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["display manager"] > [[display_manager]] >
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http://www.cs.nott.ac.uk/TSG/images/intro_xdm.gif {{http://www.cs.nott.ac.uk/TSG/images/intro_xdm.gif}}
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another ["X"] screen is opened (i.e. Screen 1 for xdm, instead of Screen 0, that is used for xdm). You can solve definitively this problem running {{{dpkg-reconfigure xdm}}}. another [[X]] screen is opened (i.e. Screen 1 for xdm, instead of Screen 0, that is used for xdm). You can solve definitively this problem running {{{dpkg-reconfigure xdm}}}.
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 * [http://www.rru.com/~meo/pubsntalks/xrj/xdm.html  Taming The X Display Manager]
 * [http://www.linuxgazette.com/issue43/nielsen.xdm.html Configuring XDM; a graphical login interface for Linux or UNIX] (Mark Nielsen, [''Linux Gazette''] #43, July 1999)
 * [[http://www.rru.com/~meo/pubsntalks/xrj/xdm.html|Taming The X Display Manager]]
 * [[http://www.linuxgazette.com/issue43/nielsen.xdm.html|Configuring XDM; a graphical login interface for Linux or UNIX]] (Mark Nielsen, [''Linux Gazette''] #43, July 1999)

display_manager >


http://www.cs.nott.ac.uk/TSG/images/intro_xdm.gif

XDM (the X Window Display Manager) originated in ?X11R3. This version suffered from several problems, most notably when users switched X terminals off and on. In ?X11R3, XDM only knew about an X terminal from its entry in the Xservers file, but XDM only consulted this file when it started. Thus every time a user switched a terminal off and on, the system administrator had to send a SIGHUP signal to XDM to instruct it to rescan Xservers

XDM is incompatible with GDM, KDM. It you have XDM runing and type

  • gdm

another ?X screen is opened (i.e. Screen 1 for xdm, instead of Screen 0, that is used for xdm). You can solve definitively this problem running dpkg-reconfigure xdm.