What Is Ubuntu’s Main Screen Called?
When you power on a computer running Ubuntu, the first thing you see after the boot process is a graphical interface that lets you interact with the system. This interface is commonly referred to as Ubuntu’s main screen or Ubuntu desktop. Technically, the main screen is the GNOME Shell desktop environment that Ubuntu ships with by default. In everyday conversation, users simply call it the “Ubuntu desktop,” but understanding what lies beneath that name helps you appreciate how the operating system works, how to customize it, and why it looks and feels the way it does.
Introduction
Ubuntu is one of the most popular Linux distributions, praised for its ease of use, regular releases, and strong community support. And a big part of its user‑friendly reputation comes from the polished graphical interface that greets you after you log in. That interface—what most people point to when they say “the main screen”—is not a single monolithic program but a collection of components working together to produce the desktop experience you see on the monitor.
In this article we will explore:
- The official name of Ubuntu’s main screen (GNOME Shell).
- How the desktop environment is structured.
- What you see on the login screen versus the desktop.
- Ways to personalize the main screen.
- Alternative desktop environments offered by Ubuntu flavors.
- Frequently asked questions about the Ubuntu main screen.
By the end, you’ll be able to answer the question “What is Ubuntu’s main screen called?” with confidence and know exactly what you’re looking at when you sit down at an Ubuntu workstation.
What Is Ubuntu’s Main Screen Called?
The Short Answer
Ubuntu’s main screen is called the GNOME Shell desktop environment. When you log in, GNOME Shell draws the top bar, the activities overview, the dash (or favorite applications bar), and the window decorations that together constitute what most users recognize as the Ubuntu desktop.
Worth pausing on this one.
The Longer Explanation
- Desktop Environment (DE) – A DE is a suite of graphical programs that provide icons, toolbars, wallpapers, widgets, and window management. Ubuntu’s default DE is GNOME, specifically the GNOME Shell version that ships with Ubuntu 20.04 LTS and later releases.
- GNOME Shell – This is the core user interface of GNOME. It renders the top panel (showing the date, time, system menu, and status icons), the Activities overview (triggered by the Super key or clicking the Activities button), and the dash that holds your favorite and running applications.
- Ubuntu Desktop – In marketing and documentation, Canonical (the company behind Ubuntu) often refers to the whole user‑facing experience as the “Ubuntu Desktop.” This term encompasses GNOME Shell plus Ubuntu‑specific tweaks such as the Ubuntu theme, default wallpaper, and certain extensions (like Ubuntu Dock) that modify the vanilla GNOME experience.
So, if someone asks, “What is Ubuntu’s main screen called?” you can answer:
“It’s the GNOME Shell desktop environment, which Canonical brands as the Ubuntu Desktop.”
Understanding the Desktop Environment
Core Components of GNOME Shell on Ubuntu
| Component | What It Does | Typical Location on Screen |
|---|---|---|
| Top Bar | Shows date/time, system menu (power, network, sound), and application indicators. | Across the very top of the screen. |
| Activities Overview | Provides a searchable view of open windows, applications, and workspaces. So | |
| Workspace Switcher | Lets you organize windows across multiple virtual desktops. In practice, | Around each application window. |
| Window Decorations | Title bars with close, maximize, minimize buttons; allows dragging and resizing. | Appear near the top‑center or top‑right, depending on settings. Plus, |
| Dash (Ubuntu Dock) | A vertical bar of favorite and running apps; can be set to auto‑hide. On the flip side, | |
| Notifications | Temporary banners for messages, updates, and system alerts. | Found in the Activities overview on the right side. |
How It Differs from Vanilla GNOME
Ubuntu ships with a few customizations that make the GNOME experience feel distinct:
- Ubuntu Theme – A slightly darker Ambiance/Radiance-inspired theme with Ubuntu’s signature orange accents. * Ubuntu Dock – A fork of the popular Dash-to-Dock extension that provides a more traditional dock feel.
- Snap Integration – The Ubuntu Software center emphasizes Snap packages, and the desktop shows Snap-specific icons where relevant. * Default Applications – Firefox, LibreOffice, Thunderbird, and a set of GNOME core apps are pre‑installed, giving a ready‑to‑use out‑of‑the‑box experience.
These tweaks do not change the underlying name—GNOME Shell remains the core—but they shape what users perceive as the “Ubuntu main screen.”
The Login Screen (GDM)
Before you reach the desktop, Ubuntu displays a login screen managed by GDM (GNOME Display Manager). While technically not part of the desktop environment, it is the first graphical screen many users encounter.
- GDM Presents – A list of user accounts, a password field, and accessibility options (screen reader, on‑screen keyboard, high contrast).
- Customization – You can change the background image or theme via
gsettingsor by editing/etc/gdm3/greeter.dconf-defaults. - Transition – After successful authentication, GDM hands control over to GNOME Shell, which then draws the main screen you interact with.
Understanding that the login screen is separate helps clarify why some guides refer to “the Ubuntu login screen” versus “the Ubuntu desktop.”
Customizing the Main Screen
One of Ubuntu’s strengths is how easy it is to tailor the main screen to your taste. Below are common customization paths, each with a brief “how‑to” outline.
1. Changing the Theme
- Install GNOME Tweaks (
sudo apt install gnome-tweaks). - Open Tweaks → Appearance → select a different Shell or Applications theme.
- Popular community themes: Yaru (Ubuntu’s default), Adwaita, Arc, Pop.
2. Modifying the Dock
- In Settings → Dock,
adjust position, icon size, and autohide behavior. For deeper changes, install the Dash to Dock extension via GNOME Extensions website Surprisingly effective..
3. Using GNOME Extensions
Extensions add functionality beyond the default setup. Manage them through the Extensions app or via gnome-extensions-app. Popular choices include:
- Desktop Icons – Restores traditional desktop icons.
- User Themes – Allows full shell theme changes.
- Blur My Shell – Adds transparency effects.
- Clipboard Indicator – Enhances clipboard history.
4. Touchpad & Mouse Gestures
Enable or fine-tune gestures in Settings → Mouse & Touchpad. For advanced multi-finger gestures, install Libinput Gestures (sudo apt install libinput-tools) and configure custom actions via a config file.
5. Workspace Management
Configure virtual desktops in Settings → Multitasking. Choose between dynamic workspaces (automatically added/removed) or a fixed number. Assign applications to specific workspaces via right-click → “Always on this workspace.”
Conclusion
Ubuntu’s main screen, built on GNOME Shell, represents a thoughtful blend of aesthetic consistency, practical workflow tools, and user-driven customization. While its core identity remains GNOME, Ubuntu’s curated defaults—the dock, theme, and Snap integration—create a distinct, approachable experience right from first boot. In real terms, yet, the platform never feels rigid; through Tweaks, Extensions, and straightforward settings, users can reshape the desktop to match their precise needs, whether that means a minimalist single-window focus or a multi-desktop productivity hub. This balance between out‑of‑the‑box polish and open-ended flexibility is central to Ubuntu’s enduring appeal, ensuring that the main screen is not just a starting point, but a personalized workspace that evolves with its user.
