Mumble, voice chat app for gamer, released version 1.3.4 with important bug-fixes.

Mumble is a free and open-source VoIP application designed for use by gamer and is similar to programs such as TeamSpeak.

Before, the public server list registration script doesn’t have an URL scheme whitelist for the website field. So a malicious server can register itself with a dangerous URL in an attempt to attack a user’s machine. In Mumble 1.3.4, now it only allows http and https schemes in both client-side and public server lists.

The new release also fixed an issue that applying a noise gate generates significant packet loss. Due to the mitigation for vulnerabilities discovered in OCB2, it allows some packets with specific characteristics to be dropped during encryption. It however causes packet loss issue. Now it is fixed by a workaround from contributor.

Other changes in Mumble 1.3.4 include:

  • Don’t use outdated (non-existent) notification icon names on Linux.
  • Use qInfo instead of qFatal for logging, which fixes a crash issues.

Unfortunately, there are still known issues in Mumble that overlay blocked by CS:GO Trusted Mode and BattleEye.

How to install Mumble 1.3.4 in Ubuntu:

The official release PPA has made the packages for Ubuntu 16.04, Ubuntu 18.04, and Ubuntu 20.04.

1. Open terminal either from system application launcher or by pressing Ctrl+Alt+T on keyboard. When it opens, paste the command below and hit run:

sudo add-apt-repository ppa:mumble/release

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

2. If an old release was installed, simply upgrade it via Software Updater:

Or run commands one by one in terminal to check updates and install the chat app for gamer:

sudo apt-get update

sudo apt-get install mumble mumble-server

Uninstall Mumble:

You can purge the PPA which also downgrade the VoIP app to the stock version via command:

sudo apt-get install ppa-purge && sudo ppa-purge ppa:mumble/release

To simply remove mumble, either use system package manager or run command in terminal:

sudo apt-get remove mumble mumble-server

Want to start drawing on your screen and save artwork as PNG or SVG? It’s easy to do this in Ubuntu via Gnome Extension.

“Draw On Your Screen” is a Gnome Shell extension allows to start or stop drawing on screen easily via Alt+Super+D keyboard shortcut. With it, you can start free drawing, create basic shapes, insert text, and export your artwork to SVG file.

1.) Install the Gnome Shell Extension:

The extension is available as normal software package in Ubuntu repository. Simply open terminal either from your system app launcher, or by pressing Ctrl+Alt+T on keyboard. When it opens, run command to install the extension:

sudo apt install gnome-shell-extension-draw-on-your-screen

Type your user password, if it asks, and hit Enter. For security reason, there’s no asterisk feedback.

2.) Enable the Extension.

The extension is not enabled immediately after installation. So you have to turn it on via the Gnome Tweaks tool.

1. First press Alt+F2 to bring up ‘Run a Command’ dialog box, type r, and hit Enter to restart Gnome Shell without losing any running applications.

2. Install Gnome Tweaks from Ubuntu Software if you don’t have it. Then open it and navigate to Extensions tab.

There turn on the toggle icon for the extension to enable it.

3.) Start drawing on your screen.

Now you can start drawing by pressing Alt+Super+D, and leave the mode either by pressing the keyboard shortcut again or use Esc key.

In the drawing mode, you can right-click on desktop to get a list of menu options.

To draw rectangle, circle, line, insert text, and more shortcuts, press Ctrl+F1 to get help.

For more about the extension, tips and tricks, go to the project page.

Flowblade, a multi-track non-linear video editor Linux, released new major 2.8 version today with focused on making the app more configurable.

For 1680 x 1050 and higher screen resolution, now you can change the panels layout by moving panels to different positions using View->Panel Placement submenu.

The Middlebar now is more customizable by selecting View->Middlebar layout->Free Bar and then selecting which items in Middlebar are displayed and in which order via View -> Middlebar layout – > Configure Free Bar….

The keyboard shortcut is also customizable. First create a custom shortcut group via top-left menu button in “Keyboard Shortcuts” dialog, you can then select this group and change the shortcuts as you want.

Other changes in Flowblade 2.8 include:

  • New Flowblade Neutral and Flowblade Gray themes.
  • Use Tool Dock widget to select Timeline Edit Tools
  • Move Filter Selection panel to right side of the Timeline
  • A set colored of icons to be optionally used in the Middlebar
  • Relink a directory feature for Media Relinker
  • New new French language user manual and more.

