Archives For Howtos

DroidCam icon

DroidCam is a simple tool that turns your Android device into a wireless webcam, letting you chat on Skype, Google+, and other programs.

It also works with OBS/XSplit/etc for streaming to Twitch or YouTube. You can also use DroidCam as an IP webcam (or Surveillance Camera) via a Internet browser virtually on all networks. Use it as a simple pet cam, spy cam, or a security camera.


  • Chat using “DroidCam Webcam” on your computer, including Sound and Picture.
  • Connect over WiFi or USB cable.
  • Use other apps with DroidCam in background.
  • Surveillance/IP webcam MJPEG access


How to Install DroidCam in Ubuntu:

1. Download DroidCam Linux client from the official links below:

DroidCam for Linux 32-bit

DroidCam for Linux 64-bit

2. Extract and open the result folder in terminal by selecting “Open in Terminal” from its context menu.


3. When the terminal opens, run the install script to make and install the client in your system:


Type in your password when it asks (no visual feedback) and hit Enter.

Once installed, you should be able to launch the client by running droidcam command in terminal.

4. To create a launcher shortcut, run command to create an empty configuration file:

gedit ~/.local/share/applications/droidcam.desktop

And paste below lines when the files opens and save it.

[Desktop Entry]
Comment=Use your Android phone as a wireless webcam or an IP Cam!


For the shortcut icon file, grab one from the web, name droidcam (.png, or .svg), put it into .local/share/icons folder.


Finally launch the client and start DroidCam in Android, select connection mode, type in ip, port, and click connect.

Open up a V4L2 compatible program (VLC player, Skype, Cheese, etc) and you should see DroidCam listed as a video device.

To update the webcam resolution, edit the configuration file via command:

sudo apt install gksu && gksudo gedit /etc/modprobe.d/droidcam.conf

then change the value of width and height. Recommended resolutions are 320×240, 480×360, 640×480, 960×720 or 1280×720.


(Optional) To remove DroidCam client in Ubuntu, run the uninstall script via command:

sudo /opt/droidcam-uninstall

Thanks for reading and Merry Christmas!

OpenShot Video Editor

Then OpenShot video editor has reached the 2.2 release with optimized editing of HD videos. Qt version has been made into the official Ubuntu PPA.

New features in OpenShot 2.2:

  • Editing HD videos (5K, 4K, 2.5K, and 1080p) is vastly improved.
  • A new caching engine supports both memory and disk back-ends.
  • opening huge projects up to 10x faster.
  • Many critical bug-fixes.
  • Keyframe Enhancements.
  • Improved error handling and real-time error reporting.
  • New title templates.
  • New 2.5k and 4k profiles added
  • And see here for more details.

How to install OpenShot 2.2 in Ubuntu:

For Ubuntu 14.04, Ubuntu 16.04, Ubuntu 16.10, and their derivatives, e.g, Linux Mint 17, 18, follow the steps below to add OpenShot Stable PPA and install / upgrade the latest release:

1. Open terminal (Ctrl+Alt+T) and run command to add the PPA:

sudo add-apt-repository ppa:openshot.developers/ppa

Type in your password when it asks and hit Enter.


2. For those who have a previous Qt version installed, launch Software Updater and upgrade OpenShot after checking for updates.

or just run the commands below in terminal to check for updates and install OpenShot 2.2:

sudo apt update

sudo apt install openshot-qt

Oracle Virtualbox 5.1.12

A new maintenance release for Oracle Virtualbox 5.1 has been released one day ago with Linux hosts and guests fixes and kernel 4.9, 4.10, 2.2.68 compile fixes.

Changes in Virtualbox 5.1.12:

