How to Install Enlightenment 0.21.8 on Ubuntu 16.04, 17.04

   The original reason Enlightenment exists - The Window Manager. From here everything else spawned. This is really the flagship product, closely followed by EFL itself. The window manager is a lean, fast, modular and very extensible window manager for X11 and Linux. It is classed as a “desktop shell” providing the things you need to operate your desktop (or laptop), but is not a whole application suite. This covers launching applications, managing their windows and doing other system tasks like suspending, reboots, managing files etc.

Enlightenment 0.21.8 Changelog:
Al Poole

•     Fix macro namings in relation to endianness.
•     Fix compiler type warnings (snprintf)
•     E keyboard settings - use the same icon as the keyboard settings dialog
•     Add user to AUTHORS.

Carsten Haitzler

•     e randr2 - fix freeing of stringshare by making it a stringshare
•     fix fullscreen no blank logic in e's dpms code
•     further fixes to screensaver/banking with window states like fullscreen

Mike Blumenkrantz

•     hide wl clients before deleting them on surface destroy
•     comment out inlist member of E_Comp_Object struct
•     better protect comp object internals from dereferencing freed clients
•     add all wl client frame callbacks with priority AFTER
•     unset deskmirror client's client pointer upon client deletion
•     unset deskmirror client's client pointer upon client deletion
•     defer menu activation mouse-up feed
•     set ON_HOLD when activating start gadget
•     add handler for EFREET_EVENT_DESKTOP_CACHE_BUILD to e_order init
•     do not use saved e_randr screens if fake screens have been added
•     do not force comp objects to render for their proxies if real_hid is set
•     show x11 parent windows during reparent only if not withdrawn
•     return during comp object pixels function if client was deleted during render
•     perform frame adjustments before applying wm spec hints during unmaximize
•     only save client size info on maximize/fullscreen when protocol visible
•     check changes.pos during client maximize/fullscreen and adjust window coords
•     do not start xwayland repeatedly
•     call wl/x compositor shutdown functions directly during comp shutdown
•     force iconic state for iconic x11 clients during shutdown
•     move x11 iconic window init from e_hints → comp_x initial fetch
•     call e_randr2_shutdown in comp shutdown
•     handle null E_Comp→screen during randr2 shutdown
•     don't set minw for keyboard layout dialog
•     only hide wl clients on surface destroy when surface is mapped
•     handle nested compositor delete requests
•     only set toolbar icon min size if icon exists
•     always use jobs to create bryce menus
•     handle window icons from elm for internal wins
•     only re-set comp object position during show if client has been placed
•     set dialog and tooltip flags for internal clients
•     add wrappers for elm_win util create functions
•     send wl client resize edges during focus-in/out send_configure
•     set signal move/resize clients as action_client internally
•     compare against e_client_action_get() for rejecting wl mouse events
•     Revert “Stop sending wayland motion events when the mouse is grabbed”
•     do not send mouse events to ssd wl clients if mouse is within ssd region
•     use even more accurate wl callbacks for detecting ssd mouse in/out events
•     always feed mouse events for wl client move events
•     block x11 focus eventing under xwayland
•     do not attempt to set window hidden hints on non-internal x11 windows
•     account for late object setup when adding ssd mouse in/out callbacks
•     disable client maximize anims when unmaximizing before a fullscreen
•     always set E_Client→need_fullscreen when fullscreening
•     force e_client_unmaximize() to complete during fullscreen operation
•     slightly optimize maximize → fullscreen protocol comms for wl clients
•     check pixmap size before triggering maximize animation
•     force animationless re-maximize when unfullscreening
•     only center internal windows once
•     adjust size for frame geometry in no-animation maximize path
•     call “maximize” smart callback before “maximize_pre”
•     re-set backlight level when resuming from suspend
•     add a client's children to the skiplist during place routine
•     do not arbitrarily center “lost” child windows, center them on the parent
•     support clients as positioner objects in e_comp_object_util_center_on()
•     add cache for dead x11 manager windows
•     remove uuid references from e_pixmap.c
•     re-set list of default desklock bgs when changing to custom bg in config
•     set pass events on efm icons when deleting files
•     make RENDER_DEBUG activate with E_RENDER_DEBUG env var
•     make SHAPE_DEBUG activate with E_SHAPE_DEBUG env var
•     explicitly set nested wl output canvas as a toplevel window
•     avoid refocusing deleted wl clients during comp input ungrabbing
•     set initial x11 window geometry for windows which do not have wm hints
•     check image load error when checking dmabuf viability in gl
•     better handling for iconify during comp object show/hide
•     do not show iconic x11 clients on on icccm hint change

Installation instructions:

  For all current Ubuntu releases and derivatives, Enlightenment 0.21.8 is available for install via the PPA repository.
    Open terminal and insert command line...

$ sudo add-apt-repository ppa:niko2040/e19 $ sudo apt-get update $ sudo apt-get install enlightenment

If everything goes well, log out and select log back with Enlightenment session.

Option, uninstall Enlightenment 0.21.8

$ sudo apt-get remove enlightenment $ sudo apt-get autoremove

 refer original : https://howto-ubuntunew.blogspot.com/