---
name: "acpi_rapidstart"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/acpi_rapidstart"
---

# acpi\_rapidstart(4)

Intel rapid start technology ACPI driver

## NAME

**acpi\_rapidstart** – Intel rapid start technology ACPI driver

## SYNOPSIS

To compile this driver into the kernel, place the following line in your kernel configuration file:

**device acpi\_rapidstart**

Alternatively, to load the driver as a module at boot time, place the following line in [loader.conf(5)](/loader.conf/5.md):

```
acpi_rapidstart_load="YES"
```

## DESCRIPTION

The **acpi\_rapidstart** driver provides support for Intel Rapid Start technology ACPI device interface. Note that this is only for the ACPI device interface. This has \_CID PNP0C02 so it should be loaded at boot time to avoid attaching to the acpi\_sysresource driver.

## SYSCTLS

The following [sysctl(8)](/sysctl/8.md) nodes are currently implemented:

- *dev.acpi\_rapidstart.0.ffs*

  Rapid start flag. It is a bitwise OR of the following:

  - 1

    Enter Fast Flash Standby in RTC wake.

  - 2

    Enter Fast Flash Standby in Critical Battery Wake enable

- *dev.acpi\_rapidstart.0.ftv*

  Fast Flash Standby timer value in minutes.

## SEE ALSO

[acpi(4)](/acpi/4.md), [sysctl(8)](/sysctl/8.md)

## HISTORY

The **acpi\_rapidstart** driver first appeared in FreeBSD 10.0.

## AUTHORS

The **acpi\_rapidstart** driver was written by Takanori Watanabe ⟨*takawata@FreeBSD.org*⟩.