我已50-synaptics.conf按照此线程所述更改了文件中的设置：
改变触摸板水平和垂直加速度/灵敏度？
我已经添加了：
Option "VertResolution" "75"
Option "HorizResolution" "75"
尝试了不同的数字，但这似乎对我没有任何改变。也许它没有使用 synaptics 驱动程序？使用联想 U31-70 和 16.04 LTS
编辑：按要求输出xinput：
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ AlpsPS/2 ALPS GlidePoint id=12 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Lenovo EasyCamera id=9 [slave keyboard (3)]
↳ Ideapad extra buttons id=10 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
编辑2：输出xinput list-props 12：
Device 'AlpsPS/2 ALPS GlidePoint':
Device Enabled (140): 1
Coordinate Transformation Matrix (142): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (266): 1
Device Accel Constant Deceleration (267): 2.500000
Device Accel Adaptive Deceleration (268): 1.000000
Device Accel Velocity Scaling (269): 12.500000
Synaptics Edges (270): 614, 3481, 307, 1740
Synaptics Finger (271): 25, 30, 0
Synaptics Tap Time (272): 180
Synaptics Tap Move (273): 201
Synaptics Tap Durations (274): 180, 100, 100
Synaptics ClickPad (275): 1
Synaptics Middle Button Timeout (276): 0
Synaptics Two-Finger Pressure (277): 282
Synaptics Two-Finger Width (278): 7
Synaptics Scrolling Distance (279): -91, -91
Synaptics Edge Scrolling (280): 0, 0, 0
Synaptics Two-Finger Scrolling (281): 1, 1
Synaptics Move Speed (282): 1.000000, 1.750000, 0.043687, 0.000000
Synaptics Off (283): 2
Synaptics Locked Drags (284): 0
Synaptics Locked Drags Timeout (285): 5000
Synaptics Tap Action (286): 2, 3, 0, 0, 1, 3, 0
Synaptics Click Action (287): 1, 3, 0
Synaptics Circular Scrolling (288): 0
Synaptics Circular Scrolling Distance (289): 0.100000
Synaptics Circular Scrolling Trigger (290): 0
Synaptics Circular Pad (291): 0
Synaptics Palm Detection (292): 0
Synaptics Palm Dimensions (293): 10, 200
Synaptics Coasting Speed (294): 20.000000, 50.000000
Synaptics Pressure Motion (295): 30, 160
Synaptics Pressure Motion Factor (296): 1.000000, 1.000000
Synaptics Resolution Detect (297): 1
Synaptics Grab Event Device (298): 0
Synaptics Gestures (299): 1
Synaptics Capabilities (300): 1, 0, 0, 1, 1, 0, 0
Synaptics Pad Resolution (301): 1, 2
Synaptics Area (302): 0, 0, 0, 0
Synaptics Soft Button Areas (303): 2047, 0, 1678, 0, 0, 0, 0, 0
Synaptics Noise Cancellation (304): 22, 22
Device Product ID (261): 2, 8
Device Node (262): "/dev/input/event5"