To enable explicit synchronization for KWin, you can follow these steps:
1. **Open the terminal.**
2. **Edit the KWin configuration file**:
```bash
nano ~/.config/kwinrc
```
3. **Add or modify the following lines** under the `[Compositing]` section:
```ini
[Compositing]
GLPreferBufferSwap=n
```
- `n` can be set to `1` for `GLX` or `2` for `EGL`. Choose the one that suits your setup.
4. **Save and close the file** (`Ctrl + X`, then `Y`, then `Enter`).
5. **Restart KWin** to apply the changes:
```bash
qdbus org.kde.KWin /KWin reconfigure
```
This should enable explicit sync for KWin. If you encounter any issues, you can revert the changes by editing the `kwinrc` file again.