Gnome photo manager and image viewer gThumb 3.11.2 was released a few days ago. Here’s how to install it in Ubuntu 20.04, Ubuntu 20.10, Linux Mint 20, Pop!_OS 20.04 via PPA.

gThumb 3.11.2 features minor UI improvements including:

  • a proportional zoom increment in image viewer
  • keep the same pixel under the pointer after zooming
  • read color profiles from png files as well.
  • Media viewer: use accurate seeking when clicking on the progress bar.
  • Media viewer: show the pointed time when hovering over the progress bar.
  • Browser: added support for back and forward mouse buttons.
  • Preferences: added option to show/hide the statusbar.
  • Rename files: added a button to revert to the last used template.

And there are some bug-fixes, new or updates translations in the release.

How to Install gThumb via PPA in Ubuntu:

The Dariusz Duma’s PPA seems not being updated except for auto-build packages. So again… I uploaded the gThumb 3.11.2 packages into the unofficial PPA, available for Ubuntu 18.04 (not tested), Ubuntu 20.04, and Ubuntu 20.10.

The packages were backported from the Debian Unstable / Ubuntu 21.04 build from this page.

NOTICE: I offer no warranty for any package in this PPA. While they may work for me, you use them at your own risk.

1.) To add the PPA, open terminal and run command:

sudo add-apt-repository ppa:ubuntuhandbook1/apps

2.) You can then either upgrade photo manager from an old version via Update Manager (Software Updater), or run command in terminal:

sudo apt install gthumb

Uninstall gThumb & the Ubuntu PPA

To remove gThumb photo manager and image viewer, run command:

sudo apt remove --autoremove gthumb gthumb-data

To remove the Ubuntu PPA, either run the apt-add-repository command with --remove flag, or use Software & Updates -> Other Software.

Run Ubuntu or other Linux with Gnome Desktop on E-Ink Displays? There’s now an E-Ink Mode Gnome Shell extension allows to easily toggle desktop appearance suitable for the monitors.

What does E-Ink Mode extension do:

  • Switch shell theme to built-in light high contrast one (User Themes extension is not required).
  • Switch GTK and icon theme to High Contrast
  • Switch Cursor theme to DMZ-White
  • Disable shell animations
  • Restore previous themes and animation settings when disable this extension

Though the things can be done manually step by step, the extension make it as easy as a toggle switch in Extensions tool. And so far Gnome 3.36 is supported.

How to Install E-Ink Mode extension:

1.) For Ubuntu, first make sure chrome-gnome-shell package is installed. And for the Extensions tool, install thethe gnome-shell-extension-prefs package:

sudo apt install chrome-gnome-shell gnome-shell-extension-prefs

2.) Go to the extension web page and turn on the toggle icon to install it.

Don’t see the toggle icon? Click the link which says “Click here to install browser extension” to install browser extension and refresh the web page.

It should enable E-Ink Mode once you installed the extension. To toggle off or remove it, use Extensions tool.


KeePass password manager 2.47 was released user interface and integration enhancements and minor new features and improvements.

KeePass 2.47 release highlights:

  • Save search parameters as profiles, access via menu ‘Find’->’Search Profiles’.
  • Add ‘XPath expression’ search mode.
  • Add ‘Histop’ option in Find dialog.
  • Add ‘Help’ button in Find dialog.
  • Add auto-type matching option ‘Consider similar dashes as identical’.
  • Add commands ‘Copy Group (Encrypted)’, ‘Copy Group (Unencrypted)’ and ‘Paste Group’.
  • Added {TIMEOTP} placeholder, generates a time-based one-time password.
  • Enhanced XML key file format.
  • Add command ‘Print Key File Backup’.
  • Add command ‘Create Key File’.
  • Add Argon2id key derivation function.
  • Add support for importing Dashlane 6.2039.0 JSON files.
  • Add a few more options in the import/export dialog.
  • Plugins can now disable/enable specific Mono workarounds.

How to Install KeePass 2.47 in Ubuntu via PPA:

Although there’s a Linux native community fork KeePassXC available, KeePass2 is still available to install via an Ubuntu PPA. So far, the PPA supports for Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04, and Ubuntu 20.04.

1.) Open terminal and run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/keepass2

2.) Then refresh system package cache via command:

sudo apt update

3.) Finally install the mono based password safe package:

sudo apt install keepass2

Uninstall KeePass2:

To remove the software package, run command in terminal:

sudo apt remove --autoremove keepass2

And remove the Ubuntu PPA via command:

sudo add-apt-repository --remove ppa:ubuntuhandbook1/keepass2

Linux Mint 20.1, code-name “Ulyssa”, was officially released. It includes Linux Kernel 5.4, based on Ubuntu 20.04, and features Xfce 4.14, Cinnamon 4.8, and MATE 1.24 for each desktop edition.

Linux Mint 20.1 is a long term support release which will be supported until 2025. New features in the release include:

  • Web App manager to turn any web page into desktop application.
  • A new IPTV Player, Hypnotix
  • Favorites support in Nemo file manager, Xed, Xreader, Xviewer, Pix and Warpinator.
  • Removed ippusbxd, printing and scanning work the same way as in Linux Mint 19.x.
  • Updated to HPLIP 3.20.11.
  • Hardware video acceleration enabled by default in Celluloid.
  • The driver manager was migrated to PackageKit.
  • Added Chromium browser package to the repository.
  • Clock format in the login screen is configurable.
  • A unified filesystem layout, superb collection of backgrounds, and more.

Linux Mint 20.1 system requirements:

  • 1GB RAM (2GB recommended for a comfortable usage).
  • 15GB of disk space (20GB recommended).
  • 1024×768 resolution (on lower resolutions, press ALT to drag windows with the mouse if they don’t fit in the screen).

Download / Upgrade to Linux Mint 20.01:

For the official announcements as well as iso images download link, simply go to

To upgrade from Linux Mint 20 to Linux Mint 20.1:

1. Use TimeShift to create a system snapshot, so you can easily restore your system if anything goes wrong.

2. Disable your screensaver, and upgrade installed Cinnamon spices (applets, desklets, extensions, themes) from System Settings.

3. Open Update Manager and click on the Refresh button. If there are updates for mintupdate or mint-upgrade-info, apply them.

Then go to menu “Edit->Upgrade to Linux Mint 20.1 Ulyssa” to launch system upgrade.

Follow the wizard and reboot once the upgrade is finished.

4. (optinal) To convert the system with usrmerge, simply run command:

sudo apt install usrmerge

Luminance HDR

Luminance HDR 2.6.1, free and open-source HDR imaging software, is available to install in Ubuntu 20.04, Ubuntu 20.10, Linux Mint 20.

Before it’s officially announced the new release source tarball now is available to download. And Luminance HDR 2.6.1 is a bug-fix release the features:

  • Better UI for last step of HdrWizard
  • Fix highlights glitch
  • Fix save/load response cure even from the command line
  • Fix scrolling of progress area in BatchHDR
  • Some other bug-fixes and translation updates.

How to Install Luminance HDR via Ubuntu PPA:

The Dariusz Duma’s PPA was maintaining the software package. It however seems not being updated except for auto-build packages.

For those sticking to an Ubuntu PPA, there’s an alternative unofficial PPA available and you can run following steps one by one to get it in your Ubuntu.

1.) Open terminal from system application menu and run command to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/apps

2.) Then install the HDR creator via command:

sudo apt install luminance-hdr


To remove the software package, simply run command:

sudo apt remove --autoremove luminance-hdr

And to remove the Ubuntu PPA, open Software & Updates navigate to Other Software tab and remove the relevant line.