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ACPI_IBM (4) | Special files and drivers | Unix Manual Pages | :man▋

system "ACPI"

subsystem "IBM"

type The source of the event in the ACPI namespace. The value depends on the model.

notify Event code (see below).

Depending on the ThinkPad model, event codes may vary. On a ThinkPad T41p these are as follows:

0x01 Fn + F1

0x02 Fn + F2

0x03 Fn + F3 (LCD backlight)

0x04 Fn + F4 (Suspend to RAM)

0x05 Fn + F5 (Bluetooth)

0x06 Fn + F6

0x07 Fn + F7 (Screen expand)

0x08 Fn + F8

0x09 Fn + F9

0x0a Fn + F10

0x0b Fn + F11

0x0c Fn + F12 (Suspend to disk)

0x0d Fn + Backspace

0x0e Fn + Insert

0x0f Fn + Delete

0x10 Fn + Home (Brightness up)

0x11 Fn + End (Brightness down)

0x12 Fn + PageUp (ThinkLight)

0x13 Fn + PageDown

0x14 Fn + Space (Zoom)

0x15 Volume Up

0x16 Volume Down

0x17 Mute

0x18 Access IBM Button

Xr led 4 Ss Interface

The acpi_ibm driver provides an led(4) interface for the Thinklight. The Thinklight can be made to blink by writing ASCII strings to the /dev/led/thinklight device.

SYSCTL VARIABLES

The following sysctls are currently implemented:

dev.acpi_ibm.0.initialmask
	(read-only) Bitmask of ACPI events before the acpi_ibm driver was loaded.
dev.acpi_ibm.0.availmask
	(read-only) Bitmask of all supported ACPI events.
dev.acpi_ibm.0.events
	Enable ACPI events and set the eventmask to availmask. Without the acpi_ibm driver being loaded, only the Fn+F4 button generates an ACPI event.
dev.acpi_ibm.0.eventmask
	Sets the ACPI events which are reported to devd(8). Fn+F3, Fn+F4 and Fn+F12 always generate ACPI events, regardless which value eventmask has. Depending on the ThinkPad model, the meaning of different bits in the eventmask may vary. On a ThinkPad T41p this is a bitwise OR of the following:

1	Fn + F1
2	Fn + F2
4	Fn + F3 (LCD backlight)
8	Fn + F4 (Suspend to RAM)
16	Fn + F5 (Bluetooth)
32	Fn + F6
64	Fn + F7 (Screen expand)
128	Fn + F8
256	Fn + F9
512	Fn + F10
1024	Fn + F11
2048	Fn + F12 (Suspend to disk)
4096	Fn + Backspace
8192	Fn + Insert
16384	Fn + Delete
32768	Fn + Home (Brightness up)
65536	Fn + End (Brightness down)
131072	Fn + PageUp (ThinkLight)
262144	Fn + PageDown
524288	Fn + Space (Zoom)
1048576	Volume Up
2097152	Volume Down
4194304	Mute
8388608	Access IBM Button

dev.acpi_ibm.0.hotkey
	(read-only) Status of several buttons. Every time a button is pressed, the respecting bit is toggled. It is a bitwise OR of the following:
1	Home Button
2	Search Button
4	Mail Button
8	Access IBM Button
16	Zoom
32	Wireless LAN Button
64	Video Button
128	Hibernate Button
256	ThinkLight Button
512	Screen Expand
1024	Brightness Up/Down Button
2048	Volume Up/Down/Mute Button

dev.acpi_ibm.0.lcd_brightness
	Current brightness level of the display.
dev.acpi_ibm.0.volume
	Speaker volume.
dev.acpi_ibm.0.mute
	Indicates, whether the speakers are muted or not.
dev.acpi_ibm.0.thinklight
	Indicates, whether the ThinkLight keyboard light is activated or not.
dev.acpi_ibm.0.bluetooth
	Toggle Bluetooth chip activity.
dev.acpi_ibm.0.wlan
	(read-only) Indicates whether the WLAN chip is active or not.
dev.acpi_ibm.0.fan
	(read-only) Indicates whether the fan is on or off.
dev.acpi_ibm.0.fan_speed
	(read-only) Fan speed in rounds per minute. A few older ThinkPads report the fan speed in levels ranging from 0 (off) to 7 (max).
dev.acpi_ibm.0.thermal
	(read-only) Shows the readings of up to eight different temperature sensors. Most ThinkPads include six or more temperature sensors but only expose the CPU temperature through acpi_thermal(4). Some ThinkPads have the below sensor layout which might vary depending on the specific model: CPU Mini PCI Module HDD GPU Built-in battery UltraBay battery Built-in battery UltraBay battery

Defaults for these sysctls can be set in sysctl.conf(5).

EXAMPLES

The following can be added to devd.conf(5) in order to pass button events to a /usr/local/sbin/acpi_oem_exec.sh script:
notify 10 {
match "system""ACPI";
match "subsystem" "IBM";
action "/usr/local/sbin/acpi_oem_exec.sh $notify ibm";
};

A possible /usr/local/sbin/acpi_oem_exec.sh script might look like:
#!/bin/sh
#
if [ "$1" = "" -o "$2" = "" ]
then
echo "usage: $0 notify oem_name"
exit 1
fi
NOTIFY=‘echo $1‘
LOGGER="logger"
CALC="bc"
BC_PRECOMMANDS="scale=2"
ECHO="echo"
CUT="cut"
MAX_LCD_BRIGHTNESS=7
MAX_VOLUME=14
OEM=$2
DISPLAY_PIPE=/tmp/acpi_${OEM}_display

case ${NOTIFY} in
0x05)
LEVEL=‘sysctl -n dev.acpi_${OEM}.0.bluetooth‘
if [ "$LEVEL" = "1" ]
then
sysctl dev.acpi_${OEM}.0.bluetooth=0
MESSAGE="bluetooth disabled"
else
sysctl dev.acpi_${OEM}.0.bluetooth=1
MESSAGE="bluetooth enabled"
fi
0x10|0x11)
LEVEL=‘sysctl -n dev.acpi_${OEM}.0.lcd_brightness‘
PERCENT=‘${ECHO} "${BC_PRECOMMANDS} ; \
${LEVEL} / ${MAX_LCD_BRIGHTNESS} * 100" |\
${CALC} | ${CUT} -d . -f 1‘
MESSAGE="brightness level ${PERCENT}%"
;;
0x12)
LEVEL=‘sysctl -n dev.acpi_${OEM}.0.thinklight‘
if [ "$LEVEL" = "1" ]
then
MESSAGE="thinklight enabled"
else
MESSAGE="thinklight disabled"
fi
;;
0x15|0x16)
LEVEL=‘sysctl -n dev.acpi_${OEM}.0.volume‘
PERCENT=‘${ECHO} "${BC_PRECOMMANDS} ; \
${LEVEL} / ${MAX_VOLUME} * 100" | \
${CALC} | ${CUT} -d . -f 1‘
MESSAGE="volume level ${PERCENT}%"
;;
0x17)
LEVEL=‘sysctl -n dev.acpi_${OEM}.0.mute‘
if [ "$LEVEL" = "1" ]
then
MESSAGE="volume muted"
else
MESSAGE="volume unmuted"
fi
;;
*)
;;
esac
${LOGGER} ${MESSAGE}
if [ -p ${DISPLAY_PIPE} ]
then
${ECHO} ${MESSAGE} >> ${DISPLAY_PIPE} &
fi
exit 0

FILES

/dev/led/thinklight Thinklight led(4) device node

HISTORY

AUTHORS

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