UbuntuHandbook | News, Tutorials, Howtos for Ubuntu Linux

Time 2020-12-14 17:02:57

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In the default Gnome desktop when you trying to open an application, the app window sometimes does not get into focus immediately, instead it pops up xxx is ready notification and opens the window behind the current focused window.This usually happens when another window is getting focused during the process of launching a desired application.To get rid of the Window is ready notification and focus window immediately, I think a quick enough system response should fix the problem. Besides, you can install Focus my window Gnome extension.1.) Open terminal (Ctrl+Alt+T) and run command to install chrome-gnome-shell package if you don t have it.sudo apt install chrome-gnome-shell2.) Then go to the extension web page in your browser. Turn on the toggle icon and install it.Though the extension supports for Gnome up to v3.18, it still works in Ubuntu 20.04 and Ubuntu 20.10.Don t see the toggle icon? Click the link Click here to install browser extension and finally refresh the page.That s it. Enjoy!(Optional) If you want to remove the gnome shell extensions, either turn off the toggle icon in the web page, or use Extensions (install the gnome-shell-extension-prefs package) utility.KDE announced its December 2020 apps update including Kdenlive 20.12 two days ago. Here s how to install it in Ubuntu via PPA.Kdenlive 20.12 is a big release with many new features, stability improvements, various mix and transition fixes. While it s not officially announced at the moment in the Kdenlive.org, here are some changes according to KDE s announcement:Allow moving subtitle through subtitle widget.Add shortcut in/out/delete buttons to subtitle widget.Add option to export subtitle file.Add menu for subtitle clips.Add subtitle import functionAdd function to delete all subtitles from subtitle model.Add timeline ruler menu item to create subtitle clip.Add button in timeline toolbar to enable subtitle editing.Add timeline tractor to Subtitle Model to attach subtitle filter.Port to QtWebEngineWidgets.Added multiple track deletion feature.Qtcrop effect: make radius animated.Add method to easily reload a custom effect.Add comments feature in custom effects.Make start and end position of subtitle editable.Add GPU profiles provided by Constantin Aanicai.Add MLT’s Pillar Echo effect.Add signals and slot to subtitle model.Add class to handle subtitles definition and comparison.Add SSA Parser.Add srt parser to model.Rewrite audio thumbnails to only use FFmpeg’s data and optimize memory usage on creation.Add avfilter eq filter, allows to adjust image brightness, contrast, saturation, gamma all in one effect.Update Audio, Editing and Color layouts.Add Effects layout.Improve audiomixer layout.How to Install Kdenlive 20.12 in Ubuntu 20.04, Ubuntu 20.10:The kdenlive team ppa has built the latest packages for Ubuntu 20.04, Ubuntu 20.10, Linux Mint 20.1.) Open terminal from your system application menu, and run command to add the PPA:sudo add-apt-repository ppa:kdenlive/kdenlive-stableType your password when it asks (no asterisk feedback) and hit Enter to continue.2. ) If an old version of kdenlive was installed, upgrade it via Update Manager:Or simply run command in terminal to install the video editor:sudo apt install kdenliveNOTE for non-KDE users, Kdenlive will be installed along with a large list of KDE libraries.Uninstall:To purge the PPA as well as downgrade Kdenlive package, run command in terminal:sudo apt install ppa-purge && sudo ppa-purge ppa:kdenlive/kdenlive-stableTo remove the PPA only, run command:sudo add-apt-repository --remove ppa:kdenlive/kdenlive-stableAnd to remove Kdenlive, run command:sudo apt remove --autoremove kdenlive kdenlive-dataXFE (X File Explorer) is a lightweight Windows File Explorer or Commander like file manager for Unix / Linux X.It s small memory footprint, very fast, and only requires the FOX library to be fully functional, and aims to light desktop users.XFE features include:UTF-8 supportCommander/Explorer interface with four UI modesHorizontal or vertical file panels stackingIntegrated text editor (xfwrite), image viewer (xfimage)Integrated RPM or DEB packages installer / uninstaller (xfpack).Custom shell scripts (like Nautilus scripts)Search files and directoriesDisk usage commandMount/Unmount devices (for Linux only)Color, control, and icon themes (GNOME, KDE, Windows, )Create and extract archives (tar, compress, zip, gzip, bzip2, xz, lzh, rar, ace, arj and 7zip formats are supported)File comparison (through external tool)Thumbnails image previewsConfigurable key bindingsTo install XFE in Ubuntu, simply open terminal and run command:sudo apt install xfeOnce installed open the file manager from your system application launcher and enjoy!(Optional) To remove XFE, run command in terminal:sudo apt remove --autoremove xfeThe Python programming language 3.9.1 was released a few days ago as the first maintenance release of Python 3.9. Python 3.9.1 comes with 282 changes since 3.9.0. It is the first version to support macOS 11 Big Sur. With Xcode 11 and later it is now possible to build “Universal 2” binaries which work on Apple Silicon. See the changelog for more.How to Install Python 3.9.1 in Ubuntu:1.) Open terminal either by pressing Ctrl+Alt+T on keyboard, or by searching for terminal from system application launcher.When terminal opens, run command to add the “deadsnakes” team PPA:sudo add-apt-repository ppa:deadsnakes/ppaType user password (no asterisk feedback) when it prompts and hit Enter to continue.2.) Then run commands to refresh system package cache, and install Python 3.9:sudo apt updatesudo apt install python3.93.) Once successfully installed, check your system Python versions (python version):Uninstall:To uninstall the Python3.9 packages, run command:sudo apt remove --autoremove python3.9 python3.9-minimalTo remove the Deadsnakes PPA, launch Software Updates and go to Other Software tab, then remove the repository line and close the window.Vivaldi web browser 3.5 was released a day ago with improved tabs and media playback, and support for sharing URL via QR code.Vivaldi 3.5 release highlights:More tabs management, e.g., open a new tab in the background by default, clone tab in the background.Add Widevine certificate keys to get better experience on Amazon Prime HD, Spotify, Disney+, Peacock TV, etc.Share URL with QR code via a small button in the Address Field, when enabled.Enable shortcuts in context menusSingle key shortcut improvements.Make Google components optional: Hangouts, Cast, Cloud Print Accept-language settingUpgrade to Chromium 87.0.4280.88, and more.How to Install Vivaldi 3.5 in Ubuntu:The official Ubuntu .DEB package is available to download at the link below:Download Vivaldi (DEB)Grab the deb matches your OS, then install it via either Ubuntu Software install or Gdebi package installer. Or run command in terminal:sudo apt install ./Downloads/vivaldi-stable*.debVivaldi also has an official apt repository, with it you can install the browser and get future updates through Software Updater utility.Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for terminal from application menu. When it opens, run following commands one by one:1. Download and install the repository key:wget -qO- https://repo.vivaldi.com/archive/linux_signing_key.pub | sudo apt-key add -Typer user password when it prompts and hit Enter to continue.2. Add Vivaldi repository via command:sudo add-apt-repository 'deb https://repo.vivaldi.com/archive/deb/ stable main'3. Finally check updates and install the web browser via command:sudo apt update && sudo apt install vivaldi-stableOr upgrade from an old version via Software Updater utility.(Optional): To remove Vivaldi apt repository from you system, launch Software Updates and navigate to Other Software tab.

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