List all devices:
$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Macintosh mouse button emulation id=10 [slave pointer (2)]
⎜ ↳ Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) id=8 [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)]
↳ Power Button id=7 [slave keyboard (3)]
↳ CHICONY HP Basic USB Keyboard id=9 [slave keyboard (3)]
Find ID of mouse, in this case 8. List all settings:
$ xinput list-props 8
Device 'Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)':
Device Enabled (142): 1
Device Accel Profile (265): 0
Device Accel Constant Deceleration (266): 1.000000
Device Accel Adaptive Deceleration (268): 1.000000
Device Accel Velocity Scaling (269): 10.000000
Evdev Reopen Attempts (258): 10
Evdev Axis Inversion (270): 0, 0
Evdev Axes Swap (272): 0
Axis Labels (273): "Rel X" (150), "Rel Y" (151)
Button Labels (274): "Button Left" (143), "Button Middle" (144), "Button Right" (145), "Button Wheel Up" (146), "Button Wheel Down" (147), "Button Horiz Wheel Left" (148), "Button Horiz Wheel Right" (149)
Evdev Middle Button Emulation (275): 2
Evdev Middle Button Timeout (276): 50
Evdev Wheel Emulation (277): 0
Evdev Wheel Emulation Axes (278): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (279): 10
Evdev Wheel Emulation Timeout (280): 200
Evdev Wheel Emulation Button (281): 4
Evdev Drag Lock Buttons (282): 0
Set 'Device Accel Profile (265)' to -1:
$ xinput set-prop 8 265 -1
Adjust mouse sensitivity ('Device Accel Constant Deceleration') if needed (minimum of 1.000):
xinput set-prop 8 266 1.000