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(OLF 2017) Lumina Rising: Challenging Desktop Orthodoxy

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The foundations of version 2.x of the Lumina desktop.

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(OLF 2017) Lumina Rising: Challenging Desktop Orthodoxy

  1. 1. Lumina Rising:Lumina Rising: Challenging Desktop OrthodoxyChallenging Desktop Orthodoxy Ken Moore <ken@ixsystems.com> Ohio Linux Fest Columbus, OH September 29-30
  2. 2. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 2/17 Key QuestionsKey Questions ● What is a desktop? ● How is a desktop assembled? ● How does a desktop integrate with the operating system? ● How is Lumina 2 any different?
  3. 3. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 3/17 What is a desktop?What is a desktop? Common Answers:Common Answers: ● A complete graphical system with a collection of various utilities for common tasks. Examples: KDE, GNOME, and XFCE. ● An interface with application shortcuts and manages graphical windows. Examples: Plasma, Lumina, and WM + dock. ● Only the window manager.
  4. 4. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 4/17 What is a desktop?What is a desktop? Proposed Answer:Proposed Answer: ● A graphical interface to an operating system which supports industry standards for application interactions and controls. ● Examples: ● Window Management: ICCCM and EWMH ● Application Registration: XDG desktop menu and entry specs ● Theming Specs: Icons, cursors, and color schemes (debatable)
  5. 5. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 5/17 How is a desktop assembled?How is a desktop assembled? ● As time passes, the base desktop grows: Package Manager WM PanelsX11 Wallpaper + Icons Screensaver Screen Lock Clipboard Keychain Session Manager Application Launcher File Manager Service Manager Device Manager Network Manager File Sharing
  6. 6. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 6/17 How is a desktop assembled?How is a desktop assembled? ● As time passes, the base desktop grows: Package Manager WM PanelsX11 Wallpaper + Icons Screensaver Screen Lock Clipboard Keychain Session Manager Application Launcher File Manager Service Manager Device Manager Network Manager File Sharing Desktop Session Application Interfaces Operating System Control
  7. 7. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 7/17 How is a desktop assembled?How is a desktop assembled? ● As time passes, the base desktop grows: Package Manager WM PanelsX11 Wallpaper + Icons Screensaver Screen Lock Clipboard Keychain Session Manager Application Launcher File Manager Service Manager Device Manager Network Manager File Sharing Desktop Session Application Interfaces Operating System Control Where is the operating system? When does the desktop become the OS?
  8. 8. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 8/17 How does a desktop integrate withHow does a desktop integrate with the operating system?the operating system? ● The OS provides a “system console” ● Keyboard Only ● Users/Groups ● Networking ● Services ● Filesystems ● Shells ● Hardware drivers ● Standard C libraries ● The desktop provides a “graphical console” ● Keyboard optional ● Multi-user ● Multi-application ● Visualization of the OS ● X11/Wayland libraries
  9. 9. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 9/17 How does a desktop tie into theHow does a desktop tie into the operating system?operating system? ● Recent trends in OS “intrusion” by desktops ● Filesystem interference: GVFS and inotify ● Bypass user restrictions: policykit and dbus ● Bypass removable device management: hald, automount, and autorun ● Bypass shared network protocols using alternate libraries, tools, or versions ● Bypass hardware management: upower ● Desktops try to enforce standardized OS interactions, but fail. Desktops need an API!
  10. 10. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 10/17 How is Lumina Different?How is Lumina Different? ● Other desktops ● KDE/Plasma, GNOME and derivatives ● The “all-in-one” approach ● Lots of dependencies ● XFCE, LXQT, and Lumina 1 ● More modular and independent from applications ● Primarily just the “interface” ● Still require several runtime processes ● Lumina 2 ● Interface only ● No OS services required, modular OS interaction framework ● Requires Qt5/X11 libraries only ● Completely independent from applications What is the desktop?
  11. 11. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 11/17 How is Lumina Different?How is Lumina Different? What is the desktop?
  12. 12. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 12/17 How is Lumina Different?How is Lumina Different? ● Other desktops ● Lots of binaries/processes ● Uses dbus as IPC “glue” ● Moving toward “Apps-as- services” ● Highly fragmented core, desktop-dependent extra applications ● Lumina 2 ● One binary/process ● Formalized JSON API ● Transient applications ● Unified core, independent extra applications How is the desktop assembled?
  13. 13. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 13/17 How is Lumina Different?How is Lumina Different? How is the desktop assembled?
  14. 14. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 14/17 How is Lumina Different?How is Lumina Different? ● Other desktops ● Linux-centric. Backend services/tools must be ported to a non-Linux OS first. ● Attempt to “control” OS capabilities. The desktop is dominant. ● Provide a multitude of utilities for OS tasks ● Lumina 2 is: ● OS-agnostic. Optional internal mapping for OS interactions. ● An “interface” for any OS capabilities. The OS is dominant. ● Minimal. OS control utilities are installed by the OS. Desktop and OS Interactions
  15. 15. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 15/17 How is Lumina Different?How is Lumina Different? Desktop and OS Interactions
  16. 16. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 16/17 ConclusionsConclusions ● Open-source desktop developers are at a crossroads. Do we follow the example of Windows and become a central component of a single operating system? Or, do we create and use operating standards for desktop/OS interaction? ● The Lumina project is forging ahead with goals of portability, simplicity, and standardization.
  17. 17. September 29-30, 2017 Lumina Rising: Challenging Desktop Orthodoxy Page 17/17 Questions? Slides Available at: https://www.slideshare.net/beanpole135

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