https://bugs.kde.org/show_bug.cgi?id=514765
Bug ID: 514765
Summary: Incorrect maximized borderless window size after
display wakeup
Classification: Plasma
Product: kwin
Version First unspecified
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 188625
--> https://bugs.kde.org/attachment.cgi?id=188625&action=edit
borderless window inside plasma panel
SUMMARY
A maximized borderless window ends up inside the Plasma panel if the display is
turned off and then turned on (see attached screenshot). This does not always
happen; however, I have found a specific reproducible condition that triggers
this behavior every time.
STEPS TO REPRODUCE
You will need two monitors. In my case, HDMI-A-1 (right) is the primary
monitor, and HDMI-A-2 is the secondary monitor (see screenshot for my
configuration). Also, enable "Turn off screen - When locked: Immediately" in
Power Management.
1. Place a maximized borderless window on the secondary monitor. It will not
overlap with the panel at this stage (I was using Firefox).
2. Move the mouse to the primary monitor and click once to make the borderless
window inactive.
3. Press the lock screen shortcut. Both screens will lock and then immediately
turn off.
4. Move your mouse to wake the screens. Notice that the cursor suddenly warps
to the secondary monitor, even though it was on the primary one before. Enter
your password to unlock the screen.
5. Observe that the Firefox window is now inside the Plasma panel.
SOFTWARE/OS VERSIONS
Operating System: NixOS 26.05
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.12.64-xanmod1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 9 6900HX with Radeon Graphics
Memory: 32 GiB of RAM (30.6 GiB usable)
Graphics Processor: AMD Radeon RX 6650M
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