cons.saver(8) [centos man page]

cons.saver(8)							   User Manuals 						     cons.saver(8)

NAME

       cons.saver - general-purpose Linux console screen save and restore server

SYNOPSIS

       cons.saver TTY

DESCRIPTION

       Invoke this helper program with the Ctrl-o key combination to save and restore the user session on the screen.

OPTIONS

       cons.saver takes only one argument, the TTY NAME from which the system  will save and restore.

SECURITY

       Cons.saver  does not need to be invoked by root.  It only needs read and write access to /dev/vcsa*, which is a priviledged operation.  You
       should create an unprivileged user, make cons.saver setuid to that user, and assure that all the vcsa* are owned by that user too.

AUTHOR

       Manpage written by Rodrigo Rubira Branco <rrbranco@br.ibm.com>

SEE ALSO

       mc(1), mcserv(8)

Linux								   May 16, 2006 						     cons.saver(8)

XSetScreenSaver()														 XSetScreenSaver()

Name
  XSetScreenSaver - set the parameters of the screen saver.

Synopsis
  XSetScreenSaver(display, timeout, interval, prefer_blanking,
	    allow_exposures)
	Display *display;
	int timeout, interval;
	int prefer_blanking;
	int allow_exposures;

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

  timeout   Specifies the time of inactivity, in seconds, before the screen saver turns on.

  interval  Specifies  the  interval,  in  seconds,  between  screen saver invocations.  This is for intermittent changes to the display, not
	    blanking.

  prefer_blanking
	    Specifies whether to enable screen blanking.  Possible values are DontPreferBlanking, PreferBlanking, or DefaultBlanking.

  allow_exposures
	    Specifies the current screen saver control values.	Possible values are DontAllowExposures, AllowExposures, or DefaultExposures.

Description
  XSetScreenSaver() sets the parameters that control the screen saver.	timeout and interval are specified in seconds.	 A  positive  timeout
  enables  the	screen	saver.	 A timeout of zero (0) disables the screen saver, while a timeout of -1 restores the default.  An interval of
  zero (0) disables the random pattern motion.	If no input from devices (keyboard, mouse, etc.) is generated for  the	specified  number  of
  timeout seconds, the screen saver is activated.

  For  each screen, if blanking is preferred and the hardware supports video blanking, the screen will simply go blank.  Otherwise, if either
  exposures are allowed or the screen can be regenerated without sending exposure events to clients, the screen is tiled with the root window
  background  tile,  with a random origin, each interval seconds.  Otherwise, the state of the screen does not change.	All screen states are
  restored at the next input from a device.

  If the server-dependent screen saver method supports periodic change, interval serves as a hint about how long the change period should be,
  and  a  value of zero (0) hints that no periodic change should be made.  Examples of ways to change the screen include scrambling the color
  map periodically, moving an icon image about the screen periodically, or tiling the screen with the root window background  tile,  randomly
  reoriginated periodically.

  For more information on the screen saver, see Volume One, Chapter 15, Other Programming Techniques.

Errors
  BadValue  timeout < -1.

See Also
  XActivateScreenSaver(), XForceScreenSaver(), XGetScreenSaver(), XResetScreenSaver().

Xlib - Screen Saver														 XSetScreenSaver()