1What: /sys/devices/platform/ideapad/camera_power 2Date: Dec 2010 3KernelVersion: 2.6.37 4Contact: "Ike Panhc <ike.pan@canonical.com>" 5Description: 6 Control the power of camera module. 1 means on, 0 means off. 7 8What: /sys/devices/platform/ideapad/fan_mode 9Date: June 2012 10KernelVersion: 3.6 11Contact: "Maxim Mikityanskiy <maxtram95@gmail.com>" 12Description: 13 Change fan mode 14 There are four available modes: 15 * 0 -> Super Silent Mode 16 * 1 -> Standard Mode 17 * 2 -> Dust Cleaning 18 * 4 -> Efficient Thermal Dissipation Mode 19 20What: /sys/devices/platform/ideapad/touchpad 21Date: May 2017 22KernelVersion: 4.13 23Contact: "Ritesh Raj Sarraf <rrs@debian.org>" 24Description: 25 Control touchpad mode. 26 * 1 -> Switched On 27 * 0 -> Switched Off 28 29What: /sys/bus/pci/devices/<bdf>/<device>/VPC2004:00/fn_lock 30Date: May 2018 31KernelVersion: 4.18 32Contact: "Oleg Keri <ezhi99@gmail.com>" 33Description: 34 Control fn-lock mode. 35 * 1 -> Switched On 36 * 0 -> Switched Off 37 38 For example: 39 # echo "0" > \ 40 /sys/bus/pci/devices/0000:00:1f.0/PNP0C09:00/VPC2004:00/fn_lock 41