How to fix error of Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead in Ubuntu Linux 22.04 LTS or Linux Mint 21

In Ubuntu 22.04 LTS or Linux Mint 21, there has been a change in the way keys to repos are stored. When installing software like Spotify from the internet via instructions there, the commands used cause an error when running apt-get update. The following error appears: Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d … Continue reading How to fix error of Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead in Ubuntu Linux 22.04 LTS or Linux Mint 21

How to find out SSD details on a Linux computer

Open a terminal window and enter the following to find out technical information of an SSD installed in the computer using Linux. $ sudo hdparm -i /dev/sda <enter> /dev/sda:Model=CT500MX500SSD1, FwRev=M3CR043 Visit https://www.crucial.in/support/ssd-support/mx500-support to check if there is a firmware upgrade for the SSD.

How to install Linux Mint 20.3 on Crucial MX500 SATA SSD drive on Dell Vostro 3546 laptop

The humble Dell Vostro 3546 is an old laptop from 2014, which came with an Intel 4th Generation 4210U processor, 1 TB SATA 5400 rpm hard disk and 4 GB DDR3 (low voltage) 1.35V RAM. It worked fine till now even when it ran Linux Mint 20.3 with Blender 3D. However, everytime an Android app … Continue reading How to install Linux Mint 20.3 on Crucial MX500 SATA SSD drive on Dell Vostro 3546 laptop

How to improve performance of Linux Mint XFCE on old computer

Decrease swappiness whereby the use of swap is curtailed$ cat /proc/sys/vm/swappiness <enter>returns the value of swappiness which is 60 initially. Make this 20 as follows:$ sudo xed /etc/sysctl.conf <enter>Add a line to the end of the filevm.swappiness=20Save the file. Disable Java in LibreofficeOpen Libreoffice Writer.Go to Tools -> Options -> Advanced -> Java OptionsUncheck Java … Continue reading How to improve performance of Linux Mint XFCE on old computer

How to securely wipe a hard drive or USB drive in Linux using dd or scrub

Normally we'd use dd to clean wipe a hard drive as follows after opening a terminal window for a hard disk or USB drive accessible as /dev/sdb :$ sudo dd if=/dev/urandom of=/dev/sdb status=progress <enter> Another command to do a secure wipe of /dev/sdb is scrub that can be used as follows:$ sudo scrub -p dod … Continue reading How to securely wipe a hard drive or USB drive in Linux using dd or scrub

Dell Support Experience to order and replace laptop battery

This is based on the experience of one of my family with Dell Support whose Dell Inspiron uses a 3 cell 4.1V 3500 mAH Li-ion battery - part number FW8KR11. This was confirmed in Linux using dmidecode. Open a terminal window and enter the command below.$ sudo dmidecode <enter>Portable BatteryLocation: Sys. Battery BayManufacturer: BYDManufacture Date: … Continue reading Dell Support Experience to order and replace laptop battery

How to increase font size of menus, lists in Spotify in Linux

To scale the font size of Spotify on Linux, open a terminal window and enter the following command.$ spotify --force-device-scale-factor=1.5 <enter> You will find that spotify menus are now bigger and more readable. To make them scale permanently whenever Spotify starts, create a desktop shortcut and put the scaling factor in the desktop file. $ … Continue reading How to increase font size of menus, lists in Spotify in Linux

How to restore or reinstall package uninstalled on android using adb

To reinstall an existing uninstalled package on a Samsung Android phone, connect the device to the computer in developer mode and start up ADB. List all uninstalled packages and check the package name that is to be reinstalled, for example, gallery3d, in the adb window, enter:pm list packages -u | grep "gallery" <enter> To install … Continue reading How to restore or reinstall package uninstalled on android using adb

How to run latest India income tax utility for the Financial Year 2021-22 (AY 2022-23) in Linux

The India income tax department has launched a new tax portal and has also created new income tax utilities to enable income tax returns filers to file their tax returns. Past years' utilities could be run on Linux or any other operating system because they were written in Java. However, this time, the utilities are … Continue reading How to run latest India income tax utility for the Financial Year 2021-22 (AY 2022-23) in Linux