Bug#1082003: screen lock not installed or doesn't work?

[Ian Jackson]

Package: task-xfce-desktop
Version: 3.75

I installed trixie yesterday, using the netinst d-i image.
I selected task-xfce-desktop in tasksel.

At the end of the install I replaced systemd with sysvinit as per the
wiki instructions:
https://wiki.debian.org/Init#Changing_the_init_system_-_at_installation_time

Now, whenever I close the laptop lid, it tries to start a screen
locker. But this doesn't work. It puts up a dialogue box saying that

Noen of the screen lock tools ran successfully,
the screen will not be locked

I had to copy type this error message.

I suspect the problem is that no suitable screen lock tool is
installed, which is why I'm filing this bug against task-xfce-desktop.
I don't know where to look for logs. I found .xsession-errors.
Nothing there looks very relevant but I have attached it anyway.

I'm about to completely replace my personal desktop configuration with
my longstanding dotfiles, and reconfigure everything, after which I
expect this bug no longer to affect me. I'm reporting it because I
wanted to help other users.

Thanks for your attention.

Ian.

[Ian Jackson]

FTR, changing the power management settings for "On lid close" to
"Suspend" (in the power management settings from the XFCE tray battery
icon in the top right) resulted in successful suspend/resume.

So think probably the bug is that the intended screen locker/saver
isn't installed, or maybe that it's not wired up properly somehow.

Ian.