January 2022 - Page 2

How to uninstall and block updates and drivers from installing in Windows 11

Posted by Alex On January 25, 2022

Windows 11 automatically downloads and installs all updates. This includes security updates, feature updates, and driver updates provided through Windows Update. This is usually fine, but if a driver or update is causing problems, you can uninstall it and block it from being installed again. Step One: See What Updates and Drivers Have Been Recently Installed If you're not sure...

Script to connect and disconnect from OpenVPN depending on server availability

Posted by Alex On January 25, 2022

Task: Branch subnets are connected via OpenVPN. All clients connect to the server and routes to the Internet are set through the OpenVPN server. Everything works, but there is a problem. If the OpenVPN server for some reason loses Internet connection, then all other branches also lose Internet access, because the traffic does not go through its gateway, but through...

Do services need to be restarted when updating packages

Posted by Alex On January 24, 2022

Package configuration: whether to restart the service During the installation of package updates and their configuration, the apt program may ask you to restart the service: There are services installed on your system which need to be restarted when certain libraries, such as libpam, libc, and libssl, are upgraded. Since these restarts may cause interruptions of service for the system,...

Changes in the linux-firmware package: kernel requirements, separating large files into separate packages

Posted by Alex On January 24, 2022

In Arch Linux, the linux-firmware package, which contains the firmware files, got important changes. In addition to the usual file updates and adding support for new devices, this package has a requirement for a minimum kernel version, and the package itself is divided into several packages. Recall that device firmware are files that are necessary for the normal operation of...

error: failed to synchronize all databases (unable to lock database) (SOLVED)

Posted by Alex On January 14, 2022

When trying to update Arch Linux or a distribution based on it (for example, Manjaro or BlackArch), an error “failed to synchronize all databases (unable to lock database)”" may occur. For example, when entering the command sudo pacman -Syu It can be output: :: Synchronizing package databases... error: failed to synchronize all databases (unable to lock database) This means that...

How to turn off Bluetooth to disable pairing and any connections

Posted by Alex On January 12, 2022

How to permanently disable Bluetooth on Linux This note shows how to remove the bluetooth completely, as well as exclude any possibility of connecting it. Start by deactivating and uninstalling the bluetooth service. Remove from startup and stop the bluetooth service: sudo systemctl disable bluetooth sudo systemctl stop bluetooth Remove the bluez package. On Debian and derivatives: sudo apt remove...

How to find out the Bluetooth version for the adapter and peripherals in Linux

Posted by Alex On January 12, 2022

Bluetooth management in Linux Linux uses utilities to control Bluetooth from a package called bluez in Debian and derivatives, and bluez-utils in Arch Linux and derivatives. But some time ago, a number of Bluetooth management tools were declared deprecated, although no alternative was proposed to them. Different distributions solve this problem in different ways. On Debian and derivatives, the bluez...

How to remove Mobile broadband and Bluetooth connection in NetworkManager

Posted by Alex On January 10, 2022

NetworkManager is a universal application for managing all kinds of network connections: wired connections wireless connections USB modem Bluetooth modem Wired and wireless connections can be deleted in the Network Settings and Network Connections interfaces. With Mobile broadband connections (using a mobile phone as a USB modem) and Bluetooth connections, the situation is somewhat different. In Network Settings, when you...

Where NetworkManager stores settings (SOLVED)

Posted by Alex On January 9, 2022

NetworkManager Configuration Files NetworkManager supports various plug-ins that can define new locations for storing configuration information. The main configuration file for NetworkManager, which is usually changed, is /etc/NetworkManager/NetworkManager.conf. You can view its contents with the following command: cat /etc/NetworkManager/NetworkManager.conf In addition to this file, NetworkManager settings can be saved in the /etc/NetworkManager/conf.d and /usr/lib/NetworkManager/conf.d directories. For a list of all...