DPMSSetTimeouts(3) X FUNCTIONS DPMSSetTimeouts(3)
DPMSSetTimeouts - permits applications to set the timeout values used by the X server for
cc [ flag ... ] file ... -lXext [ library ... ]
Specifies the connection to the X server
Specifies the new standby timeout in seconds
Specifies the new suspend timeout in seconds
off Specifies the new off timeout in seconds
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 moni-
tor 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 imple-
mented 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 sus-
pend 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.
TRUE The DPMSSetTimeouts function returns TRUE when the function has succeeded.
BadValue An argument is out of range.
DPMSCapable(3), DPMSInfo(3), DPMSGetTimeouts(3)
X Version 11 libXext 1.0.5 DPMSSetTimeouts(3)