wbug: With Bug
wnbug: With No Bug

git bisect start '--term-old=wbug' '--term-new=wnbug' '--' 
'drivers/gpu/drm/vmwgfx' 
# wbug: [62e9ccfaaedffd057e921fca976f9f7f71c9b254] Linux 4.16.18 
git bisect wbug 62e9ccfaaedffd057e921fca976f9f7f71c9b254 
# wnbug: [37efe80ce85f76b3b30d7b4ea40550e6a5a5b71a] drm/vmwgfx: use monotonic 
event timestamps 
git bisect wnbug 37efe80ce85f76b3b30d7b4ea40550e6a5a5b71a 
# wbug: [7928b2cbe55b2a410a0f5c1f154610059c57b1b2] Linux 4.16-rc1 
git bisect wbug 7928b2cbe55b2a410a0f5c1f154610059c57b1b2 
# wbug: [aa64b3f18aeb2cc4b74e69115df434147f1ed96c] drm/vmwgfx: Move screen 
object page flip to atomic function 
git bisect wbug aa64b3f18aeb2cc4b74e69115df434147f1ed96c 
# wnbug: [dc366364c4ef809dccd063919314301f8ba01ac2] drm/vmwgfx: Fix multiple 
command buffer context use 
git bisect wnbug dc366364c4ef809dccd063919314301f8ba01ac2 
# wnbug: [25db875401c8aaac31a6650cb80a56cc78852694] drm/vmwgfx: Cursor update 
fixes 
git bisect wnbug 25db875401c8aaac31a6650cb80a56cc78852694 
# wnbug: [904efd9e3f4c8f288b1279a316eed8e177190c8f] drm/vmwgfx: Send the 
correct nonblock option for atomic_commit 
git bisect wnbug 904efd9e3f4c8f288b1279a316eed8e177190c8f 
# wbug: [ac3069e67f5659131d7ac5f54d966005bbc40af8] drm/vmwgfx: Move the stdu 
vblank event to atomic function 
git bisect wbug ac3069e67f5659131d7ac5f54d966005bbc40af8 
# first wnbug commit: [904efd9e3f4c8f288b1279a316eed8e177190c8f] drm/vmwgfx: 
Send the correct nonblock option for atomic_commit

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1832138

Title:
  Login screen never appears on vmwgfx but installing kernel >=
  v4.17-rc1 (or using WaylandEnable=false) fixes it

Status in linux package in Ubuntu:
  Invalid
Status in mutter package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  In Progress
Status in mutter source package in Bionic:
  Incomplete
Status in linux source package in Eoan:
  Invalid
Status in mutter source package in Eoan:
  Invalid

Bug description:
  I'm running Ubuntu 18.04.2 desktop in a virtual machine under VMWare
  Fusion Pro V11.1.0 on MacOS Mojave 10.14.5, all on a 15inch 2018
  Macbook Pro.

  I've been running this Ubuntu 18.04.2 VM without problem for many months 
without problem.
  Yesterday, I did 'sudo apt update; sudo apt upgrade'.  Upon rebooting, the 
system hangs immediately after displaying the splash screen.  I never see a 
login screen.  And I can't use Ctrl+Alt+F2 to navigate to a console/tty login.

  I can SSH into the system however.

  I've found that I can work around the hang/freeze if I uncomment the 
following line in /etc/gdm3/custom.conf;
  #WaylandEnable=false

  After uncommenting the WaylandEnable=false line and rebooting, then I
  see the login prompt as expected and I can then log in and use the
  system normally again.

  After the 'apt upgrade' my system is running linux kernel 4.15.0-51,
  as shown in this 'uname -a' output;

  Linux ubuntuvm1 4.15.0-51-generic #55-Ubuntu SMP Wed May 15 14:27:21
  UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

  lsb_release -a output;

  No LSB modules are available.
  Distributor ID:       Ubuntu
  Description:  Ubuntu 18.04.2 LTS
  Release:      18.04
  Codename:     bionic

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu7.1
  ProcVersionSignature: Ubuntu 4.15.0-51.55-generic 4.15.18
  Uname: Linux 4.15.0-51-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CompositorRunning: None
  Date: Sun Jun  9 12:38:37 2019
  DistUpgraded: Fresh install
  DistroCodename: bionic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GpuHangFrequency: This is the first time
  GraphicsCard:
   VMware SVGA II Adapter [15ad:0405] (prog-if 00 [VGA controller])
     Subsystem: VMware SVGA II Adapter [15ad:0405]
  InstallationDate: Installed on 2018-05-06 (399 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  MachineType: VMware, Inc. VMware Virtual Platform
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-51-generic 
root=/dev/mapper/ubuntu--vg-root ro splash net.ifnames=0
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/13/2018
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: 6.00
  dmi.board.name: 440BX Desktop Reference Platform
  dmi.board.vendor: Intel Corporation
  dmi.board.version: None
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 1
  dmi.chassis.vendor: No Enclosure
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd04/13/2018:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
  dmi.product.name: VMware Virtual Platform
  dmi.product.version: None
  dmi.sys.vendor: VMware, Inc.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.95-1~18.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  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

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