  • VMM: fixed VERR_IEM_ASPECT_NOT_IMPLEMENTED Guru Meditations with certain Linux guests if KVM paravirtualization is enabled
  • VMM: fixed VERR_VMX_UNABLE_TO_START_VM Guru Meditations under rare conditions
  • GUI: prevent a crash under certain conditions if the VM is terminated very early
  • GUI: fixed certain keyboard capture issues for OS X hosts.
  • GUI: fixed dragging guest windows in seamless mode with the keyboard captured (X11 hosts only)
  • GUI: fixed a problem where the new version detected dialog was covered by the appliance import dialog (Mac OS X hosts only
  • Storage: fixed NVMe reset processing when doing rmmod nvme; modprobe nvme in a Linux guest
  • Storage: fixed creating a snapshot when the VM is running and an NVMe controller is present
  • Storage: fixed a problem with the LsiLogic SCSI controller where requests could be lost with SMP guests
  • E1000: fixed “cable disconnected” issue for Mac OS X guests
  • E1000: fixed “TX unit hang” issue for Linux guests only
  • Parallel ports: fixed port enumeration on Windows host
  • API: don’t crash when sanitizing certain VM names
  • Linux hosts: automatically disable asynchronous I/O on Linux 2.6.18 kernels
  • Linux hosts / guests: Linux 2.6.28 compile fix
  • Linux hosts: compile Linux 4.9 compile fix
  • Linux Additions: warn the user about a known bug with older Linux guests (e.g. Debian 7) requiring manual work to get 3D working
  • Linux Additions: fix the graphics driver build with Linux 4.10 and later
  • Windows Additions: fixed a crash in the WDDM driver under certain conditions

Download / Install Virtualbox 5.1.12 in Ubuntu:

The official Linux binary packages are available for download at the link below:

Virtualbox Linux Downloads

Grab the package (i386 for 32-bit, or amd64 for 64-bit) for you system and click install via Ubuntu Software.

For those who have a previous VBox 5.1 release installed, launch Software Updater to upgrade the software if you have Virtualbox Linux repository added in your system:

upgrade virtualbox

To manually add Virtualbox Linux repository:

1. Open terminal (Ctrl+Alt+T) and run command:

sudo sh -c 'echo "deb xenial contrib" >> /etc/apt/sources.list.d/virtualbox.list'

Replace xenial in the code with yakkety (for 16.10), or trusty for 14.04 and Linux Mint 17.x.

Virtualbox Official Linux repository

2. Then setup the keyring:

wget -q -O - | sudo apt-key add -

wget -q -O- | sudo apt-key add -


Vimix is a flat Material Design theme for GTK 3, GTK 2 and Gnome-Shell which supports GTK 3 and GTK 2 based desktop environments like Gnome, Unity, Budgie, Pantheon, XFCE, Mate, etc.

This theme is based on Flat-Plat gtk theme of nana-4. The theme offers:

  • dark theme, dark doder, dark ruby.
  • light theme, light doder, light ruby.

Following pictures are Vimix theme with Numix icons in Unity Desktop (with plank):

Vimix Light with Numix icons

Vimix Light with Numix icons (Unity with Plank)

Vimix Dark with Numix icons in Unity

Vimix Dark with Numix icons in Unity

Install Vimix GTK Theme in Ubuntu 16.10:

The theme project page offers .deb and .rpm packages for Gtk 3.20 and Gtk 3.22. So you need at least Ubuntu 16.10.

Download Vimix Theme (Gtk3.20)

For other Gtk3.22 or other packages, go to

After installed the .deb packages via Ubuntu Software or dpkg command, launch Unity Tweak Tool, Gnome Tweak Tool, or other configuration tool and apply new GTK themes and enjoy!


KDE Plasma 5.8

The KDE Plasma desktop 5.8, the first LTS (long-term support) release, was finally made into the Backports PPA, available for Ubuntu 16.04 and Ubuntu 16.10.

KDE Plasma 5.8 was firstly released more than two months ago, and now its at version 5.8.4. It features:

  • A new Login and lock screen. Plasma wallpaper plugins can now be shown on the lock screen.
  • Support for right-to-left written languages
  • Simplified global shortcuts, global shortcuts can now be configured to jump to specific tasks within an application.
  • Many bug-fixes in multi-screen support
  • New default fonts: Google Noto font, monospace font.

How to install KDE Plasma 5.8 in Ubuntu via PPA:

KUbuntu Backports PPA has finally made the Plasma 5.8.4 as well as KDE Frameworks 5.28, available for Ubuntu 16.04 LTS and Ubuntu 16.10.

1. To add the PPA, open terminal and run command:

sudo add-apt-repository ppa:kubuntu-ppa/backports

kubuntu backports ppa

2. Then upgrade your system via command:

sudo apt update && sudo apt full-upgrade

After the upgrade process has completed, and assuming everything went well, reboot your computer.

For non-Kubuntu desktop, you may first install the Kubuntu desktop package from Ubuntu Software before doing the upgrade.


To undo the installation, install ppa-purge tool and purge the PPA via the command below. It will downgrade to the stock version of Plasma desktop in Ubuntu.

sudo apt install ppa-purge && sudo ppa-purge ppa:kubuntu-ppa/backports