Jon Watte, thank you for reporting this and helping make Ubuntu better.

1) Regarding using kernel parameter:
acpi_rev_override=5

Could you please advise if you remove it altogether (i.e. perform a
default boot) what happens?

2) Regarding your attempt to blacklist nouveau, as per your log below, it isn't 
blacklisted:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1748511/+attachment/5052050/+files/Lspci.txt

Hence, you may want to disable it in BIOS, or physically pull it out of
the board so you don't have to maintain a blacklist effort.

3) Is this issue something that started to happen after an update? If
so, which one specifically?

4) If you login to an xorg session instead of a wayland session, is this
still reproducible?

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1748511

Title:
  Xorg crash

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Shortly after logging in for the first time, the screen goes black,
  and after a little while, I'm back at the login screen. A subsequent
  login puts me in "dumb software mode."

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: xorg 1:7.7+19ubuntu3
  ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
  Uname: Linux 4.13.0-32-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Feb  9 10:45:29 2018
  DistUpgraded: Fresh install
  DistroCodename: artful
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Device [8086:591b] (rev 04) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:07be]
     Subsystem: Dell GP107M [GeForce GTX 1050 Mobile] [1028:07be]
  InstallationDate: Installed on 2018-02-09 (0 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  MachineType: Dell Inc. XPS 15 9560
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-32-generic.efi.signed 
root=UUID=4305e654-6011-4413-ac27-724450f22361 ro quiet splash 
acpi_rev_override=5 vt.handoff=7
  Renderer: Software
  SourcePackage: xorg
  Symptom: display
  Title: Xorg crash
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/30/2017
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.5.0
  dmi.board.name: 05FFDN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.5.0:bd08/30/2017:svnDellInc.:pnXPS159560:pvr:rvnDellInc.:rn05FFDN:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 15 9560
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.83-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~17.10.2
  version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~17.10.2
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20170309-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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