(read-only) Bitmask of ACPI events before the acpi_ibm driver was loaded.
(read-only) Bitmask of all supported ACPI 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.
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:
Fn + F1
Fn + F2
Fn + F3 (LCD backlight)
Fn + F4 (Suspend to RAM)
Fn + F5 (Bluetooth)
Fn + F6
Fn + F7 (Screen expand)
Fn + F8
Fn + F9
Fn + F10
Fn + F11
Fn + F12 (Suspend to disk)
Fn + Backspace
Fn + Insert
Fn + Delete
Fn + Home (Brightness up)
Fn + End (Brightness down)
Fn + PageUp (ThinkLight)
Fn + PageDown
Fn + Space (Zoom)
Access IBM Button
(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:
Access IBM Button
Wireless LAN Button
Brightness Up/Down Button
Volume Up/Down/Mute Button
Current brightness level of the display.
Indicates, whether the speakers are muted or not.
Indicates, whether the ThinkLight keyboard light is activated or not.
Toggle Bluetooth chip activity.
(read-only) Indicates whether the WLAN chip is active or not.
(read-only) Indicates whether the fan is on or off.
(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).
(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:
Mini PCI Module
Defaults for these sysctls can be set in sysctl.conf(5).