https://bugs.kde.org/show_bug.cgi?id=427278
Bug ID: 427278
Summary: Panel & desktop config of secondary monitor lost after
ScreenConnectors renumbering
Product: plasmashell
Version: 5.18.5
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Multi-screen support
Assignee: aleix...@kde.org
Reporter: genpfa...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
SUMMARY
------------------------
The panel and desktop configruation of a monitor can get 'lost' after a
ScreenConnectors renumbering, requiring manual editing of plasmashellrc to
restore.
STEPS TO REPRODUCE
------------------------
On my dual-monitor setup ~/.config/plasmashellrc looks like this:
[ScreenConnectors]
0=DisplayPort-0
1=DisplayPort-1
DisplayPort-0 is the left display, DisplayPort-1 on the right.
1. Starting x0tigervncserver and connecting from another computer with TigerVNC
Viewer 1.11.0 & the "Resize remote session to the local window" option checked
ends up with DisplayPort-0 being resized to 800x600 and DisplayPort-1 being
shut off. plasmashellrc ends up looking like this:
x0tightvncserver
[ScreenConnectors]
0=:0.0
1=DisplayPort-0
2=DisplayPort-1
No idea where :0.0 came from during that but it's apparently the primary
connector now.
2. Disconnecting from VNC & and using the "Display Configuration" applet to
re-enable & re-arrange both monitors like they were before gives me:
[ScreenConnectors]
0=DisplayPort-0
1=:0.0
2=DisplayPort-1
OBSERVED RESULT
------------------------
Now the panel/desktop config for slot 1 is 'lost', stuck on :0.0.
DisplayPort-1 ends up using a default panel & desktop config.
I didn't see an obvious way to fix this situation in any of the System Settings
applets. Editing plasmashellrc to put DisplayPort-1 back on slot 1 like it was
in step #1 and restarting plasmashell restores the 'lost' panel/desktop config
for DisplayPort-1.
EXPECTED RESULT
------------------------
Ideally once I set things back up in the "Display Configuration" applet then
DisplayPort-1 would end up back on slot 1 somehow and my panel/desktop config
for that monitor would be restored.
SOFTWARE/OS VERSIONS
------------------------
Kubuntu 20.04, amd64
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.4.0-45-generic
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