ACPITOOL(1)
NAME
acpitool - a Linux ACPI client, allowing you to query or set ACPI values
SYNOPSIS
acpitool [ -aAbBcefFhjlmnosStTvVwWz ]
DESCRIPTION
acpitool is a Linux ACPI client. It simply reads /proc/acpi or
/sys/class entries and presents the output in a meaningfull, humanreadable format.
It provides a.o. information on battery status, AC adapter presence,
thermal reading, etc. This command is most useful on laptops with an
ACPI compliant BIOS and a Linux kernel, preferably from the 2.6 series,
with ACPI enabled.
Acpitool also allows the machine to be put into standby, if your laptop
supports it.
If your laptop is a Toshiba , it allows you to set the LCD brighness
level and toggle the fan on/off.
If you have an Asus laptop, it can also set the LCD brightness level,
switch the LCD panel on or off, and control the mail led and wireless
led.
If you have an IBM Thinkpad laptop, it can once again set the LCD
brightness level, and also eject the ultrabay device.
OPTIONS
- -a, --ac_adapter
- Show AC adapter presence
- -A Show supported Asus ACPI extensions (LCD brightness level, video
- out routing DSDT/acpi4asus info)
- -b Show battery status information, available batteries only.
- -B, --battery
- Show detailed battery status information, for all battery entries found.
- -c, --cpu
- Show CPU information (type, speed, PM capabilities, throttling states, c-state usage, frequency scaling).
- -e Show just about everything : more info on the batteries, ACPI
- version, kernel version, CPU, . . .
- -f, --fan
- Show fan status (shows fan info specific to Toshiba or IBM Thinkpad, if applicable).
- -F x Force the fan on (x=1) or switch back to auto mode (x=0). Works
- only on Toshiba laptops. The fan is switched off ONLY if it was forced on first, not if it was switched on automatically. Requires write access to /proc/acpi/toshiba/fan
- -h, --help
- Show help text.
- -j Eject Thinkpad ultrabay device. Requires write acces to
- /proc/acpi/ibm/bay
- -l x Set LCD brightness level to x, where x is in the range 0..7.
- Works only on Toshiba and IBM Thinkpad laptops. Requires write access to /proc/acpi/tochiba/lcd or /proc/acpi/ibm/brightness Illegal values for x will result in the value being set to either 0 or 7.
- -m x Switch the mail led on (x=1) or off (x=0). Works only on Asus
- laptops. Requires write access to /proc/acpi/asus/mled
- -n x Switch the wireless led on (x=1) or off (x=0). Works only on
- Asus laptops. Requires write access to /proc/acpi/asus/wled
- -o x Switch the LCD panel on (x=1) or off (x=0). Works only on Asus
- laptops. Requires write access to /proc/acpi/asus/lcd
- -s, --suspend to memory
- Put the machine into sleep state S3, if possible. Requires write access to /proc/acpi/sleep (kernel 2.4.x) or /sys/power/state (kernel 2.6.x)
- -S, --suspend to disk ?
- Put the machine into sleep state S4, if possible. Requires write access to /proc/acpi/sleep (kernel 2.4.x) or /sys/power/state (kernel 2.6.x)
- -t, --thermal
- Show thermal zone(s) information, including trip_points.
- -T, --Toshiba
- Show supported Toshiba ACPI extensions, currently being LCD brightness level, video out routing (what display is the video chip sending to) and fan status (on/off, forced or not).
- -v Show more verbose output when something is not found. Makes
- sense only when used together with other options.
- -V, --version
- Show acpitool version number and release date, then exit.
- -w Show the wakeup capable devices. (Available since ACPI 20040715,
- check your version).
- -W x Enable/disable wakeup capable device x. Run 'acpitool -w' to see
- valid numbers for x. Requires write access to /proc/acpi/wakeup
- -z x Set Asus LCD brightness level to x, where x is 0..15. Works only
- on Asus laptops. Requires write access to /proc/acpi/asus/brn
REMARKS
This program absolutely requires a Linux kernel with ACPI support
enabled. This program will not work without it.
IBM Thinkpad support is part of the Linux kernel since kernel 2.6.10.
Don't blame me if acpitool can't suspend your laptop : there are quite
some problematic laptops out there. Check the acpi-bugzilla list if you
don't believe me ;)
Note that some options, like -F, -l , -j, -s, -W and -z, require write
access to some of the /proc/acpi entries. This requires acpitool either
to be run as root or either administrative measures must be taken, most
likely by root, to allow ordinary users to write to these files. Creating a group for ACPI users and setting permissions accordingly comes to
mind.
Also note that older laptops (< 2000) often simply don't have ACPI support, they usually support APM only.
BUGS
Let me know if you think you found one.
FILES
/proc/acpi/...
/proc/acpi/toshiba
/proc/acpi/asus
/proc/acpi/ibm
/sys/power/state
HOMEPAGE
http://freeunix.dyndns.org:8000/site2/acpitool.shtml
AUTHOR
- This program is written and maintained by David Leemans (davidleemans
|at| scarlet |dot| be) and may be freely distributed under the terms of
the GNU General Public License. There is ABSOLUTELY NO WARRANTY for
this program.