Mozilla Firefox 81.0 was released a day ago with new features and security fixes.

Firefox 81.0 release highlights:

  • Pause and play audio or video in Firefox from your keyboard or headset
  • New Alpenglow theme
  • Save, manage, and auto-fill credit card information for users in US and Canada.
  • AcroForm support allows to fill in, print, and save supported PDF forms
  • The PDF viewer got a new fresh look.
  • Pocket recommendations for Austria, Belgium and Switzerland users with German version.
  • Important fixes to HTML5 audio/video controls
  • Extended file types support.
  • Picture-in-Picture got new iconography.
  • Security fixes.

How to install Firefox 81 in Ubuntu:

The latest packages will be made into security & updates repositories for all current Ubuntu releases in a few days.

At that time, you can upgrade Firefox through the Software Updater utility:

If you can’t wait, download the Linux package from mozilla website.

Cantata, Qt5 graphical client for Music Player Daemon (MPD), released version 2.4.2 with various fixes. PPA updated for Ubuntu 20.04, Linux Mint 20, and derivatives.

Cantata 2.4.2 is primarily a stability improvements and bug-fixes release that features.

  • Correctly handle changing ‘Basic’ mode music folder.
  • Set minimum Qt5 version to 5.11
  • Add to list of lyrics providers.
  • Change the default lyrics providers
  • Switch from to
  • See the release note for more.

How to Install Cantata 2.4.2 in Ubuntu 20.04:

For Ubuntu 20.04, you can install the new release package via the unofficial PPA. Due to minimum Qt 5.11 requirement, Ubuntu 18.04 package is stuck at version 2.4.0.

1. Open terminal either by pressing Ctrl+Alt+T on keyboard or by searching for ‘terminal’ from system app launcher. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/cantata-qt

Type user password (no asterisk feedback while typing) when it prompts and hit Enter.

2. For those who have a previous release installed, upgrade Cantata via Software Updater:

or install it for the first time via commands:

sudo apt update

sudo apt install cantata mpd


To remove cantata MPD client either use system package manager or run command:

sudo apt-get remove --autoremove cantata

To remove the PPA repository, launch Software & Updates utility and navigate to Other Software tab.

For those prefer Deb package to the containerized Snap or Flatpak package, Emacs text editor 27.1 now is available to install via an Ubuntu PPA for all the current releases.

GNU Emacs 27.1 was released more than 1 month ago. Thanks to Kevin Kelley, you can now install it in Ubuntu via this PPA repository.

The PPA package features:

  • native support for JSON
  • support for ACLs
  • support for libgmp
  • support for enhanced text rendering through Cairo and HarfBuzz
  • remove ImageMagick support
  • remove xwidgets support for Ubuntu 16.04.

1. Open terminal either from system application launcher or by pressing Ctrl+Alt+T on keyboard. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:kelleyk/emacs

Type user password (no asterisk feedback) if it asks and hit Enter to continue.

2. Then refresh system package cache and install the editor via 2 commands:

sudo apt update

sudo apt install emacs27

If you want, you can install the text-only user interface via sudo apt install emacs27-nox.

The PPA also contains emacs26 and emacs25 packages for choices.

(Optional) To uninstall the PPA, either go to ‘Software & Updater -> Other Software’, or run command:

sudo add-apt-repository --remove ppa:kelleyk/emacs

And remove the Emacs text editor if you want by running command:

sudo apt remove --autoremove emacs27

Flameshot, powerful yet simple to use screenshot tool, released version 0.8.0 with new editing tools, improvements, and many fixes.

Flameshot 0.8.0 added the popular requested circle counter tool. It added a button in left-side of screen to open the sidebar, which was previously only accessible by hitting Space on keyboard.

The blur tool has been replaced by pixelate tool. If the “thickness” is 0 or 1, the old blur behavior is preserved. If the thickness is increased past 1 the image will pixelate by the thickness.

Other changes include:

  • Allow enter key to copy image to clipboard
  • Add support for saving as JPG and BMP files.
  • Add line thickness to side panel
  • Add option to close after capture (buggy at the moment.)
  • Add option to auto copy URL after upload
  • Fix capture after pressing ctrl + S during textarea input
  • Add more translations.
  • Add Snap and Flatpak packages

How to Install Flameshot 0.8.0 in Ubuntu 20.04 / 18.04:

Go to the release page at the link below, scroll down, and select download an installer package:

Flameshot Releases

For Ubuntu 20.04, grab the “flameshot_ubuntu_0.8.0-1_amd64.deb” package. Then install it by either GDebi, or running command in terminal:

cd ~/Downloads && sudo apt install ./flameshot_ubuntu_0.8.0-1_amd64.deb

For older Ubuntu releases, grab the .Appimage – single executable to launch the screenshot tool, .snap or .flatpak – universal Linux packages run in sandbox.

Celluloid, formerly Gnome MPV, released version 0.20 a few hours ago. Here’s how to install it in Ubuntu 20.04 via PPA.

Celluloid is a simple GTK+ frontend for mpv media player. The latest 0.20 release features:

  • Make it possible to activate context menu when the playlist is empty.
  • Prevent constant resizing of the seek bar due to timestamp label resizing as its value changes.
  • Only show a single error dialog when a large number of errors occurs in rapid succession.
  • Add menu item for opening folders.
  • Adjust position of UI elements of modal dialogs in non-CSD mode to be more consistent with CSD mode.
  • Add support for loading external video tracks.
  • Make playlist shuffle toggleable.
  • Make arrow key bindings work with arrow keys on numpad.

How to Install Celluloid 0.20 in Ubuntu 20.04:

Celluloid media player is available to install via Flatpak package in Flathub repository.

For those prefer apt repository, the formerly Gnome MPV PPA has made the new release packages for Ubuntu 20.04, Linux Mint 20.

1.) Open terminal either by pressing Ctrl+Alt+T on keyboard or by searching for ‘terminal’ from application menu. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:xuzhen666/gnome-mpv

Type user password (no asterisk feedback) when it prompts and hit Enter to continue.

2.) Then install the media player via command:

sudo apt install celluloid

For Ubuntu derivatives, you may need to run sudo apt update to refresh package cache first.

Uninstall Celluloid:

To remove the media player, open terminal and run command:

sudo apt remove celluloid

And remove the PPA repository via command:

sudo add-apt-repository --remove ppa:xuzhen666/gnome-mpv