qBittorrent torrent client 4.1.6 was released a few days ago. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, and Ubuntu 19.04.

qBittorrent 4.1.6 is a bug-fix release with following changes:

  • Force recheck multiple torrents one by one in all possible cases.
  • Don’t query Google for tracker favicons, for privacy reasons
  • Work around the crash occurred in QTimer.
  • Increase the .torrent file download size limit to 100 MiB
  • Disable downloading tracker favicons by default. Works around reported crashes in Linux.
  • WEBUI improvements and fixes.
  • SEARCH: Make num enter key work the same as return in searchjobwidget
  • Make window title bar icon work in Wayland
  • Update appdata.xml file for Linux

How to Install qBittorrent 4.1.6 in Ubuntu:

The official qBittorrent PPA contains the latest packages for Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, and Ubuntu 19.04.

1. To add the PPA, open terminal either via Ctrl+Alt+T or by searching “Terminal” from app launcher. When it opens, run:

sudo add-apt-repository ppa:qbittorrent-team/qbittorrent-stable

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

2. To upgrade from a previous release, launch Software Updater and you’ll see qBittorrent available for upgrade after checking for updates.

upgrade qBittorrent

Or run commands below to install /upgrade it from terminal:

sudo apt update && sudo apt install qbittorrent


To remove qBittorrent PPA, go to Software & Updates -> Other Software, or run command in terminal:

sudo add-apt-repository --remove ppa:qbittorrent-team/qbittorrent-stable

To remove the bittorrent client, either use your system package manager or run command:

sudo apt-get remove --autoremove qbittorrent

upgrade Linux Kernel

The latest stable Linux Kernel 5.1 was released. Linus Torvalds announced last night:

So it’s a bit later in the day than I usually do this, just because I was waffling about the release. Partly because I got some small pull requests today, but mostly just because I wasn’t looking forward to the timing of this upcoming 5.2 merge window.

On the whole, 5.1 looks very normal with just over 13k commits (plus another 1k+ if you count merges). Which is pretty much our normal size these days. No way to boil that down to a sane shortlog, with work all over.

Linux 5.1 brings many exciting changes including improved support for Intel Fastbook (enabled by default), Intel 22260 WiFi support, new I/O interface, new ACPI support, Raspberry Pi 3 Model A+ support by mainline, and a lot of new hardware support.

How to Install Linux Kernel 5.1 in Ubuntu:

The mainline kernels do not include any Ubuntu-provided drivers or patches. They are not supported and are not appropriate for production use

The mainline kernel packages for Linux 5.1 are available for download at the link below:

Download Kernel 5.1

Depends on your OS type, download and install the packages in turns:

  1. linux-headers-5.1.0-xxxxxx_all.deb
  2. linux-headers-5.1.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb
  3. linux-modules-5.1.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb
  4. linux-image-xxx-5.1.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb

Select generic for common system, and lowlatency for a low latency system (e.g. for recording audio), amd64 for 64bit system, i386 for 32bit system, or armhf, arm64, etc for other OS types.

Alternatively you can download and install the kernel binaries via terminal commands (Ctrl+Alt+T):

For 64-bit OS:

cd /tmp/

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-headers-5.1.0-050100_5.1.0-050100.201905052130_all.deb

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-headers-5.1.0-050100-generic_5.1.0-050100.201905052130_amd64.deb

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-image-unsigned-5.1.0-050100-generic_5.1.0-050100.201905052130_amd64.deb

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-modules-5.1.0-050100-generic_5.1.0-050100.201905052130_amd64.deb

sudo dpkg -i *.deb

for 32-bit OS:

cd /tmp/

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-headers-5.1.0-050100_5.1.0-050100.201905052130_all.deb

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-headers-5.1.0-050100-generic_5.1.0-050100.201905052130_i386.deb

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-image-5.1.0-050100-generic_5.1.0-050100.201905052130_i386.deb

wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1/linux-modules-5.1.0-050100-generic_5.1.0-050100.201905052130_i386.deb

sudo dpkg -i *.deb

Once installed, restart your computer and enjoy!

