NAME
acpicall —
call ACPI methods
SYNOPSIS
acpicall |
[-v] [-b
hexstring] [-d
file] [-i
number] [-o
i | s |
b | o]
[-s string]
[-U uuid]
path |
DESCRIPTION
Theacpicall utility calls the ACPI method
path with the arguments specified by any
-b, -i,
-o, -s, and
-U options. The path argument
must be a full ACPI namespace path such as
\_SB.PCI0.PEGR.GFX0._DSM.
Note that in order to be able to use the
acpicall utility, the
debug.acpi.allow_method_calls loader tunable must be
specified in /boot/loader.conf.
The following options are supported:
-bhexstring- Pass hexstring as a buffer argument.
-dfile- Specify the path of the ACPI control device. The default is /dev/acpi.
-inumber- Pass number as an integer argument.
-oi | s | b | o- Choose the format to print the result in: (i)nteger, (s)tring, (b)uffer, or (o)bject.
-sstring- Pass string as a string argument.
-Uuuid- Pass uuid as a buffer argument.
-v- Increase verbosity.
EXAMPLES
Note that many ACPI methods are specific to the BIOS and machine in question, so it is impossible to present any generic examples that will work everywhere. Some familiarity with ASL and the DSDT code of the specific machine to be tweaked is highly recommended.
The following calls were successfully used to turn off the discrete NVIDIA GPU on the Optimus based Asus K53SV laptop:
acpicall -U a486d8f8-0bda-471b-a72b-6042a6b5bee0 \
-i 256 -i 26 -b 01000003 "\_SB.PCI0.PEGR.GFX0._DSM"
acpicall "\_SB.PCI0.PEGR.GFX0._PS3"
SEE ALSO
acpi(4), acpibin(8), acpiconf(8), acpidump(8), acpiexec(8), acpihelp(8), acpinames(8), acpixtract(8), iasl(8)
AUTHORS
acpicall is based on the
acpi_call utility by Maxim
Ignatenko
<gelraen.ua@gmail.com>.
This manual page was written by
Sascha Wildner.