https://bugs.kde.org/show_bug.cgi?id=453930
Bug ID: 453930
Summary: Scaling is off with dual displays when the vertical
resolution is different
Product: KScreen
Version: 5.24.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: mca...@tecnoguru.com
Target Milestone: ---
SUMMARY
Scaling is messed up on dual displays when the vertical resolution is
different. I am using the proprietary drivers (this is the scenario I tested,
I'm not sure if it happens on other configurations). See the videos at
https://drive.google.com/drive/folders/10OBUr5NXY7KI1olIfcxr93bRQAGpJcR-
First video: The external monitor starts up at 3840x1080 (which matches the
vertical resolution of the laptop monitor). Setting it to the proper 5120x1440
results in scaling being completely off (contents of the laptop screen spill
over to the external monitor, and the bottom panel is off of the screen).
Dragging the mouse shows that the pointer coordinates are shifted down/right
from where the pointer is.
Second video: Same thing, but also setting the external monitor to be Primary.
In this case the scaling works correctly.
Third video: I did not press Keep after setting the external monitor as
Primary, so the configuration reverted. Now we have the opposite scaling
problem: the bottom of the screen is black and pointer coordinates are shifted
up/left.
OBSERVED RESULT
Scaling is completely off when the primary monitor has a lower vertical
resolution than the secondary monitor
EXPECTED RESULT
Scaling should work correctly
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro Plasma Daily 202205150340
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