Uninstall Linux Kernel 5.1:

Restart your machine and select boot with the previous kernel in boot menu ‘Grub2 -> Advanced Option for Ubuntu’. Then run command to remove Linux Kernel 5.1:

sudo dpkg --purge linux-image-5.1.0-050100-generic linux-image-unsigned-5.1.0-050100-generic

Qmmp Qt-based multimedia player

Qmmp, Qt-based multimedia player, 1.3.2 was released last night with new features and various bug-fixes.

Qmmp 1.3.2 (and 0.12.2 for qt4) features:

  • added feature to play track on double click in the history plugin;
  • enabled mpg123 decoder for Windows;
  • using album cover from file by default;
  • fixed lyrics plugin;
  • fixed API documentation;
  • fixed issue with read-only mode for FLAC files;
  • fixed issue with missing properties for some CUE tracks;
  • fixed shortcuts displaying in context menus under Qt 5.10 or higher (1.3.2 only);
  • fixed Qt 5.13 support (1.3.2 only);
  • fixed crash under Wayland session (1.3.2 only);
  • fixed freezing on some corrupted files in the ffmpeg plugin;
  • fixed crash on some streams in the ffmpeg plugin;
  • fixed file type determination by content in the mpeg plugin.


How to Install Qmmp 1.3.2 in Ubuntu:

Qmmp 1.3.2 (and 0.12.2 for qt4) are available to install via its official PPA, for Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04, Linux Mint 18.x and 19.x.

1. Open terminal via Ctrl+Alt+T or from app launcher, and then run command to add the PPA:

sudo add-apt-repository ppa:forkotov02/ppa

Input your password (no asterisks feedback while typing) and hit Enter to continue.

2. If a previous version exists, upgrade Qmmp using Software Updater:

Or run commands to install or upgrade Qmmp and its plugins:

sudo apt-get update

sudo apt-get install qmmp qmmp-plugin-pack

For qt4 version, use qmmp-qt4 and qmmp-plugin-pack-qt4 instead in the last command.


You can manage the PPA repository via Software & Updates utility, under Other Software tab.

To remove Qmmp music player, either use your system package manager or run command:

sudo apt-get remove --autoremove qmmp qmmp-*

Slimbook battery is a battery optimization tool that works on Gnome, KDE, Unity, Cinnamon, and MATE desktop.

The software offers a system tray application indicator with three energy modes: Energy Saving, Balanced, and Maximum Performance. Also an ‘Off‘ menu option is available to turn off the optimization.

Each energy mode comes with default values. User is allowed to change the most important values via the Preferences (Advanced mode).

How to Install Slimbook battery in Ubuntu:

Slimbook’s official PPA contains the latest packages for Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04, and their derivatives.

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

sudo add-apt-repository ppa:slimbook/slimbook

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

2. Then refresh system package cache and install the tool:

sudo apt update

sudo apt install slimbookbattery

Once installed, launch it from application menu and enjoy!


To remove the tool, open terminal and run command:

sudo apt remove --auto-remove slimbookbattery

And remove the PPA either via Software & Updates-> Other Software, or by running command:

sudo add-apt-repository --remove ppa:slimbook/slimbook

brackets code editor

Brackets 1.14 was released with PHP, Language Server Protocol support. Here’s how to install it in Ubuntu 18.04.

Brackets 1.14 release highlights:

  • Language Server Protocol support.
  • PHP Tooling support. Tooling includes: Code Hints, Parameter Hints, Linting, Jump To Definition, Find References, Find Document/Project Symbols.
  • Framework for in-app notifications
  • Auto-update bug fixes
  • Update notification targeted to a specific platform

How to Install Brackets 1.14 in Ubuntu:

Snap package:

The easiest way to install the editor is using the community maintained snap (run in sandbox) package.

For Ubuntu 18.04 and higher, simply search for and install it via Ubuntu Software:

For Ubuntu 16.04, open terminal (Ctrl+Alt+T) from application menu and run 2 commands one by one:

sudo apt-get install snapd

sudo snap install brackets --classic

.Deb package:

The developer team offers official .deb packages, available for download at the release package:

Brackets Releases (deb)

Grab the package, and install it via Gdebi (install it via Ubuntu Software) package installer.

NOTE in my case the deb is conflict with some other packages, e.g., curl, kicad. They will be removed while installing the deb.

Remove Brackets

To remove the snap package, either use Ubuntu Software, or run command in terminal:

sudo snap remove brackets

To remove the official .deb package, run command in terminal:

sudo apt remove --auto-remove brackets