Unfortunately, not for me. We have a bunch of (theoretically) identical
computers in a new classroom, and on one of them this issue is present.
Similarly as described by Carsten Gräser (graeser): last entry in
kern.log, running fan and no reaction to either keyboard or power
button, last message on screen being

A start job is running for Hold until boot process finishes up (21s / no
limit).

Only the power button is blinking, not steady, and with addition of
similar problems at the shutdown (NOT at the reboot, except for the long
delay). It seems that the system thinks from certain gauges that it is
suspended or powered down, but some part of it is not. Last message for
the failed shutdown is

reboot: Power down

and then everything stays as if there would be the classic message "It's
now safe to power off Your computer", with screen on and fan running.

To reinstate, installing the upstream kernel 4.19.1 did not help on this
issue. Some 30 PCs of identical hardware do not have this problem.

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1801743

Title:
  Suspend fails in Kubuntu 18.04 but works fine in Kubuntu 17.10

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After upgrading to kubuntu 18.04 resuming from suspend fails in most
  cases on my laptop. When trying to resume the power LED is turned on,
  but the screen stays black and the system does not respond at all.
  Switching to another virtual terminal is not possible and closing the
  lid again does not show any effect. The hardware is a Dell Latitude
  e7440 with core i7 4600U and intel graphics only. The only way to
  change the status is a hard shut-down by long pressing the power
  button. The last message in kern.log is:

  PM: suspend entry (deep)

  The described problem is similar to bug #1774950. However, the latter
  is considered to be fixed with kernel 4.15.0-38 while my problem
  persists with this kernel.

  Output of 'sudo lspci -vnvn' is attached, the result of 'cat
  /proc/version_signature' is:

  Ubuntu 4.15.0-38.41-generic 4.15.18
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  graeser    2116 F.... pulseaudio
   /dev/snd/controlC0:  graeser    2116 F.... pulseaudio
  CurrentDesktop: KDE
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see 
http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-precise-amd64-20130203-1
  DistroRelease: Ubuntu 18.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=none
  InstallationDate: Installed on 2014-03-20 (1690 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 
20130203-13:50
  MachineType: Dell Inc. Latitude E7440
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic 
root=UUID=25e09413-4977-401f-a034-0465b444518b ro quiet splash vt.handoff=1
  ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-38-generic N/A
   linux-backports-modules-4.15.0-38-generic  N/A
   linux-firmware                             1.173.1
  Tags:  bionic
  Uname: Linux 4.15.0-38-generic x86_64
  UpgradeStatus: Upgraded to bionic on 2018-10-15 (20 days ago)
  UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 02/02/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A14
  dmi.board.name: 0WK2DM
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA14:bd02/02/2015:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn0WK2DM:rvr:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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