Just bought a Logitech M705 in a combo with a K520 keyboard. In Ubuntu
16.04 the middle button is not activated and not working. I've a stock
Ubuntu 16.04 with all recent updates. I'm using Unity.

Output:

xinput --list-props 8
Device 'Logitech M705':
        Device Enabled (153):   1
        Coordinate Transformation Matrix (155): 1.000000, 0.000000, 0.000000, 
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
        Device Accel Profile (283):     0
        Device Accel Constant Deceleration (284):       1.000000
        Device Accel Adaptive Deceleration (285):       1.000000
        Device Accel Velocity Scaling (286):    10.000000
        Device Product ID (272):        1133, 4123
        Device Node (273):      "/dev/input/event3"
        Evdev Axis Inversion (287):     0, 0
        Evdev Axes Swap (289):  0
        Axis Labels (290):      "Rel X" (163), "Rel Y" (164), "Rel Horiz Wheel" 
(281), "Rel Vert Wheel" (282)
        Button Labels (291):    "Button Left" (156), "Button Middle" (157), 
"Button Right" (158), "Button Wheel Up" (159), "Button Wheel Down" (160), 
"Button Horiz Wheel Left" (161), "Button Horiz Wheel Right" (162), "Button 
Side" (276), "Button Extra" (277), "Button Forward" (278), "Button Back" (279), 
"Button Task" (280), "Button Unknown" (275), "Button Unknown" (275), "Button 
Unknown" (275), "Button Unknown" (275), "Button Unknown" (275), "Button 
Unknown" (275), "Button Unknown" (275), "Button Unknown" (275), "Button 
Unknown" (275), "Button Unknown" (275), "Button Unknown" (275), "Button 
Unknown" (275)
        Evdev Scrolling Distance (292): 1, 1, 1
        Evdev Middle Button Emulation (293):    0
        Evdev Middle Button Timeout (294):      50
        Evdev Third Button Emulation (295):     0
        Evdev Third Button Emulation Timeout (296):     1000
        Evdev Third Button Emulation Button (297):      3
        Evdev Third Button Emulation Threshold (298):   20
        Evdev Wheel Emulation (299):    0
        Evdev Wheel Emulation Axes (300):       0, 0, 4, 5
        Evdev Wheel Emulation Inertia (301):    10
        Evdev Wheel Emulation Timeout (302):    200
        Evdev Wheel Emulation Button (303):     4
        Evdev Drag Lock Buttons (304):  0

Even if I enable "Evdev Middle Button Emulation", "Evdev Third Button
Emulation" and "Evdev Wheel Emulation" it will not work. I hope that
some will come with a solution.

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https://bugs.launchpad.net/bugs/1581088

Title:
  Middle mouse (wheel-click) button stopped working after upgrade to
  16.04

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