Desktop rectangular white area top left

Issues & Assistance
1

Hello, hope you all are doing fine!
Does anyone know why this happens?
I have Desktop slideshow on and soon after the computer is up and running a white rectangular shape in the top left of the screen appears.

When the picture changes, the white rectangular stays.

Desktop rectangular white area top left with arrow
Desktop rectangular white area top left with arrow3840×2160 1.46 MB

3

I’m sorry, what is that? Do I need to disable them or what do I do with Picom or Plank?

5

It doesn’t do anything either with left or right mouse click.

7

I don’t know if I have plank or picom installed, how do I check that?
Just typing this in fish doesn’t give any result:
❯ plank
fish: Unknown command: plank

~
❯ picom
fish: Unknown command: picom

~
❯ plank --help
fish: Unknown command: plank

~
❯ picom --help
fish: Unknown command: picom

9

Yeah, I can’t say exactly when it happened, but I have made everything more or less transparent.

I have now uninstalled my widgets but the transparency has been set in the system settings by me

Transparens window rule percent
Transparens window rule percent848×552 55.7 KB

Transparens window rule window type
Transparens window rule window type1920×1080 273 KB

and also for the start menu according to this site:

I set the start menu transparency the same as in the site so my whole /usr/share/plasma/desktoptheme/default/plasmarc looks like this:
[Wallpaper]
defaultWallpaperTheme=Next
defaultFileSuffix=.png
defaultWidth=1920
defaultHeight=1080

[ContrastEffect]
enabled=true
#enabled=false
contrast=2.0
intensity=0.4
saturation=1.7

[BlurBehindEffect]
enabled=false

[AdaptiveTransparency]
enabled=true
#enabled=false

10

Ah, now I see them!
❯ sudo pacman -Ss plank
extra/plank 0.11.89-5
Elegant, simple, clean dock

~ 8s
❯ sudo pacman -Ss picom
cachyos/cachyos-picom-config 1.0.1-2
CachyOS picom config
cachyos/picom-ibhagwan-git 1578_Next.297.gc4107bb_2021.11.03-1
iBhagwan’s compton|picom fork (X compositor) with dual_kawase blur and rounded corners
extra/picom 11.2-1
A lightweight compositor for X11

I’m afraid to remove them, I’m afraid to break my system!

11

Another strange thing is that when I press Meta+D to show the desktop and toggle Meta+D, it shows the white rectangular box, then not, then show, then not, as I toggle.

I’m thinking that there should be some kind of widget or applet running, but I can’t see any when entering edit mode for the desktop.

Also, the white rectangular box is always gone when entering edit mode:

Enter edit mode
Enter edit mode1920×1080 147 KB

13

Yeah, I had to do that, revert everything I had done and see what step was causing the problem.

I actually found it, it was the window rule ‘Inactive opacity’ that caused the problem, thank you for helping me along the way! :smile: