Overview for linux

How to start bluetooth.service in Linux Lite [with screenshots]

Sometimes while making an attempt to connect a device through Bluetooth on your Linux Lite system, you can face a problem with connection:

Connection to BlueZ failed

Bluez daemon is not running, blueman-manager cannot continue. This is probably means that there were no Bluetooth adapters detected or Bluetooth daemon was not started.

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Written by Administrator on Saturday June 6, 2020

How to find you linux version in AryaLinux

There are several command to run to get your AryaLinux version information. It depends, what precisely you want to see, but in AryaLinux you can use same commands like in other Linux distros:

$ uname -a
$ cat /etc/*-release
$ cat /proc/version

Result:

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Written by Administrator on Tuesday May 12, 2020

Installing MinerGate on Ubuntu live-USB

If you are fan of mining cryptocurrencies and have experience with MinerGate application now you know you can install and run it while using Ubuntu live-USB (without any harm to your existing system even without installation of Ubuntu).

First, you should know, that you surely won't be able to install MinerGate application right after you booted from you live-USB Ubuntu. The reason is, that download and installation of MinerGate requires Universe repository.

Adding universte repository:

$ sudo add-apt-repository universe

Right after that you will surely need libqt5websockets (or libqt5websockets5-dev) library, because that library is not standard part of Ubuntu Live-USB. Now, when universe repository was added, you should do it without a problem:

$ sudo apt-get install libqt5websockets5-dev

(more information here: how to install libqt5websockets library in Ubuntu).

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Written by Administrator on Tuesday May 12, 2020

Ubuntu error: unable to locate package libqt5websockets5-dev : Solution

In case you're running Ubuntu USB live distro and trying to install  libqt5websockets5 or libqt5websockets5-dev package and your Ubuntu system cannont find it:

$ sudo apt install libqt5websockets
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libqt5websockets

In case you are going to install libqt5websockets5 package, system will fail to do it and will show you following error in terminal:

$ sudo apt install libqt5websockets5
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libqt5websockets5 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package 'libqt5websockets5' has no installation candidate

it surely means that you are missing official Ubuntu repositories.

Solution

Solution is very simple and easy: add (activate) needed repository:

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Written by Administrator on Tuesday May 12, 2020

How to install Signal Desktop messenger on Linux Lite?

Signal is very popular messenger and mostly is used like mobile phone application on mobile phones, but you can install it on your Linux desktop as well. I will show, how in install Signal desktop application on Linux Lite, which is Ubuntu-based distro and it means it uses the same repositories like Ubuntu linux.

Following Signal installation manual will work on every Debian-based linux distro.

Install Signal on Linux Lite desktop

All you need to to is to run following commands in your terminal

curl -s https://updates.signal.org/desktop/apt/keys.asc | sudo apt-key add
echo "deb [arch=amd64] https://updates.signal.org/desktop/apt xenial main" | sudo tee -a /etc/apt/sources.list.d/signal-xenial.list
sudo apt update && sudo apt install signal-desktop

output:

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Written by Administrator on Tuesday May 12, 2020

Atom installation on openSUSE Linux: Signature verification failed error resolution

Atom is a very popular "hackable text editor for the 21st Century" not only for linux, but owners of openSUSE Linux can have problems with unsigned package while installing an .rpm package:

Error: INVALID:atom-1.46.0-0.1.x86_64(file-eca764a8): Signature verification failed [6-File is unsigned]

If you still want to install it on your openSUSE system, there's a problem resolution:

  1. Go to /etc/zypp
  2. Open file zypp.conf (as a root) and find a line # pkg_gpgcheck = unset -> according to gpgcheck.Leave this line without change :D
  3. Add following line above: pkg_gpgcheck = off
  4. Save file and exit.
  5. Install Atom .rpm package one more time. It will go without a problem.

Following this operation will switch off package signature verification and you will be able to install Atom.


Important notice

Problem with unsigned package was added to issues on official Atom github repository several years ago, but developers still didn't resolve it. Please, take this information with understanding, that Atom is being developed by a group of people, who have programmed very popular and really great text editor for several programming languages and platforms totally free.

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Written by Administrator on Monday May 11, 2020