After a bit more troubleshooting, working with xrandr and the xorg.conf
doesn't seem to have any effect when on the tty, and xrandr throws a
cannot connect to display error.

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https://bugs.launchpad.net/bugs/1888167

Title:
  Unable to Login

Status in xorg package in Ubuntu:
  New

Bug description:
  Currently I'm using a 4K AOC monitor on 20.04 LTS with a DisplayPort
  cable.

  Normally, there is a gear widget in the lower right corner of the
  screen that allows me to select between XServer and Wayland. This gear
  is missing. Switching to an HDMI cable corrects the issue but doesn't
  allow the display to work at higher than 30hz.

  Additionally, attempting to login throws a session error which hangs.
  You need to switch to a separate tty to do anything.

  The specific error is a popup right after entering your password.

  This is the text:

  Error found when loading /home/user/.xprofile:
  warning: output HDMI-A-1 not found: ignoring
  X Error of failed request: BadRROutput (invalid Output parameter)
  Major opcode of failed request: 140 (RANDR)
  Minor opcode of failed request: 15 (RRGetOutputProperty)
  Serial number of failed request: 37
  Current serial number in output stream: 37

  As a result the session will not be configured correctly.
  You should fix the problem as soon as feasible. <OK button>

  Mouse and Keyboard are fully unresponsive except for the magic keys
  (switching TTY and various other kernel functions).

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: xorg 1:7.7+19ubuntu14
  ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
  Uname: Linux 5.4.0-40-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: skip
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jul 19 17:55:47 2020
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  ExtraDebuggingInterest: No
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 
450/455/460/555/555X/560/560X] [1002:67ef] (rev e5) (prog-if 00 [VGA 
controller])
     Subsystem: XFX Pine Group Inc. Polaris 21 XL [Radeon RX 560D] [1682:956d]
   Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / 
Radeon Vega Mobile Series] [1002:15dd] (rev c6) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Raven Ridge [Radeon Vega Series / Radeon 
Vega Mobile Series] [1043:876b]
  InstallationDate: Installed on 2020-04-26 (84 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  MachineType: System manufacturer System Product Name
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic 
root=/dev/mapper/hostname--vg-base ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/14/2020
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2202
  dmi.board.asset.tag: Default string
  dmi.board.name: PRIME B450-PLUS
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr2202:bd07/14/2020:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEB450-PLUS:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.sku: SKU
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.101-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2
  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+git20200226-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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