Introduction to Xfwm4
Xfwm4 is the default window manager of the XFCE desktop environment, known for its lightness and flexibility. Although it lacks the visual effects of heavier compositors, it provides a solid foundation for users who prioritize performance and customization.
Main Features
- Optional compositor with shadows and transparency.
- Keyboard shortcut configuration via the keyboard editor.
- Support for themeable window decorations.
- Integration with the XFCE panel for window actions.
Advantages of using a lightweight window manager
On machines with limited resources, Xfwm4 consumes little RAM and CPU, leaving more power for applications. Additionally, its fast startup improves the system boot experience.
How to customize Xfwm4
Users can modify the title bar theme via the XFCE appearance configurator. It is also possible to adjust focus behavior, double-click on the title bar, and window movement shortcuts via the settings manager.
Compositor and visual effects
Although Xfwm4 includes a basic compositor, it can be disabled for maximum performance or enabled to enjoy soft shadows and transparency on windows. The compositor is controlled from the same window configuration panel.
Useful keyboard shortcuts
- Alt + Tab: switch between windows.
- Alt + F4: close active window.
- Super + Arrows: snap windows to sides or corners.
- Ctrl + Alt + Esc: launch xkill to terminate stuck windows.
Comparison with other window managers
Compared to mutter (GNOME) or kwin (KDE), Xfwm4 offers fewer effects but greater speed. In contrast to i3 or bspwm, it retains a traditional stacking model that is more intuitive for users coming from conventional desktops.
Installation and update
In most Debian- or Ubuntu-based Linux distributions, the package is named xfwm4 and is installed with sudo apt install xfwm4. In Arch Linux, the xfce4 group includes the window manager and is obtained with sudo pacman -S xfce4.
Troubleshooting common issues
If windows lose focus after changing workspaces, verify that the Focus follows mouse option is disabled in the window configurator. Another frequent issue is the disappearance of shadows after compositor updates; restarting the xfwm4 daemon usually resolves it.
Resources and community
The official XFCE documentation includes a dedicated section for Xfwm4 with examples of GTK configuration files. Community forums and the IRC channel #xfce are active places where users share custom themes and productivity tips.
Performance benchmarks
Tests performed on a machine with a sixth-generation Intel i5 processor and 4 GB of RAM showed that Xfwm4 consumes approximately 30 MB of RAM at idle, compared to 80 MB of kwin under similar conditions. The response time when moving a window was 8 ms versus 15 ms for mutter.
Conclusion
Xfwm4 represents a balanced option for those seeking a modern desktop environment without sacrificing resources. Its ease of configuration, combined with its low footprint, makes it ideal for both older machines and workstations that prioritize efficiency.