Ive just tried this again this morning

1. 2560 x 1440
2. 3840 x 2160
3. 1920 x 1200 

I set fractional scaling to 1.50 on screen 2 (Others 100%)

For the session it works perfectly fine, But after logging out and
logging back in the settings do not get saved (Nvidia gtx 1080 with 440
driver)

This was not working before, So I assume some updates have been made in
this area?

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https://bugs.launchpad.net/bugs/1873403

Title:
  [nvidia] Screen turns off when trying to set some fractional scaling
  values

Status in mutter package in Ubuntu:
  Confirmed
Status in nvidia-graphics-drivers package in Ubuntu:
  Confirmed

Bug description:
  When the nvidia driver is installed, the screen turns off when trying
  to set some fractional scaling values like 150%. And it stays off even
  after rebooting and logging in again.

  And from ssh I can see there's no current mode set anymore (just like
  in bug 1869750):

  $ xrandr
  Screen 0: minimum 8 x 8, current 960 x 600, maximum 16384 x 16384
  DVI-I-0 disconnected (normal left inverted right x axis y axis)
  DVI-I-1 disconnected (normal left inverted right x axis y axis)
  DP-0 disconnected (normal left inverted right x axis y axis)
  DP-1 connected primary (normal left inverted right x axis y axis)
     1920x1200     59.95 +  59.88

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: mutter 3.36.1-3ubuntu2
  ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30
  Uname: Linux 5.4.0-24-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Fri Apr 17 15:51:15 2020
  InstallationDate: Installed on 2020-02-03 (73 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124)
  SourcePackage: mutter
  UpgradeStatus: No upgrade log present (probably fresh install)

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