It appears you are stuck in recovery mode, which prevents most graphics
drivers from working properly ("nomodeset"):

[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic
root=UUID=d2f3f98a-d42e-4ba5-8bcf-95d318ad089b ro recovery nomodeset

To fix this, reboot and as soon as the screen turns purple, tap Escape
once (and only once). Then choose Advanced options and select the normal
(not the recovery) kernel.

** Package changed: xorg (Ubuntu) => ubuntu

** Changed in: ubuntu
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1769450

Title:
  proper display panel missing, second monitor mirrored

Status in Ubuntu:
  Invalid

Bug description:
  While I don't believe the initial upgrade to Bionic caused this, a
  series of power outages later (+4 in 2 days) and some possible data
  corruption, I no longer have the full display manager available, my 2
  displays are mirrored (no option to change) and are running in less
  than optimal resolution (no option to go higher). Previously working
  fine with "stretched" display using onboard AMD graphics and standard
  Ubuntu driver.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu7
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  .tmp.unity_support_test.1:
   
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  Date: Sun May  6 07:19:16 2018
  DistUpgraded: Fresh install
  DistroCodename: bionic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] RS880 [Radeon HD 4250] [1002:9715] 
(prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. M5A88-V EVO [1043:843e]
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic 
root=UUID=d2f3f98a-d42e-4ba5-8bcf-95d318ad089b ro recovery nomodeset
  Renderer: Software
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/09/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1501
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M4A88TD-M/USB3
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1501:bd08/09/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A88TD-M/USB3:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.family: To Be Filled By O.E.M.
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
  version.libdrm2: libdrm2 2.4.91+git1805020630.1ac3ec~oibaf~b
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.2~git1805051930.2f1ad7~oibaf~b
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.2~git1805051930.2f1ad7~oibaf~b
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
  xserver.bootTime: Sat May  5 23:00:10 2018
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        Primax Kensington Eagle Trackball MOUSE, id 8
   input        Darfon USB Combo Keyboard KEYBOARD, id 9
   input        Darfon USB Combo Keyboard KEYBOARD, id 10
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.19.6-1ubuntu4

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