Can you smell 👃 that? That’s the smell of fresh paint 🖌 with just a hint of cucumber 🥒

Ubuntu MATE 21.04 is here and it has a new look thanks to the collaboration with the Yaru team. This release marks the start of a new visual direction for Ubuntu MATE, while retaining the features you’ve come to love 💚 Read on to learn 🎓 what we’ve been working on over the last 6 months and get some insight to what we’ll be working on next.

We would like to take this opportunity to extend our thanks 🙏 to everyone who contributed to this release, including:

• The Yaru team for welcoming us so warmly 🤗 into the Yaru project and for all their hard work during this development cycle
• The Ayatana Indicator team who helped add new features and fix bugs that improved the indicator experience
• Everyone who participated in the QA/testing and bug filing 🐛
• Those of you who have been contributing to documentation and translations

Thank you! Thank you all very much indeed 🥰

Ubuntu MATE 21.04 (Hirsute Hippo)

What changed since the Ubuntu MATE 20.10?

Here are the highlights of what’s changed since the release of Groovy 🕶 Gorilla 🦍

MATE Desktop 🧉

The MATE Desktop team released maintenance 🔧 updates for the current stable 1.24 release of MATE. We’ve updated the MATE packaging in Debian to incorporate all these bug 🐛 fixes and translation updates and synced those packages to Ubuntu so they all feature in this 21.04 release. There are no new features, just fixes 🩹

Ayatana Indicators 🚥

A highlight of the Ubuntu MATE 20.10 release was the transition to Ayatana Indicators. You can read 👓 the 20.10 release notes to learn what Ayatana Indicators are and why this transition will be beneficial in the long term.

We’ve added new versions of Ayatana Indicators including ‘Indicators’ settings to the Control Center, which can be used to configure the installed indicators.

Ayatana Indicators Settings

Other indicator changes include:

• Added Printer Indicator 🖨 which replaces the legacy printer applet
• Removed RedShift
  • We ran into a show stopper 🛑 bug 🐞 that prevented it’s inclusion in 21.04
  • We’ll either re-introduce RedShift in a future release or adopt a potential alternative solution from the Ayatana Indicator project

Expect to see more Ayatana Indicators included in future releases of Ubuntu MATE. Top candidates are:

• Display Indicator - needs uploading to Debian and Ubuntu
• Messages Indicator - needs uploading to Debian and Ubuntu
  • ayatana-webmail is available for install in Ubuntu MATE 21.04
• Keyboard Indicator - requires feature parity with MATE keyboard applet
• Bluetooth Indicator - requires integration work with Blueman

Yaru MATE 🎨

This is where most of the work was invested 💦

A new derivative of the Yaru theme, called Yaru MATE, has been created in collaboration with the Yaru team. During our discussions with the Yaru team we decided to make one significant departure from how Yaru MATE is delivered; Yaru MATE is only providing a light and dark theme, with the light theme being default. This differs from Yaru in Ubuntu which features a mixed light/dark by default.

We’ve decided to offer only light and dark variants of Yaru MATE as it makes maintaining the themes much easier, the mixed light/dark Yaru theme does require extra work to maintain due to the edge cases it surfaces. Offering just light and dark variants also ensures better application compatibility.

This work touched on a number of projects, here’s what Ubuntu MATE now enjoys as a result of Yaru MATE:

• GTK 2.x, 3.x and 4.x Yaru MATE light and dark themes
• Suru icons along with a number of new icons specifically made for MATE Desktop and Ubuntu MATE
• LibreOffice Yaru MATE icon theme, which are enabled by default on new installs
• Font contrast is much improved throughout the desktop and applications
• Websites honour dark mode at the operating system level
  • If you enable the Yaru MATE Dark theme, websites that provide a dark mode will automatically use their dark theme to match your preferences.

In return for the excellent theme and icons from the Yaru team, the Ubuntu MATE team worked on the following which are now features of Yaru and Yaru MATE:

• Pixel perfect Marco/Metacity/Compiz window manager theme that matches Yaru GNOME Shell window rendering
  • All icons in these themes are SVG for improved HiDPI support
• GTKSourceView 2.x, 3.x and 4.x style
  • Based on Vanilla colour palette

As a result of our window manager and GTKSourceView contributions it is now possible to use all three upstream Yaru themes from Ubuntu in Ubuntu MATE 💪

Yaru MATE GTKSourceView, Tiled Windows and Plank theme

Going the extra mile 🎽

In order to make Yaru MATE shine we’ve also created:

• Plank themes that match Yaru MATE for side and bottom docks
• Patched Marco window manager disable shadows on side-tiled windows
  • The Yaru and Yaru MATE window manager themes feature clean edge styling for side tiled windows
• Multiple colour variants of Yaru MATE are available via Ubuntu MATE Welcome
• Published a Yaru MATE GTK theme snap in the Snap Store
• Published a Yaru MATE icon theme snap in the Snap Store
• Published a Yaru MATE PPA for users of Ubuntu MATE 20.04 LTS

Yaru MATE Snaps

snapd will soon be able to automatically install snaps of themes that match your currently active theme. The snaps we’ve created are ready to integrate with that capability when it is available.

