DPMSSetTimeouts man page on aLinux

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DPMSSetTimeouts(3)		  X FUNCTIONS		    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 1.0.99.1		    DPMSSetTimeouts(3)
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