https://bugs.kde.org/show_bug.cgi?id=367715

            Bug ID: 367715
           Summary: Plasma fails to initialize properly 90% of the time on
                    two-screen setup
           Product: plasmashell
           Version: 5.7.3
          Platform: Neon Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Multi-screen support
          Assignee: aleix...@kde.org
          Reporter: tin.blasko...@gmail.com
                CC: plasma-b...@kde.org

Hey devs,

would be appreciated if you could take a look at this problem. So this happens
almost every time after logging into a plasma session:
* one of the screens stays uninitialized, still showing the splashscreen
* the panels, which were setup one on each screen, are now opened one atop
another on the other (properly initialized) screen
* the uninitialized screen is unusable (windows dragged over it leave trails,
right-click on the desktop/background shows no context menu)

The problem can be fixed by going to Settings -> Display and monitor, doing a
disable/apply/enable/apply on the uninitialized screen. After that, all of the
panels usually move to the newly enabled screen so they have to be rearranged
again. Sometimes after the enabling the screen, plasma also crashes (the panel
shows a crash icon). I can send the trace if it's any help.

Please see the screenshot illustrating the problem here:
https://drive.google.com/file/d/0BxkpASF8KtrhVGMwZmhpb3QzbUE/view?usp=sharing

Reproducible: Sometimes

Steps to Reproduce:
External monitor connected to a laptop and just login normally.

Actual Results:  
One of the screens, usually the laptop screen, stays uninitialized - showing a
splashscreen with an uncompleted progress bar. The panels are stacked one atop
another on the initialized screen. When dragging windows on the uninitialized
screen, the background is not refreshed (i.e. the dragged windows leave a trail
behind them).

Expected Results:  
Both screens initialized with panels on each screen as they were setup in the
previous session.

Running latest KDE Neon User (all updates applied).

The laptop has two gfx chipsets (intel & nvidia) - nvidia is disabled, running
with i915 driver/module.

The monitor is connected via HDMI (laptop side) -> DVI (monitor side) cable.

I can send further info if needed.

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