How to clean DVD surface that has sticky substance or layer of fungus on it

Simple, just use alcohol (brandy) to remove sticky dirt, dust on the surface of a DVD or a CD. It works wonders and removes it in one go. Dip a piece of cotton in brandy and wipe the disc surface inward to outward and not in a circular motion.

Managed to salvage a 15 years . . . → Read More: How to clean DVD surface that has sticky substance or layer of fungus on it

How to view Microsoft XPS files on an Android device

Microsoft Windows gives users an option to save documents as XPS files while printing. Though XPS may be popular on Windows Operating System and easily portable, there are challenges when viewing XPS files on Android devices.

Fortunately, a Document Viewer app at this link https://play.google.com/store/apps/details?id=org.sufficientlysecure.viewer&hl=en is able to open and display XPS files accurately. Install . . . → Read More: How to view Microsoft XPS files on an Android device

How to fix excessive CPU usage by process tumblerd on XFCE desktop in Linux

Noticed that each time I added or downloaded a file, it resulted in excessive use of the CPU. This happens on XFCE desktop in Linux. Looking up the process list, found that tumblerd was utilizing up to 86% of the CPU and leading all other applications and processes to be very slow. Tumbler is used . . . → Read More: How to fix excessive CPU usage by process tumblerd on XFCE desktop in Linux

How to play DVDs on Ubuntu Linux computer

If you want to play Movie DVDs on Linux, then the earlier method of will not work anymore on Ubuntu 16.04 LTS. To start playing movie DVDs, do the following.

$ sudo apt-get install libdvd-pkg <enter>

Once you are done installing above package, the DVDs can be played flawlessly using VLC.

How to change the host name of Linux computer

On a Linux computer, you can change the host name anytime you like following the method given below after opening a terminal window.

$ sudo vi /etc/hosts <enter>

127.0.0.1 mycomputer.mydomain.com <enter> :wq

$ sudo vi /etc/hostname <enter> Insert mycomputer.mydomain.com <enter> :wq

$ sudo hostname -F /etc/hostname <enter>

Now check if hostname has changed $ . . . → Read More: How to change the host name of Linux computer

How to mitigate the threat of being a victim of ransom ware

Ransom ware seems to have gotten the better of many ordinary users. However, it is not a threat that has no mitigation measures available to the ordinary user, but is more of following good basic security and hygiene practices, to not fall prey to a ransom ware threat. Do the following:

If you use Linux, . . . → Read More: How to mitigate the threat of being a victim of ransom ware

apt-get dist-upgrade freezes at reading package lists due to appstreamcli in Ubuntu

Today, when I attempted to update the Ubuntu system to install the latest patches, the system hanged infinitely at the sudo apt-get update command. This appears to be a bug, but nonetheless, system patching is our priority and this is the workaround, till it gets fixed. To type the commands below, open a linux terminal . . . → Read More: apt-get dist-upgrade freezes at reading package lists due to appstreamcli in Ubuntu

Dark background and light text firefox add-ons good for night mode

If you surf the internet using Firefox web browser at night, you will find the white background and dark text too bright for the eyes. To change the background to black and light text, use the Dark Background and Light Text 0.5.5 add-on in Firefox.

Add-on is available in Firefox and it’s source code at . . . → Read More: Dark background and light text firefox add-ons good for night mode

Error 1 when building Cyanogen Mod 12.1 for Sony Xperia ZR dogo in Linux

When building Cyanogen Mod 12.1 for the Sony Xperia ZR dogo in Ubuntu Linux, I got the following error.

android/system/common/obj/JAVA_LIBRARIES/framework-base_intermediates/classes-full- debug.jar *** Error 1

To fix, open a terminal window and do the following: $ cd ~/android/system <enter> $ rm -rf out <enter> $ repo sync <enter> $ source build/envsetup.sh <enter> $ breakfast dogo <enter> . . . → Read More: Error 1 when building Cyanogen Mod 12.1 for Sony Xperia ZR dogo in Linux

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