Recover encrypted ecryptfs home folder from encrypted dm-crypt luks disk volume

Whew… saved by the skin of teeth.

The grub2 bootloader of my computer got corrupt. I was not able to boot into the computer and all was lost. For security reasons, I set up LVM with full disk encryption. Thereafter, each user’s home folder was further encrypted with ecryptfs (the default you get when you . . . → Read More: Recover encrypted ecryptfs home folder from encrypted dm-crypt luks disk volume

Superb applications for graphics or photo processing darktable and rawtherapee

If you need to process images, use darktable and rawtherapee

To install in Xubuntu or Ubuntu, open a terminal window and enter the following commands: $ sudo apt-get install darktable rawtherapee <enter>

Once you are done, go ahead and process photographs like a professional. Need I say that this is a good combination to substitute . . . → Read More: Superb applications for graphics or photo processing darktable and rawtherapee

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

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

How to disable user list and guest user login in Ubuntu 16.04 LTS

To disable the user list and guest user login in Ubuntu 16.04 LTS login screen, open a terminal window and do the following:

$ cd /etc/lightdm <enter> $ sudo mkdir lightdm.conf.d <enter> $ sudo cd lightdm.conf.d <enter> $ sudo mousepad 50-config.conf <enter>

Enter the text below into the file.

[SeatDefaults] greeter-hide-users=true greeter-show-manual-login=true allow-guest=false

Save the . . . → Read More: How to disable user list and guest user login in Ubuntu 16.04 LTS

How to fix Eclipse Tab Size, Spacing between menu options and more in Xubuntu 16.04 LTS

Using Numix as the theme on Xubuntu 16.04 LTS, we find that Eclipse IDE toolbars, fonts, menus have excessive spaces between them. They look too big and take away screen real estate forcing you to scroll more.

If you change the Settings -> Appearance to Greybird and Settings -> Window Manager to Daloa or something . . . → Read More: How to fix Eclipse Tab Size, Spacing between menu options and more in Xubuntu 16.04 LTS

Android Virtual device emulator not starting up or very slow with error sh: 1: glxinfo: not found

Android Virtual device emulator not starting up or very slow with error sh: 1: glxinfo: not found takes a very long time to start the emulator and finally returns with an error.

To resolve the above error, do following: $ sudo apt-get install lib64stdc++6 <enter>

Then create a link to the new 64 bit libraries . . . → Read More: Android Virtual device emulator not starting up or very slow with error sh: 1: glxinfo: not found

How to fix Unknown media type in type all/all and more due to kde.xml in Linux

If you get the below errors and are not using the KDE desktop environment, it could be that you installed some KDE program like Okular and then removed it, as a result it caused the mime types to give following errors:

Unknown media type in type ‘all/all’ Unknown media type in type ‘all/allfiles’ Unknown media . . . → Read More: How to fix Unknown media type in type all/all and more due to kde.xml in Linux

How to get back missing Dropbox icon in the Ubuntu panel

I noticed that my dropbox icon went missing due to a bug in Dropbox. To restore it, I came across this post, and at the command line, had to issue following commands after opening a terminal window:

First, install libappindicator1 once by: $ sudo apt-get install libappindicator1 <enter>

Now, each time, the below commands need . . . → Read More: How to get back missing Dropbox icon in the Ubuntu panel

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