Prefer Plank dock launcher? Dash-to-Plank is the GNOME Shell extension to integrate it in Ubuntu.

Besides Dash-to-Dock and Dash-to-Panel, this is the third ‘Dash-to’ extension I’ve heard about. It’s Gnome Shell integration for Plank, the simplest dock on the planet.

Why Plank?

For me, the only reason to use Plank instead of Ubuntu Dock (Dash-to-Dock) is that there are tons of Plank themes available in the web, so I can change its look and feel at will.

Install Dash-to-Plank:

1.) Firstly, you have to install plank by running command in terminal (press Ctrl+Alt+T to open terminal):

sudo apt install plank

Though I’m not sure, before installing the extension system restart is required.

2.) Install the chrome-gnome-shell package if you’re first time to install a Gnome Shell extension.

sudo apt install chrome-gnome-shell

3.) Finally go to the extension web page and turn on the toggle icon to install it.

Don’t see the toggle icon? Click the link ‘Click here to install browser extension’ to install browser extension and refresh the web page.

That’s it!

In addition, the extension does not remove the default Ubuntu Dock. To get rid of it, disable ‘Dash’ via another extension.

Oracle Virtualbox 5.1.12

Oracle VirtualBox released version 6.1.20 as the tenth update for the 6.1 release series of the open-source virtualization software.

For Linux host and guest, the release added support for both Kernel 5.11 and Kernel 5.12. And the maximum MTU size has been increased to 16110 for host-only adapters on Linux kernels 4.10+.

There are also bug-fixes for Linux guest additions, including vboxvideo module compilation fix for kernel version 5.10.x, and kernel module build fix for RHEL 8.4 beta and CentOS Stream.

Other changes in VirtualBox 6.1.20 include:

  • Fixed extremely poor VM performance depending on the timing of various actions.
  • Fixed guest OS hanging under certain circumstances when Hyper-V is present.
  • Fixed Guru Meditation error when using a nested hypervisor under certain circumstances.
  • Fixed a SMAP related host panic affecting Solaris 11.4 systems with Intel Haswell CPUs or later.
  • Add cloud-init support for export to OCI and for OCI instance creation.
  • Fixed “Delete all files” leaving behind Logs/VBoxUI.log.
  • Multiple audio fixes and enhancements.
  • Fixed detection of duplex audio devices on macOS.
  • Fixed link status reporting for “not attached” adapters.
  • Fixed connectivity issues with e1000 in OS/2 guests.
  • Fixed VxWorks e1000 driver compatibility issue.
  • Fixed GUI checks for port forwarding rules rejecting IPv6 with “Nat Network”.
  • Fixed possible VM hang when using the a serial port in disconnected mode.
  • Fixed interoperability with v4l2loopback and fixed a webcam crash under certain circumstances.
  • Fixed sporadic Windows VM hang or reboot on high CPU load.
  • Allow changing network adapter attachment of a saved VM with “modifyvm”.
  • Fix for argument processing to honor the ‘–root’ option.

How to Install VirtualBox 6.1.20 in Ubuntu:

The official .deb packages are available for download at the link below:

If you’ve already added the Oracle apt repository for Linux, install the updates simply via Software Updater.

Or add the apt repository by running following commands one by one:

1. Open terminal (Ctrl+Alt+T), paste below command and run to add the repository:

sudo sh -c 'echo "deb [arch=amd64] https://download.virtualbox.org/virtualbox/debian $(lsb_release -sc) contrib" >> /etc/apt/sources.list.d/virtualbox.list'

For Linux Mint, you HAVE to replace $(lsb_release -sc) in the command with bionic for Mint 19.x, or xenial for Mint 18.x, or focal for Linux Mint 20.

