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)
Check Out this Related Man Page
XSetScreenSaver(3X11) MIT X11R4 XSetScreenSaver(3X11)Name
XSetScreenSaver, XForceScreenSaver, XActivateScreenSaver, XResetScreenSaver, XGetScreenSaver - manipulate the screen saver
Syntax
XSetScreenSaver(display, timeout, interval, prefer_blanking, allow_exposures)
Display *display;
int timeout, interval;
int prefer_blanking;
int allow_exposures;
XForceScreenSaver(display, mode)
Display *display;
int mode;
XActivateScreenSaver(display)
Display *display;
XResetScreenSaver(display)
Display *display;
XGetScreenSaver(display, timeout_return, interval_return, prefer_blanking_return, allow_exposures_return)
Display *display;
int *timeout_return, *interval_return;
int *prefer_blanking_return;
int *allow_exposures_return;
Arguments
allow_exposures
Specifies the screen save control values. You can pass or
allow_exposures_return
Returns the current screen save control value or
display Specifies the connection to the X server.
interval Specifies the interval, in seconds, between screen saver alterations.
interval_return
Returns the interval between screen saver invocations.
mode Specifies the mode that is to be applied. You can pass or
prefer_blanking
Specifies how to enable screen blanking. You can pass or
prefer_blanking_return
Returns the current screen blanking preference or
timeout Specifies the timeout, in seconds, until the screen saver turns on.
timeout_return
Returns the timeout, in seconds, until the screen saver turns on.
Description
Timeout and interval are specified in seconds. A timeout of 0 disables the screen saver (but an activated screen saver is not deacti-
vated), and a timeout of -1 restores the default. Other negative values generate a error. If the timeout value is nonzero, enables the
screen saver. An interval of 0 disables the random-pattern motion. If no input from devices (keyboard, mouse, and so on) is generated for
the specified number of timeout seconds once the screen saver is enabled, the screen saver is activated.
For each screen, if blanking is preferred and the hardware supports video blanking, the screen simply goes blank. Otherwise, if either
exposures are allowed or the screen can be regenerated without sending events to clients, the screen is tiled with the root window back-
ground tile randomly re-origined each interval minutes. Otherwise, the screens' state do not change, and the screen saver is not acti-
vated. The screen saver is deactivated, and all screen states are restored at the next keyboard or pointer input or at the next call to
with mode
If the server-dependent screen saver method supports periodic change, the interval argument serves as a hint about how long the change
period should be, and zero hints that no periodic change should be made. Examples of ways to change the screen include scrambling the col-
ormap periodically, moving an icon image around the screen periodically, or tiling the screen with the root window background tile, ran-
domly re-origined periodically.
can generate a error.
If the specified mode is and the screen saver currently is deactivated, activates the screen saver even if the screen saver had been dis-
abled with a timeout of zero. If the specified mode is and the screen saver currently is enabled, deactivates the screen saver if it was
activated, and the activation timer is reset to its initial state (as if device input had been received).
can generate a error.
The function activates the screen saver.
The function resets the screen saver.
The function gets the current screen saver values.
Diagnostics
Some numeric value falls outside the range of values accepted by the request.
Unless a specific range is specified for an argument, the full range defined by the argument's type is accepted. Any argument
defined as a set of alternatives can generate this error.
See Also
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys
XSetScreenSaver(3X11)