https://bugs.kde.org/show_bug.cgi?id=468432
Bug ID: 468432
Summary: Plasma workspaces change the screen when a new monitor
is activated
Classification: Plasma
Product: plasmashell
Version: 5.27.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: a...@laxu.de
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
SUMMARY
When activating a third screen, the workspace and panel from the second screen
are moved to the third screen and the second screen gets the workspace and
panel of the previously inactive third screen.
STEPS TO REPRODUCE
Screen layout: | DP-3 | HDMI-1 | HDMI-0
Two screens active:
xrandr --output HDMI-0 --off
xrandr --output HDMI-1 --right-of DP-3 --auto
Activate the third screen:
xrandr --output HDMI-0 --right-of HDMI-1 --auto
OBSERVED RESULT
Two screen layout:
$ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
HDMI-0 connected (normal left inverted right x axis y axis)
1920x1080 60.00 + 50.00
1680x1050 59.95
1600x1200 60.00
1440x900 59.89
1280x1024 60.02
1280x960 60.00
1280x800 59.81
1280x720 60.00 50.00
1024x768 60.00
800x600 60.32 56.25
720x576 50.00
720x480 59.94
640x480 59.94
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis)
521mm x 293mm
1920x1080 60.00*+ 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis)
527mm x 296mm
1920x1080 60.00*+ 59.94 50.00
1680x1050 59.95
1440x900 74.98 59.89
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94 59.93
Three screen layout:
$ xrandr --output HDMI-0 --right-of HDMI-1 --auto
$ xrandr
Screen 0: minimum 8 x 8, current 5760 x 1080, maximum 32767 x 32767
HDMI-0 connected 1920x1080+3840+0 (normal left inverted right x axis y axis)
477mm x 268mm
1920x1080 60.00*+ 50.00
1680x1050 59.95
1600x1200 60.00
1440x900 59.89
1280x1024 60.02
1280x960 60.00
1280x800 59.81
1280x720 60.00 50.00
1024x768 60.00
800x600 60.32 56.25
720x576 50.00
720x480 59.94
640x480 59.94
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis)
521mm x 293mm
1920x1080 60.00*+ 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis)
527mm x 296mm
1920x1080 60.00*+ 59.94 50.00
1680x1050 59.95
1440x900 74.98 59.89
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94 59.93
EXPECTED RESULT
The third screen should be activated with the workspace assigned to the
inactive screen (or a new workspace if it is activated the first time)
SOFTWARE/OS VERSIONS
Operating System: Debian GNU/Linux 12
KDE Plasma Version: 5.27.2
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Graphics Platform: X11
Despite the output of xrandr, the graphics card has two DisplayPort and two
HDMI ports. I do not know why it lists DP-0 to DP-3. Maybe the HDMI ports are
listed as HDMI and DisplayPort?
ADDITIONAL INFORMATION
Bug 458916 is related and describes the workspace/panel dialog not always
storing the screen layout after correcting the issues caused by this bug. This
bug is probably the first step for solving it and easier to reproduce by using
the shell commands.
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