2. Then download and install the repository key via command:

wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -

3. Refresh system package cache via command:

sudo apt update

4. Finally install Virtualbox 6.1:

sudo apt install virtualbox-6.1

Uninstall:

To remove it, simply run command in terminal:

sudo apt remove --autoremove virtualbox-6.1

And go to Software & Updates -> Other Software to remove apt repositories.

wifi hotspot

Forgot your wireless access point password? Well, there are a few ways to find it out in Ubuntu.

Option 1.) Using system’s wifi settings:

Firstly, if your Ubuntu is running with the default desktop environment. Simply go to Wi-Fi settings from system tray menu:

Then click on the gear button after the current connected access point to get into settings page. Navigate to the Security tab, and finally tick “Show password” check out to get the password.

Option 2.) Get Wi-Fi password via connection profiles:

For other desktop environments or command line, navigate to /etc/NetworkManager/system-connections directory either in file manager or by running command in terminal:

cd /etc/NetworkManager/system-connections && ls

There you’ll see all saved network connections. Just open the desired one with your favorite text editor (need root permission) or by running command:

sudo cat FILENAME.connection

When file opens, you’ll see the password under wifi-security section.

Option 3.) Single command to tell Wi-Fi password:

If you don’t hate Linux command, you can run this single command to print the current connected Wi-Fi password:

nmcli device wifi show-password

The command will work on all Linux systems. And it outputs a QR code for sharing with your friends.

Mozilla Firefox 88.0 was released today. For Linux users now it supports for smooth pinch-zooming using a touchpad.

Besides that, Firefox 88 introduced a new protection against privacy leaks. Now it confines the window.name property to the website that created it. And it will clear the window.name property when navigating between websites to potential privacy leakage.

For those prefer the built-in ‘Take a Screenshot’ action, the feature has been removed from the ‘three dots’ page actions menu. Instead, you can get it from the context menu.

Other changes in Firefox 88.0 include:

  • PDF forms now support JavaScript embedded in PDF files.
  • Margin units are now localized in Print.
  • Disable FTP support.
  • Various security fixes.

How to get Firefox 88 in Ubuntu:

For all current Ubuntu releases, the new Firefox package will be published in Ubuntu security & updates repositories in the next few days.

At that time, you can easily update the web browser through Software Updater (Update Manager)

For those who can’t wait, the non-install portable tarball is available to download at the link below:

Firefox FTP Download Page

Want to change the GDM login screen background wallpaper? There’s now a graphical tool to do this in Ubuntu 20.04, Ubuntu 20.10, as well as Pop!_OS 20.04, Pop!_OS 20.10.

Since Ubuntu 20.04, changing the login screen background is not easy because the CSS code are packaged into a .gresource file. Thanks to community, some scripts were made to do the job from the command line.

To make life easier, there’s now a graphical tool called GDM Background to change GDM background via a few clicks.

The software is quite simple, it offers a small window with only set and restore button. Even no open file button, you have to drag and drop your desired wallpaper image from file manager to the app window.

1.) To install the tool, firstly open terminal (Ctrl+Alt+T) from system app launcher. When it opens, select run the command to grab the .deb pakage:

  • For Ubuntu 20.04:
    wget github.com/thiggy01/gdm-background/raw/master/debs/gdm-background_1.0_amd64_ubuntu20.04.deb

  • For Ubuntu 20.10:
    wget github.com/thiggy01/gdm-background/raw/master/debs/gdm-background_1.0_amd64_ubuntu20.10.deb
  • For Pop!_OS 20.04:
    wget github.com/thiggy01/gdm-background/raw/master/debs/gdm-background_1.0_amd64_popos20.04.deb
  • For Pop!_OS 20.10:
    wget github.com/thiggy01/gdm-background/raw/master/debs/gdm-background_1.0_amd64_popos20.10.deb

2.) Then install the deb from your system via command:

sudo apt install ./gdm-background*.deb

Once installed, search for and open GDM background from app launcher. Drop a picture image into the app window and click the ‘set’ button.

Type user password when it asks. And it will prompt you with button to restart GDM to apply change. NOTE: DO SAVE you work before click OK as it will log out the current session.