https://bugs.kde.org/show_bug.cgi?id=430108
Bug ID: 430108
Summary: In Display Configuration KCM it is possible to set up
no primary screen, but not apply the configuration
Product: KScreen
Version: 5.20.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: o...@geek.co.il
Target Milestone: ---
SUMMARY
In previous versions of Plasma, when the Display Configuration UI had a
drop-down to select the primary display, one of the options was "No Primary
Display". With the new Display Configuration (at least from 5.18, I believe)
the primary display selection is a checkbox on each device, which - when
checked in a device configuration - automatically unchecks the "primary"
checkbox on all other devices, but the "primary" checkbox cannot be unchecked
manually - clicking it again doesn't do anything.
But double clicking the "primary" checkbox can uncheck it, though that does not
enable the "Apply" button, so that configuration cannot be applied.
STEPS TO REPRODUCE
1. Have multiple monitors connected.
2. Make sure one of the devices has the "primary" checkbox checked.
3. Double click the "primary" checkbox.
OBSERVED RESULT
The checkbox gets cleared, but this configuration cannot be applied.
EXPECTED RESULT
Probably the checkbox should not be cleared.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
KDE Plasma Version: 5.20.80
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.1
ADDITIONAL INFORMATION
I expect that this is a minor UI issue and the correct behavior is that there
always must be a primary screen (unlike as it was in older Plasma versions).
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