To adjust the refresh rate in KWin (the window manager for KDE Plasma on X11), you can follow these steps:
1. **Open System Settings**:
- Go to your application launcher and search for "System Settings" or find it in your application menu.
2. **Display and Monitor**:
- In the System Settings window, navigate to `Display and Monitor`.
3. **Screen Refresh Rate**:
- Under the `Display Configuration` tab, you should see options for your connected monitors. Select the monitor you want to adjust.
- Look for the `Refresh Rate` dropdown menu. Here, you can select the desired refresh rate for your monitor.
4. **Apply Settings**:
- After selecting the appropriate refresh rate, click `Apply` to save the changes.
If you're comfortable with the command line, you can also use `xrandr` to change the refresh rate. Open a terminal and type:
```bash
xrandr --output --mode --rate
```
Replace ``, ``, and `` with your specific values. For example:
```bash
xrandr --output HDMI-1 --mode 1920x1080 --rate 60
```
To find out your output name and available modes, simply type `xrandr` in the terminal, and it will list all connected displays and their supported resolutions and refresh rates.
