admin-guide/laptops/thinkpad-acpi.rst

89 The procfs interface creates the /proc/acpi/ibm directory.  There is a
139 procfs: /proc/acpi/ibm/driver
185 procfs: /proc/acpi/ibm/hotkey
237 The following commands can be written to the /proc/acpi/ibm/hotkey file::
239 	echo 0xffffffff > /proc/acpi/ibm/hotkey -- enable all hot keys
240 	echo 0 > /proc/acpi/ibm/hotkey -- disable all possible hot keys
242 	echo reset > /proc/acpi/ibm/hotkey -- restore the recommended mask
247 	echo enable > /proc/acpi/ibm/hotkey -- does nothing
248 	echo disable > /proc/acpi/ibm/hotkey -- returns an error
613 procfs: /proc/acpi/ibm/bluetooth
630 	echo enable > /proc/acpi/ibm/bluetooth
631 	echo disable > /proc/acpi/ibm/bluetooth
653 Video output control -- /proc/acpi/ibm/video
659 	echo lcd_enable > /proc/acpi/ibm/video
660 	echo lcd_disable > /proc/acpi/ibm/video
661 	echo crt_enable > /proc/acpi/ibm/video
662 	echo crt_disable > /proc/acpi/ibm/video
663 	echo dvi_enable > /proc/acpi/ibm/video
664 	echo dvi_disable > /proc/acpi/ibm/video
665 	echo auto_enable > /proc/acpi/ibm/video
666 	echo auto_disable > /proc/acpi/ibm/video
667 	echo expand_toggle > /proc/acpi/ibm/video
668 	echo video_switch > /proc/acpi/ibm/video
676 Reading /proc/acpi/ibm/video shows the status of each device.
705 procfs: /proc/acpi/ibm/light
716 	echo on  > /proc/acpi/ibm/light
717 	echo off > /proc/acpi/ibm/light
734 procfs: /proc/acpi/ibm/cmos
771 procfs: /proc/acpi/ibm/led
798 	echo '<LED number> on' >/proc/acpi/ibm/led
799 	echo '<LED number> off' >/proc/acpi/ibm/led
800 	echo '<LED number> blink' >/proc/acpi/ibm/led
855 ACPI sounds -- /proc/acpi/ibm/beep
864 	echo <number> >/proc/acpi/ibm/beep
888 procfs: /proc/acpi/ibm/thermal
1000 procfs: /proc/acpi/ibm/brightness
1051 	echo up   >/proc/acpi/ibm/brightness
1052 	echo down >/proc/acpi/ibm/brightness
1053 	echo 'level <level>' >/proc/acpi/ibm/brightness
1100 procfs: /proc/acpi/ibm/volume
1166 	echo up   >/proc/acpi/ibm/volume
1167 	echo down >/proc/acpi/ibm/volume
1168 	echo mute >/proc/acpi/ibm/volume
1169 	echo unmute >/proc/acpi/ibm/volume
1170 	echo 'level <level>' >/proc/acpi/ibm/volume
1202 procfs: /proc/acpi/ibm/fan
1283 	echo enable  >/proc/acpi/ibm/fan
1284 	echo disable >/proc/acpi/ibm/fan
1291 	echo 'level <level>' > /proc/acpi/ibm/fan
1303 	echo 'speed <speed>' > /proc/acpi/ibm/fan
1313 	echo 'watchdog <interval in seconds>' > /proc/acpi/ibm/fan
1374 procfs: /proc/acpi/ibm/wan
1394 	echo enable > /proc/acpi/ibm/wan
1395 	echo disable > /proc/acpi/ibm/wan
1419 procfs: /proc/acpi/ibm/lcdshadow
1431 	echo '0' >/proc/acpi/ibm/lcdshadow
1432 	echo '1' >/proc/acpi/ibm/lcdshadow
1553 Multiple commands can be written to the proc files in one shot by
1556 	echo enable,0xffff > /proc/acpi/ibm/hotkey
1557 	echo lcd_disable,crt_enable > /proc/acpi/ibm/video