NAME

       DPMSSetTimeouts  - permits applications to set the timeout values used by the X server for
       DPMS timings

SYNOPSIS

       cc [ flag ... ] file ... -lXext [ library ... ]
       #include <X11/extensions/dpms.h>

       Status DPMSSetTimeouts
              (
                    Display *display,
                    CARD16 standby,
                    CARD16 suspend,
                    CARD16 off
              );

ARGUMENTS

       display
              Specifies the connection to the X server

       standby
              Specifies the new standby timeout in seconds

       suspend
              Specifies the new suspend timeout in seconds

       off    Specifies the new off timeout in seconds

DESCRIPTION

       The DPMSSetTimeouts function permits applications to set the timeout values used by the  X
       server for Display Power Management Signaling (DPMS) timings.

       The  value  standby  is  the amount of inactivity time, in seconds, before standby mode is
       invoked. The actual effects of this mode are  dependent  on  the  characteristics  of  the
       monitor  and frame buffer card. Standby mode is implemented by shutting off the horizontal
       sync signal, and pulsing the vertical sync signal.  Standby  mode  provides  the  quickest
       monitor  recovery  time.   Note  also  that many monitors implement this mode identical to
       suspend mode.  A value of zero disables the standby mode.

       The value suspend is the amount of time of inactivity, in seconds, before the second level
       of  power  savings  is invoked. Suspend mode's physical and electrical characteristics are
       implementation  defined.  For  DPMS  compliant  hardware,  setting  the  suspend  mode  is
       implemented  by  pulsing  the  horizontal  sync  signal and shutting off the vertical sync
       signal.  In general, suspend mode recovery is considered to be slower than  standby  mode,
       but  faster  than  off mode. However it may vary from monitor to monitor.  As noted above,
       many monitors implement this mode identical to the standby mode.  A value of zero disables
       this mode.

       The  value off is the amount of time of inactivity, in seconds, before the third and final
       level of power savings is invoked. Off mode's physical and electrical characteristics  are
       implementation defined. In DPMS compliant hardware, it is implemented by shutting off both
       horizontal and vertical sync signals, resulting in powering down of the monitor.  Recovery
       time is implementation dependent.  Usually the recovery time is very close to the power-up
       time of the monitor. A value of zero disables this mode.

       Chronologically, standby mode occurs before  or  simultaneously  with  suspend  mode,  and
       suspend  mode must occur before or simultaneously with off mode.  Therefore, non-zero mode
       timeout values must be greater than or equal to the timeout values of earlier  modes.   If
       inconsistent values are supplied, a BadValue error will result.

RETURN VALUES

       TRUE           The DPMSSetTimeouts function returns TRUE when the function has succeeded.

ERRORS

       BadValue       An argument is out of range.

SEE ALSO

       DPMSCapable(3), DPMSInfo(3), DPMSGetTimeouts(3)