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+
+% Registration The New X Input System
+%
+% [2]Register/Submit Proposal James Gettys (jim.gettys@hp.com)
+%
+% Content A New X Window System Input System
+
+The X Window System, for historical reasons,
+has presumed a static configuration of screens
+and input devices such as keyboards, mice,
+joysticks, etc, configured by a file (the
+dread \texttt{xorg.conf} or \texttt{XF86Config} file), under
+control of a single individual.
+
+But USB input devices are now hot-pluggable,
+and users justifiably expect that they should
+be able to plug them into a running system and
+have them ``just work,'' without requiring
+rebooting the Linux/UNIX kernel or restarting
+the X server, having laboriously hand-edited
+an X server configuration file. Instead, the X
+server must move to a model where it is told
+what to do by external agents, and do so in a
+dynamic fashion, in response to a user's
+action.
+
+Additonally, projectors and other large
+displays, calling out to be used by more than
+one person at a time, are becoming
+econonomical. Input devices themselves must be
+able to be network devices, and the X server
+become a multi-user server, if this vision is
+to become a reality.
+
+The issues faced break down into the following
+categories:
+\begin{itemize}
+ \item fundamental X architectural issues
+ \item XInput extension protocol issues
+ \item Integration with the desktop environment
+ \item X server implementation infrastructure issues
+ \item Security and authentication
+ \item Device discovery, authentication and association
+\end{itemize}
+
+Hotplug of display screens present similar
+challenges, but such hardware is either rare
+(PCMCIA/CARDBUS displays) or not yet widely
+deployed (e.g.\ PCI-e), it is out of the scope
+of this paper.
+
personal git repositories of Harald Welte. Your mileage may vary