:
  Incomplete

Bug description:
  I have to 4k monitors.

  15" on the dell xps             3840/2160/60
  40"  philips external BDM4065   3840/2160/30

  Obviously i need different scale factors to use them properly.
  This feature DOES NOT WORK.

  It seems the scaling is not handled separately per monitor as the UI suggests.
  The fractional scaling also does not seem to work. any change to the scaling 
ends seems to be rounded to full.
  Which meens a compromise scale of 125% is effectively 200% on the large 
monitor.

  I havent found any config which would make this useful.

  So basically when I use the external 40" I cannot use the builtin anymore 
  without an external fresnell magnifier lens (which I dont have ;)

  
  updated Ubuntu 20.04.1 LTS on DELL XPS 7590 

  Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
  32GB  SODIMM DDR4 Synchronous 2667 (0.4ns)
  PCI bridge: NVIDIA TU117M [GeForce GTX 1650 Mobile / Max-Q]
  Hostbridge: Intel UHD Graphics 630 (Mobile)

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gnome-control-center 1:3.36.4-0ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
  Uname: Linux 5.4.0-48-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.9
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Oct 21 17:35:12 2020
  InstallationDate: Installed on 2020-04-22 (181 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  SourcePackage: gnome-control-center
  UpgradeStatus: No upgrade log present (probably fresh install)

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