To replace KWin with another window manager on an X11 session, you'll need to follow these steps:
1. **Install the new window manager**: Make sure the window manager you want to use is installed. For example, if you want to replace KWin with i3, you would install i3 using your package manager.
```sh
sudo apt install i3
```
2. **Modify the session startup**: You need to change the startup script to launch your new window manager instead of KWin. This usually involves editing the startup configuration files.
For KDE, you can create or edit the `~/.xinitrc` file (if you're using startx) or the `~/.config/plasma-workspace/env/set_window_manager.sh` script to set the new window manager.
Example for `~/.config/plasma-workspace/env/set_window_manager.sh`:
```sh
#!/bin/sh
export KDEWM=/usr/bin/i3
```
Make sure to replace `/usr/bin/i3` with the path to your new window manager.
3. **Restart your session**: Log out and log back in to see the changes take effect. Your KDE session should now use the new window manager.
If you encounter any issues or need further customization, you can refer to the documentation for your specific window manager and KDE Plasma.
Let me know if you need more detailed steps or have any specific questions!
