Gentoo touchpad 驱动

$ emerge -av xf86-input-mtrack

$ gpasswd -a <user> input

Section "InputClass"
    Identifier "libinput touchpad catchall"
    MatchIsTouchpad "on"
    MatchDevicePath "/dev/input/event*"
    Option "Tapping" "True"
    Option "TappingDrag" "True"
    Option "NaturalScrolling" "False"
    Option "ScrollUpButton" "5"
    Option "ScrollDownButton" "4"
    Driver "mtrack"
    Option "TransformationMatrix" "0.4 0 0 0 0.4 0 0 0 1"
EndSection

# 这里id是14
$ xinput list | grep -i touchpad
⎜   ↳ SynPS/2 Synaptics TouchPad                id=14   [slave  pointer  (2)]

$ xinput list-props 14
Device 'SynPS/2 Synaptics TouchPad':
    # 这里可以用 Device Enabled (186) 来启用或禁用触摸板
    Device Enabled (186):   0
    Device Accel Profile (318):     0
    Device Accel Constant Deceleration (319):       1.000000
    Device Accel Adaptive Deceleration (320):       1.000000
    Device Accel Velocity Scaling (321):    10.000000
    Trackpad Disable Input (356):   0
    Trackpad Sensitivity (357):     1.000000
    Trackpad Touch Pressure (358):  5, 5
    Trackpad Button Settings (359): 1, 1
    Trackpad Button Emulation Settings (360):       0, 1, 100
    ......

$ xinput set-prop 14 186 1
$ xinput set-prop 'SynPS/2 Synaptics TouchPad' 'Device Enabled' 1

$ xinput set-prop 14 186 0
$ xinput set-prop 'SynPS/2 Synaptics TouchPad' 'Device Enabled' 0