Bug 428052

I work everyday using KDE, and 2 times per week, this error appear. Sometimes, when it happens, discord minimized icon get duplicated on both panel (both screen) but the minimization animation goes always to the other screen.
Also note that I manually invert the position from both monitors, so KDE rearrange them on login (but it seems that sometimes fail like the video).

Is this X11 or Wayland?

x11

Does this happen only with Discover, or with other apps? Can you test with Dolphin and a non-KDE app like Firefox or Chromium?

it happens with ALL programs. It's like the panel get inverted between the 2 screens, and some app like discord, get duplicated on both panels.

Note that I have checked the option "show only icons from current screen", but when this bug appear, it seems to get ignored, or a swap between screens.

How odd. Thanks for the additional info.

Today at boot, all notification started to appear on the second monitor, the first one shows a black background, but correct widgets, and all new windows starts to appear as programs from the second monitor. No minimized icons on the first one, ignoring my manual windows rearrangement. There's a serious problem when using 2 panels with two different task manager, showing different monitors.

Created attachment 132929 [details]
inverted monitors manually

I attached what I changed in my monitors, because my physical arrangement.
Today it appear again at fresh boot, and it seems that the applications are ignoring that configuration when spawning windows

why the status is marked as "need info"? what do you need?

All good, thanks.

Today, it get worse. Both monitor get inverted like the attached image "inverted monitors manually". But this time, they get totally inverted, not only panels. I just need to go to that menu again, and change the position manually to actually represent my monitor arrangement. Also my 165htz goes to 60. It seems that the menu forgot all my monitor configs.

Today, the 2 screen get partially merged, and one background screen can sometimes appear on the second one. Also, all notifications and program appear on the wrong screen. A quick fix is to reboot session 1 or 2 times, and then it work for a week or so.

I managed to capture a video (notice that one screen is black because the background merged on the second screen):

https://youtu.be/xMm27C9m8b0


Operating System: KDE neon 5.20
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-58-generic
OS Type: 64-bit
Processors: 6 × Intel® Core™ i5-8400 CPU @ 2.80GHz
Memory: 22.9 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630

Created attachment 137587 [details]
notifications also affected

this problem appear almost 100% If I don't use the pc form more than 2 or 3 days, but if I reboot or grub to windows and back, I cannot reproduce it

*** Bug 424163 has been marked as a duplicate of this bug. ***

*** Bug 438208 has been marked as a duplicate of this bug. ***

window minimization and the calculation of where to locate the animation are done by KWin; moving there.

Problem continues... and I have to reboot 3 or 4 times everyday until the screens decide to select the correct monitor. Very frustrating.

Operating System: KDE neon 5.22
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.3
Kernel Version: 5.11.0-37-generic (64-bit)
Graphics Platform: X11
Processors: 6 × Intel® Core™ i5-8400 CPU @ 2.80GHz
Memory: 22.9 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630

(In reply to Franco Pellegrini from comment #18)
> Problem continues... and I have to reboot 3 or 4 times everyday until the
> screens decide to select the correct monitor. Very frustrating.

I can offer a better workaround: run `kquit5 plasmashell && kstart5 plasmashell` to restart plasma.

The issue seems to stems from the fact X11 has not specified order in which screens are declared and plasma expect this ordering to be constant. This concerns Wayland as well for the same reason.

I am having the same issue however, windows will seem to minimize to whichever task manager I last interacted with. For example, if I were to unpin and pin a random icon in the task manager on my left (secondary) monitor then all minimize window animations will go to that screen and if I unpin and pin on my right (primary) monitor, they will always animate to minimize there. Although, sometimes this randomly gets swapped every now and then.

Problems continues. When boot, the main monitor background becomes black (but with panels), and all windows get minimized into the second monitor

Operating System: KDE neon 5.24
KDE Plasma Version: 5.24.1
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.3
Kernel Version: 5.13.0-30-generic (64-bit)
Graphics Platform: X11
Processors: 6 × Intel® Core™ i5-8400 CPU @ 2.80GHz
Memory: 22.9 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630

Same problem. When I connect the laptop to two external screen. There is a high change to reproduce.

Operating System: Arch Linux
KDE Plasma Version: 5.24.2
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.16.11-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-10210U CPU @ 1.60GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics

Should be helped by https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/1411

Yeah could you check again with Plasma 5.24.3 when it's released in three days?

(In reply to Nate Graham from comment #24)
> Yeah could you check again with Plasma 5.24.3 when it's released in three
> days?

problem continues with 5.24.3

Thanks.

the problem is 100% reproduced every day using x11

Operating System: KDE neon 5.26
KDE Plasma Version: 5.26.1
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.6
Kernel Version: 5.15.0-52-generic (64-bit)
Graphics Platform: X11
Processors: 6 × Intel® Core™ i5-8400 CPU @ 2.80GHz
Memory: 23.3 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: H310M H