[Bug 1982730] Re: Suspending Lubuntu when the "Lock Screen After" box is checked in XScreenSaver results in an error message about xdg-screensaver

[thedoctar]

Sorry, I thought xscreensaver-systemd would have been started by
systemd, because it was in the name, but I'm certain now it's started by
lxqt-session, as correctly determined by the original reporter.

** Package changed: systemd (Ubuntu) => lxqt-session (Ubuntu)

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Title:
  Suspending Lubuntu when the "Lock Screen After" box is checked in
  XScreenSaver results in an error message about xdg-screensaver

Status in lxqt-session package in Ubuntu:
  Confirmed

Bug description:
  Test hardware - HP Elitebook 8570p, 16 GB RAM, 1 TB SSD, 3rd gen i5
  CPU. Test was done within a GNOME Boxes VM, 2 GB RAM, 20 GB disk
  space, SeaBIOS.

  Steps to reproduce:

  1: Install Lubuntu 22.04 into a VM.
  2: Run "sudo apt update && sudo apt -y full-upgrade" to get the VM up-to-date.
  3: Reboot the VM.
  4: Open XScreenSaver, and check the "Lock Screen After" box.
  5: Close XScreenSaver.
  6: Click the Application Menu, hover over "Leave", and click "Suspend", then click "OK".

  Expected result:
  The VM should immediately go into sleep mode without any errors.

  Actual result:
  The screen goes black, then the following text appears on the screen:

      xscreensaver: XX:XX:XX: not launching hack (throttled.)
      xscreensaver: XX:XX:XX: LOCK CLientMessage received while already locked.

  If you move the mouse, an XScreenSaver prompt will appear asking for
  your username and password. If you simply leave the VM for long enough
  it will eventually go into suspend. If you sign in, the following
  error message will be present on the screen in a window:

      Failed to run  "xdg-screensaver lock". Ensure you have a
  locker/screensaver compatible with xdg-screensaver installed and
  running.

  Leaving the VM alone at this point will also eventually result in it
  going into suspend. Clicking the "OK" button on the error window will
  result in the VM immediately suspending.

  Notes:

  I don't actually know what package this should be reported against - I
  chose lxqt-session because a look at the LXQt source code revealed
  that it was possible that the "Suspend" button in the LXQt Application
  Menu was from lxqt-session. Other packages this bug might be in
  include XScreenSaver, liblxqt, lxqt-powermanagement, systemd, or
  whatever provides DBus (is that even provided by a package? *shrug*).

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: lxqt-session 0.17.1-0ubuntu1
  ProcVersionSignature: Ubuntu 5.15.0-41.44-generic 5.15.39
  Uname: Linux 5.15.0-41-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: LXQt
  Date: Mon Jul 25 02:04:25 2022
  InstallationDate: Installed on 2022-07-25 (0 days ago)
  InstallationMedia: Lubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
  SourcePackage: lxqt-session
  UpgradeStatus: No upgrade log present (probably fresh install)

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