The gtk-theme-yaru-mate and icon-theme-yaru-mate snaps are pre-installed in Ubuntu MATE, but are not automatically connected to snapped applications. Running the following commands in a terminal periodically, or after you install a snapped GUI application, will connect the themes to compatible snaps until such time snapd supports doing this automatically.

for PLUG in $(snap connections | grep gtk-common-themes:gtk-3-themes | awk '{print $2}'); do sudo snap connect ${PLUG} gtk-theme-yaru-mate:gtk-3-themes; done
for PLUG in $(snap connections | grep gtk-common-themes:gtk-2-themes | awk '{print $2}'); do sudo snap connect ${PLUG} gtk-theme-yaru-mate:gtk-2-themes; done
for PLUG in $(snap connections | grep gtk-common-themes:icon-themes | awk '{print $2}'); do sudo snap connect ${PLUG} icon-theme-yaru-mate:icon-themes; done

What’s next? 🔮

While we made lots of progress with Yaru MATE for 21.04, the work is on going. Here’s what we’ll be working on next:

• Some symbolic icons are being provided by a fallback to the Ambiant MATE and Radiant MATE icon themes, something we are keen to address for Ubuntu MATE 21.10.
• Ubuntu MATE doesn’t have a full compliment of Suru icons for MATE Desktop, yet.
• Plymouth boot theme will be aligned with the EFI respecting theme shipped in Ubuntu.

Mutiny 🏴‍☠️

The Mutiny layout, which provides a desktop layout that somewhat mimics Unity, has been a source of bug reports and user frustration 😤 for sometime now. Switching to/from Mutiny has often crashed resulting in a broken desktop session 😭

We have removed MATE Dock Applet from Ubuntu MATE and refactored the Mutiny layout to use Plank instead.

Mutiny layout with Yaru MATE Dark

• Switching to the Mutiny layout via MATE Tweak will automatically theme Plank
  • Light and dark Yaru themes for Plank are included
• Mutiny no longer enables Global Menus and also doesn’t undecorate maximised windows by default
  • If you like those features you can enable them via MATE Tweak
• Window Buttons Applet is no longer integrated in the Mutiny top panel by default.
  • You can manually add it to your custom panel configuration should you want it.
  • Window Buttons Applet has been updated to automatically use window control buttons from the active theme. HiDPI support is also improved.

As a result of these changes Mutiny is more reliable and retains much of the Unity look and feel that many people like.

Command line love 🧑‍💻

We’ve included a few popular utilities requested by command line warriors. neofetch, htop and inxi are all included in the default Ubuntu MATE install. neofetch also features an Ubuntu MATE ASCII logo.

Raspberry Pi images

We will release Ubuntu MATE 21.04 images for the Raspberry Pi in the days following the release for PC 🙂

Major Applications

Accompanying MATE Desktop 1.24.1 and Linux 5.11 are Firefox 87, LibreOffice 7.1.2.2, Evolution 3.40 & Celluloid 0.20.

See the Ubuntu 21.04 Release Notes for details of all the changes and improvements that Ubuntu MATE benefits from.

Upgrading from Ubuntu MATE 20.10

You can upgrade to Ubuntu MATE 21.04 from Ubuntu MATE 20.10. Ensure that you have all updates installed for your current version of Ubuntu MATE before you upgrade.

• Open the “Software & Updates” from the Control Center.
• Select the 3rd Tab called “Updates”.
• Set the “Notify me of a new Ubuntu version” dropdown menu to “For any new version”.
• Press Alt+F2 and type in update-manager -c into the command box.
• Update Manager should open up and tell you: New distribution release ‘21.04’ is available.
  • If not, you can use /usr/lib/ubuntu-release-upgrader/check-new-release-gtk
• Click “Upgrade” and follow the on-screen instructions.

There are no offline upgrade options for Ubuntu MATE. Please ensure you have network connectivity to one of the official mirrors or to a locally accessible mirror and follow the instructions above.

Known Issues

Here are the known issues.

Feedback

Is there anything you can help with or want to be involved in? Maybe you just want to discuss your experiences or ask the maintainers some questions. Please come and talk to us.