DPMSSetTimeouts(3)

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 phys-
       ical 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 dis-
       ables this mode.

       Chronologically, standby mode occurs before or simultaneously with sus-
       pend  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 val-
       ues are supplied, a BadValue error will result.

RETURN VALUES

       TRUE           The DPMSSetTimeouts function returns TRUE when the func-
                      tion has succeeded.

ERRORS

       BadValue       An argument is out of range.

SEE ALSO

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

X Version 11                     libXext 1.0.3              DPMSSetTimeouts(3)