I've degraded the kernel from 4.19.8 back to 4.14.41. This was suggested
by several people and for them, it fixed the problem. With the degraded
kernel I am able to suspend, but not hibernate. If the computer is left
unattended and hibernates, the same response is seen as described above.

Still not able to find a way to turn off suspend and hibernation
permanently.

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https://bugs.launchpad.net/bugs/1807264

Title:
  Ubuntu 18.04 Video Crash on Suspend/Hibernate

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After updating to 18.04 when the system automatically
  suspends/hibernates after non-use, the screen goes black, but will not
  wake up by taping the space bar, nor does it display the hibernation
  screen. Additionally, I'm using two screens the laptop and an external
  monitor connected with the Mini Display port. When required to come
  out of suspend, each screen behaves differently. The laptop screen
  flashes while the external monitor may show any of these: 1)
  background screen image with no tool bars or menu; 2) remains black;
  or 3) shows a gray image. The only way to recover is to reboot, either
  by holding the power button or Ctrl-F1 to log back into the system and
  use the reboot command; only the external monitor will recover to a
  terminal screen.

  Upgrading the kernel from 4.15 thru 4.19 does not change the
  suspend/hibernation issue. It seems to be video related issue, since
  HDMI port reacts differently than the Mini Display port, in that
  device settings do not operate the same and changing the settings can
  cause the same type of screen crash. Additionally, trying NVIDIA
  drivers will help with the suspend/hibernation problem and allows the
  hibernation screen to show, but is not a cure. Sometimes the NVIDIA
  drivers will allow it to come back from hibernation and sometimes not.
  My suspicion is that the drivers are not correct for the Intel video
  card.

  I am also flummoxed by the fact that I cannot control
  suspend/hibernation. There is no obvious way to keep the system from
  suspending. Screen lock is OFF. Automatic suspend is OFF. Power button
  suspend is OFF. There needs to be more control; the ability to
  eliminate any and all suspend operations is a must! With this type of
  control, I could have kept if from suspending until a fix is
  generated.

  Reports are as follows:

  - lspci:
  00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 09)
  00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated 
Graphics Controller (rev 09)
  00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 
09)
  00:04.0 Signal processing controller: Intel Corporation Haswell-ULT Thermal 
Subsystem (rev 09)
  00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
  00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
  00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
  00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 1 (rev 
e4)
  00:1c.3 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev 
e4)
  00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
  00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
  00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI 
mode] (rev 04)
  00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
  00:1f.6 Signal processing controller: Intel Corporation 8 Series Thermal (rev 
04)
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  - ubuntu-bug linux: Problem in linux-image-4.19.17-041907-generic
  cannot be reported, this report is about a package that is not
  installed

  - cat /proc/version_signature > version.log: cat: /proc/version_signature: No 
such file or directory
  - sudo lspci -vnvn > lspci-vnvn.log: (no response)

  - lsb_release -rd: Ubuntu 18.04 LTS

  - apt-cache policy pkgname: N: Unable to locate package pkgname

  - sudo lshw -C display; uname -a; lsb_release -a; sudo dmidecode -t 1: 
    *-display                 
         description: VGA compatible controller
         product: Haswell-ULT Integrated Graphics Controller
         vendor: Intel Corporation
         physical id: 2
         bus info: pci@0000:00:02.0
         version: 09
         width: 64 bits
         clock: 33MHz
         capabilities: msi pm vga_controller bus_master cap_list rom
         configuration: driver=i915 latency=0
         resources: irq:42 memory:f7800000-f7bfffff memory:e0000000-efffffff 
ioport:f000(size=64) memory:c0000-dffff
  Linux tablet3 4.19.7-041907-generic #201812052010 SMP Wed Dec 5 20:11:58 UTC 
2018 x86_64 x86_64 x86_64 GNU/Linux
  LSB Version:  
core-9.20170808ubuntu1-noarch:printing-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
  Distributor ID:       Ubuntu
  Description:  Ubuntu 18.04 LTS
  Release:      18.04
  Codename:     bionic
  --- 
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 18.04
  InstallationDate: Installed on 2014-10-31 (1497 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 
(20140722.2)
  Package: linux (not installed)
  Tags:  bionic
  Uname: Linux 4.19.7-041907-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo video
  _MarkForUpload: True

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