KDE Plasma on RPI-4B Fresh Install Issues

That is fine. That is what I do also, except my TV is not 4K it is 1920x1080.

You are the first person I know of that has used Bluetooth for the keyboard and mouse. You are now a pioneer. Since bluetooth works, I assume you must have enabled bluetooth in
/boot/config.txt as per post one of this topic:

The Arch Linux WiKi suggests installing bluez and bluez-utils
https://wiki.archlinux.org/title/Bluetooth
^^ good resource BTW

I would start by removing the bluetooth mouse and hooking up a USB keyboard & USB mouse for testing purposes. If the USB mouse works fine then you know what the problem is.

I tried using a wireless Microsoft keyboard and mouse with a single dongle and got the exact same symptoms. Keyboard OK, Mouse slow. Left the wireless keyboard as is, but used a USB mouse. Same, keyboard OK, mouse slow. Installed both a USB keyboard and USB mouse, worked perfectly. The wireless keyboard and mouse are now sitting in the spare parts closet. I use a USB keyboard & USB mouse hooked to a powered 4 port USB 3 hub. Works great and only uses one port on the RPi 4b.

I use a RPi 4b with 4GB RAM Hardware Ver 1.2 with KDE Plasma every day while during ARM development, and updating the EndeavourOS package repositories. Works great. The only thing I have noticed is after logging in with sddm and when the desktop appears the delay is noticeable between x86_64 KDE and Arm KDE. After that, it runs very acceptably.

I always poweroff / reboot by right clicking on the desktop, the selecting what I want to do. No delays doing that. I don’t know if I have even used the Application Launcher to poweroff or reboot.

I also have never had a wallpaper issue either. Here is a test install on my RPi 4b with 8GB RAM with the same setup.

Finally, you are also a pioneer in another area. The first person I know with a RPi 4b Hardware Rev 1.5

Pudge

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