Black app's windows on lauching because of desk effects

[Arckaren]

While booting, when I launch any application, its windows is completely black, or invisible. To display it again, I have to disable the desk effects and re-enable them (so I type Ctrl+alt+F12 twice).

This bug affects applications like firefox, the settings but not Konsole, which could mean that it doesn’t impact applications from plasma ?

Thanks in advance.

[CMarch]

Hi @Arckaren, several people have had problems installing KDE/Plasma and fingers have been pointed at Wayland, Xprofile, Kwin, Xorg, composting, etc. Take a look at:

Installing Plasma defaults to Wayland

Hi, I have a strange issue, I installed Endeavour and then installed Plasma, removing Xfce as detailed Here and Here but end up being booted into a Wayland session where the windows don’t respond and the leaves artifacts everywhere. I have tried logging out and selecting an X session of Plasma but there isn’t one. Also, if I try to remove Wayland, it removes the entire desktop. Does anyone know what is going on? Thanks in advance

and

Xcompmgr in .xprofile

Hello. Love the experience so far, but as I was making my own adjustments I got a bit confused. There seems to be line xcompmgr & in .xprofile. Because the XFCE’s own compositor is also turned on, I’m wondering why it’s there? Thanks for your time.

for starters and search the forum for more info. My solution was to use the August ISO and let all the updates happen to bring my system up to date. Note, you may have to remove kalu to get a full update. Hopefully there is a hint that you can gleam that will not require a full reinstall. For instance locating .xprofile and deleting it. I never had a .xprofile or xcompmgr to begin with.

[DevNul]

I got that Plasma-Windows-Problem with the August-Installer. Commenting the Xcompmgr line in that .xprofile-file solved it for me.
It was this thread that helped me:

Compositing Not Working

I have it on my system but i have Radeon HD graphics. No problems. [rick@xfce-pc ~]$ pacman -Qs xcompmgr local/xcompmgr 1.1.8-1 Composite Window-effects manager for X.org [rick@xfce-pc ~]$ [Screenshot_2019-11-10_11-27-15] [Screenshot_2019-11-10_11-26-53]