I finally had enough when Gnome 40 came out, I switched to KDE PLASMA.
On the Raspberry Pi 4b KDE worked fine for about 9 or 10 weeks.
Then after an update, I have a problem with KDE PLASMA where every time I open or close a window, the screens goes totally black for about a second, then everything comes back to normal. Everything works but it sure is annoying.
It does this with the RPi 4b 4GB RAM, RPi 4b 8GB RAM, and the RPi 400.
This only does this on Arch Linux Arm / EndeavourOS on the KDE DE.
It does not happen on any other DE or WM that I know of. Although I haven’t tested all 10 of them recently.
I have tried different resolutions.
This happens with both the 32 Bit OS and the 64 Bit OS with KDE.
This happens on two different TVs and one Computer Monitor including a different HDMI cable each time.
I have turned the compositor off. No diff.
The funny thing is, I installed simple-screen-recorder (I think it was called) and recorded some activities involving opening and closing windows, and on the screen the symptoms appeared. I thought OK I have this problem captured. When the screen recording played back on VLC it looked perfect, no blanking screen. Go figure.
Any help or guidance would be appreciated.