*** This bug is a duplicate of bug 1869750 ***
    https://bugs.launchpad.net/bugs/1869750

** This bug is no longer a duplicate of bug 1870758
   [nvidia] Display scaling results in a blank screen (power save state)
** This bug has been marked a duplicate of bug 1869750
   [nvidia] Screens turn off when setting display scaling to 200%

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https://bugs.launchpad.net/bugs/1870929

Title:
  [nvidia] Display Scaling causes monitors to sleep

Status in mutter package in Ubuntu:
  New
Status in nvidia-graphics-drivers-440 package in Ubuntu:
  New

Bug description:
  Default install  of Focal Fossa 20.04 Beta downloaded April 4, 2020.

  Steps to Reproduce:
  1. Open Settings
  2. Navigate to Displays.
  3. In Scale section, select `200%`
  4. Click Apply
  Expected behavior: Screens refresh with a 200% scale applied and a dialog to 
confirm.
  Error encountered: Screens switch to "power saving mode" (go blank).  After 
about 15 seconds, they wake up in the original 100% scale mode.

  Other notes:
  I have done this successfully with 18.04 on the exact same hardware 
(different hard drive partitions) in the past after installing NVidia drivers.
  I have successfully rearranged the monitors in Settings and changed the 
Primary Display in Settings with this install.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: xorg 1:7.7+19ubuntu14
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia wl
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.suspend: suspend hibernate resume
  .proc.driver.nvidia.suspend_depth: default modeset uvm
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  440.64  Fri Feb 21 01:17:26 
UTC 2020
   GCC version:  gcc version 9.3.0 (Ubuntu 9.3.0-8ubuntu1)
  ApportVersion: 2.20.11-0ubuntu22
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Apr  5 10:09:14 2020
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  DkmsStatus:
   bcmwl, 6.30.223.271+bdcom, 5.4.0-21-generic, x86_64: installed
   nvidia, 440.64, 5.4.0-21-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   NVIDIA Corporation TU106 [GeForce RTX 2070 Rev. A] [10de:1f07] (rev a1) 
(prog-if 00 [VGA controller])
     Subsystem: eVga.com. Corp. TU106 [GeForce RTX 2070 Rev. A] [3842:2173]
  InstallationDate: Installed on 2020-04-05 (0 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
  MachineType: Micro-Star International Co., Ltd. MS-7B17
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic 
root=UUID=a4cb80c1-f367-4150-afd3-31e3ee90bd50 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/25/2019
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.50
  dmi.board.asset.tag: Default string
  dmi.board.name: MPG Z390 GAMING PRO CARBON (MS-7B17)
  dmi.board.vendor: Micro-Star International Co., Ltd.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Micro-Star International Co., Ltd.
  dmi.chassis.version: 1.0
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1.50:bd03/25/2019:svnMicro-StarInternationalCo.,Ltd.:pnMS-7B17:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMPGZ390GAMINGPROCARBON(MS-7B17):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:
  dmi.product.family: Default string
  dmi.product.name: MS-7B17
  dmi.product.sku: Default string
  dmi.product.version: 1.0
  dmi.sys.vendor: Micro-Star International Co., Ltd.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.100-4
  version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.2-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20190815-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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