SUMMARY I have multi monitors configuration. Actually there are two displays. Main monitor and projector, which is positioned in "Display Configuration" at right side of monitor. Monitor has resolution 2560x1440 and projector has 1920x1080. Plasma session is running in X-Server. The issue is that, when I move mouse cursor into right top corner of my monitor happens nothing. Just assigned action doesn't work. Only to activate this action I need to move mouse cursor into right top corner of second display so screen of projector. In my opinion this is not intuitive. I work on main monitor and would like to get action in right top corner this display. Please notice that left top corner works well. BTW. Mouse cursor doesn't move on second screen after I move it into right top corner, because monitor has greater resolution than positioned at right side screen of projector. Additional problem is that, my projector is usually turned off or actually working in standby mode. I turn on it occasionally. Please notice even projector is turned off, but connected to my PC kwin/plasma sees it as normal display and even I switching my virtual desktops (I have 2) I can see it through split of second. I can move mouse cursor on this not visible desktop, I can move any window on it and sometime even some applications displays its window on this invisible screen. To be honest this is very annoying experience, because I have to choices in this moment. Either I can blindly catch window (holding left Alt) or just turn on projector and normally move window back to main monitor. Option to move window between displays is not available in task icon this window. I'n not sure if described here issue is that kwin/plasma gets incorrectly provided information about screen from xorg sever or the issue is somewhere in kwin/plasma. I didn't test this in Wayland session. STEPS TO REPRODUCE 1. to your PC connect any display and let kwin/Plasma recognize it 2. In "Display Configuration" place it at right side of your main monitor 3. turn off connected monitor, let it be in standby mode 4. in "Screen Edges" configure any action for right corner - I have "Show windows from all desktops" 5. Move mouse cursor into top right corner your main monitor OBSERVED RESULT happens nothing or cursor moves on second display if it has smaller or equal resolution like main screen. EXPECTED RESULT assigned activity should be run SOFTWARE/OS VERSIONS Linux/KDE Plasma: YES (available in About System) KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.70.0 Qt Version: 5.15 ADDITIONAL INFORMATION In Windows 7 and Windows 10 I didn't observe such strange behavior - not visible desktop for second display what is turned off (works in standy mode) is just not achievable at all. Only when I turn on it is achievable.
I tested Wayland session. I can say only that Behavior is the same. I suppose that here information about screens isn't get from xorg. Including issue that after very first login (new user) and very first run of any application it appears on not visible screen. Anyway I just started konsole which window appeared on projector screen which was not visible, because projector was turned off.
Maybe this is not a bug only intentional behavior, that after extension of desktop with another display, only the extreme corners worked and not this for current desktop bordering with second display. Anyway I expected that corners in current desktop work, and maybe I was wrong.
It sounds like neither xorg nor kwin_wayland recognize that the external monitor is off. Can you post the output of `kscreen-doctor -o` command after "turn off connected monitor, let it be in standby mode"?
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!