https://bugs.kde.org/show_bug.cgi?id=450542

Simon B <sbutcher+b...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Product|kscreenlocker               |plasmashell
                 CC|                            |aleix...@kde.org
            Version|5.24.1                      |5.24.4
          Component|greeter                     |Multi-screen support
   Target Milestone|---                         |1.0

--- Comment #1 from Simon B <sbutcher+b...@gmail.com> ---
Having disabled the option to lock the screen on sleep, i realised this is not
a kscreenlocker_greet issue.
Workflow:
1) laptop with 2 monitors attached via usb c to Dell dock (e.g. WD19 but also
another Dell monitor with integrated usb c dock)
2) laptop display disabled, monitor display enabled.
3) set computer to sleep
4) remove usb C cable
5) wake laptop from sleep
6) black screen (although ctrl-alt-f2 shows a vty)
if i now plug the usb c cable back in, the display returns to the monitors, and
i can then remove the usb c dock cable and regain visible screen on the laptop
display.

so in summary, plasma doesn't recognise the display settings have changed when
resuming from sleep, unless i plug the dock back in again and remove it. this
is repeatable every time (and obviously an issue if you grab your laptop to go
to a meeting or a train journey when it is sleeping attached to the dock)

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