admin-guide/laptops/thinkpad-acpi.rst

180 Hot keys
188 some important events and also keyboard hot key presses to the operating
193 The driver enables the HKEY ("hot key") event reporting automatically
200 Some of these events refer to hot key presses, but not all of them.
202 The driver will generate events over the input layer for hot keys and
205 assigned to each hot key.
207 The hot key bit mask allows some control over which hot keys generate
214 modified do anything.  Not all hot keys can be individually controlled
237 	echo 0xffffffff > /proc/acpi/ibm/hotkey -- enable all hot keys
238 	echo 0 > /proc/acpi/ibm/hotkey -- disable all possible hot keys
250 nor does it allow one to manipulate the hot key mask when the firmware
264 		Returns the hot keys mask when thinkpad-acpi was loaded.
265 		Upon module unload, the hot keys mask will be restored
278 		the firmware, ACPI event generation) for each hot key
279 		(see above).  Returns the current status of the hot keys
284 		supported hot keys, when echoed to hotkey_mask above.
292 		supported hot keys, except those which are always
298 		bit mask that selects which hot keys will the driver
303 		Hot keys whose bits are set in hotkey_source_mask are
305 		enabled in hotkey_mask.  Only a few hot keys are
319 		frequency in Hz for hot key polling. It must be between
324 		will cause hot key presses that require NVRAM polling
328 		pressings of the same hot key to be misreported as a
369 A Hot key is mapped to a single input layer EV_KEY event, possibly
398 Thinkpad-acpi Hot Key event map (version 0x4101):
410 				this hot key, even with hot keys
420 				of event, either the hot key
509 The ThinkPad firmware does not allow one to differentiate when most hot
514 hot key press or release, but the firmware will do it for either one, not
566 0x6011		ALARM: battery is too hot
567 0x6012		ALARM: battery is extremely hot
568 0x6021		ALARM: a sensor is too hot
569 0x6022		ALARM: a sensor is extremely hot
582 When any of the "too hot" alarms happen, according to Lenovo the user
588 The "extremely hot" alarms are emergencies.  According to Lenovo, the
1568 0x000200:	Hot key support for 32 hot keys, and radio slider switch
1570 0x010000:	Hot keys are now handled by default over the input
1572 		and the driver enables hot key handling by default in
1581 0x020100:	Marker for thinkpad-acpi with hot key NVRAM polling
1586 0x020101:	Marker for thinkpad-acpi with hot key NVRAM polling
1604 		and it is always able to disable hot keys.  Very old