How to install Flowblade in Ubuntu:

The software offers official DEB binary package available to download at:

Download Flowblade

Just grab the DEB package, then install it either via Gdebi, Software Install, or by running command in terminal:

sudo apt install ./Downloads/flowblade-*.deb

This simple tutorial shows how to install WeChat, QQ instant messenger, Ali Wangwang, QQ Music, QQ Video, iQIYI easily from Deepin repository.

For those doing business or having friends / family members in China, it’s hard to avoid using these top apps. Thanks to wine and Deepin Linux, they are working quite good in Linux without native support.

Though these wine applications are maintained by Deepin Linux repository, there’s open-source project ported them into Ubuntu, Debian, Linux Mint, make installing them as easy as Ubuntu PPA packages.

1.) First open terminal from system application launcher. When it opens, run command:

wget -O- https://deepin-wine.i-m.dev/setup.sh | sh

The command will enable 32 bit architecture (if you haven’t already), add apt repository 301 redirect to Deepin repository, set the priority to make your system only install the previous apps from that repository, and add XDG_DATA_DIRS settings for app shortcuts.

Type your user password if asks and hit Enter.

2.) After that, you can either install WeChat, QQ, and so forth via Synaptic Package Manager:

or running apt command in terminal to select install an application as you want:

sudo apt install com.qq.weixin.deepin

The list of app packages include:

  • WeChat: com.qq.weixin.deepin
  • QQ IM: com.qq.im.deepin
  • Dingding: com.dingtalk.deepin
  • Ali Wangwang: com.taobao.wangwang.deepin
  • QQ Music: com.qq.music.deepin
  • QQ video: com.qq.video.deepin
  • iQIYI: com.iqiyi.deepin

Once installed, log out and back in to open it from system application launcher and enjoy! Note the first launch may take a few seconds configuring the wine environment.

Clear cache or remove WeChat, QQ IM, etc.

The app data is stored in user’s Documents folder. Remove the relevant sub-folders will clear the app caches.

The Deepin wine platform is located in .deepinwine folder. Since it’s a hidden file folder, you need to press Ctrl+H to show / hide it in your file browser. And you can remove it to clear the Wine configurations.

To remove these China’s top apps, simply run apt remove command in terminal (WeChat in the case):

sudo apt remove --autoremove com.qq.weixin.deepin

To remove the repository configurations added via step 1.), run commands to remove the 3 files one by one:

sudo rm /etc/apt/preferences.d/deepin-wine.i-m.dev.pref
sudo rm /etc/apt/sources.list.d/deepin-wine.i-m.dev.list
sudo rm /etc/profile.d/deepin-wine.i-m.dev.sh

shutter screenshot

The Shutter screenshot tool released version 0.95 a few days ago as the first update after moving to Github, and the first step getting back into Ubuntu universe repositories.

Shutter is one of the most popular Linux screenshot applications with editing features. Since Ubuntu dropped old Gnome 2 libraries from the main repositories, Shutter is removed too from Ubuntu repository.

The project now is working on removing old dependency libraries and getting back into Linux Distros’ (Arch Linux, Debian, Ubuntu) repositories. And the release of version 0.95 is the first step in the process.

Shutter 0.95 changelog:

  • Almost fully dropped the dependency on the outdated Perl Gnome2 library
  • Update translations.
  • Removed dependencies: Arch: gnome-perl, gnome-vfs-perl; Debian: libgnome2-perl, libgnome2-vfs-perl
  • New dependencies:
    • Arch: perl-number-bytes-human, perl-glib-object-introspection
    • Debian: libnumber-bytes-human-perl, libglib-object-introspection-perl

How to Install Shutter in Ubuntu 20.04, Ubuntu 20.10:

Shutter packages as well as missing dependencies are now available in a trusted third-party PPA

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

sudo add-apt-repository ppa:linuxuprising/shutter

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

2. Then install Shutter either via Synaptic package manager or by running command in terminal:

sudo apt install shutter

Once installed, launch it from gnome software menu and enjoy!

Uninstall Shutter:

To remove shutter, simply open terminal and run command:

sudo apt remove --auto-remove shutter

And remove the PPA via Software & Updates -> Other Software.