This post will detail some stuff I’ve done to a plain Ubuntu 18.04 Desktop (bionic) to make me feel a little more at home in the transition from my daily driver for years the 16.04 release using Canoncial’s Unity as the primary desktop interface to the GNOME Shell of 18.04. Canonical abandoned the former after shifting focus from the convergence and personal device market to cloud and IoT in 2017 leaving development of its mobile OS, Ubuntu Touch which Unity is a part of, to the community formed UBports project (Unity8 is now known as Lomiri). I’ve been putting off this transition exactly because I knew it would require me to make some tweaks to my daily routines, but this system is not one I use on a daily basis so it will make the transition a gentle ride.

The intention is to update this as the experience progresses.

EDIT 2021-08-25: clean up and publish dormant draft post

Browsing GNOME Extensions

To be able to install GNOME Extensions directly from a browser while perusing the directory at extensions.gnome.org, add the GNOME Shell Integration extension/add-on to your browser (Firefox add-on, Chrome Web Store), then install the Integration extension in GNOME to communicate with the browser extension:

sudo apt install chrome-gnome-shell

After this you can go to extensions.gnome.org/local/ to see, configure and update installed extensions.

Useful GNOME Extensions

• Clipboard Indicator (source): access clipboard history
• Better Volume Indicator (source): adds scroll to adjust and middle-click to un/-mute
• Fuzzy Clock (source): changes time in notification area to textual clock
• Alarm Clock (source): shows alarm notifications for gnome-clocks (see below)

Time Keeping

World/Alarm/Stopwatch/Timer application

GNOME includes a nice Clock application which is available in the package repository but not installed by default;

sudo apt install gnome-clocks

Installing the Alarm Clock extension described above, will also show the application’s alarms in the notification area.

Notification bar

I like both the date and seconds to be displayed in the head of the desktop, so to format the text a couple of extensions are available;

• Clock Override (source)
• Panel Date Format (source)
• Datetime Format (source)
• More options described here, ;
  • https://askubuntu.com/questions/1096203/how-to-display-custom-formatted-clock-in-top-bar-on-multiple-displays-in-ubuntu
  • https://superuser.com/questions/573951/how-can-i-show-the-date-in-the-gnome-3-menubar
  • https://askubuntu.com/questions/968860/how-do-i-customize-the-date-time-display-in-gnome-shells-top-bar

• Took some photos with my Galaxy 7. Some were panoramas.
• EOG crashed while loading them.
• Memory was low.
• Maybe related to previously experienced missing EOI marker issue with Samsung camera application.

Will investigate later and amend the post (promise!).

Commandline Dump

$ free; find . -size +25M -exec bash -c 'ls -l {}; eog {}; echo' \;; free
              total        used        free      shared  buff/cache   available
Mem:        7746692     5767656      843228      317764     1135808     1271048
Swap:       7950332     5113012     2837320
-rw-rw-r-- 1 miki miki 39926496 Jun 10 19:25 ./20190609_184124.jpg

** (eog:23320): CRITICAL **: eog_reload_plugin_activate: assertion 'G_IS_MENU (model)' failed
eog: ../../../../src/cairo-xlib-surface-shm.c:619: _cairo_xlib_shm_pool_create: Assertion `*ptr != ((void *)0)' failed.
bash: line 1: 23320 Aborted                 (core dumped) eog ./20190609_184124.jpg

-rw-rw-r-- 1 miki miki 38286099 Jun 10 19:26 ./20190609_183714.jpg

** (eog:23332): CRITICAL **: eog_reload_plugin_activate: assertion 'G_IS_MENU (model)' failed
eog: ../../../../src/cairo-xlib-surface-shm.c:619: _cairo_xlib_shm_pool_create: Assertion `*ptr != ((void *)0)' failed.
bash: line 1: 23332 Aborted                 (core dumped) eog ./20190609_183714.jpg

-rw-rw-r-- 1 miki miki 36181801 Jun  9 17:13 ./20190609_160437.jpg

** (eog:23343): CRITICAL **: eog_reload_plugin_activate: assertion 'G_IS_MENU (model)' failed

** (eog:23343): CRITICAL **: eog_reload_plugin_deactivate: assertion 'G_IS_MENU (menu)' failed

-rw-rw-r-- 1 miki miki 39059177 Jun 10 19:25 ./20190609_184146.jpg

** (eog:23354): CRITICAL **: eog_reload_plugin_activate: assertion 'G_IS_MENU (model)' failed
eog: ../../../../src/cairo-xlib-surface-shm.c:619: _cairo_xlib_shm_pool_create: Assertion `*ptr != ((void *)0)' failed.
bash: line 1: 23354 Aborted                 (core dumped) eog ./20190609_184146.jpg

              total        used        free      shared  buff/cache   available
Mem:        7746692     5773448      495604      659944     1477640      922956
Swap:       7950332     5112700     2837632
$