Public bug reported:

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 
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: 
       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:    
Distributor ID: Ubuntu
Description:    Ubuntu 18.04 LTS
Release:        18.04
Codename:       bionic

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Tags: bionic

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  Ubuntu 18.04 Video Crash on Suspend/Hibernate

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