I have a Lenovo ThinkPad Yoga which is equipped with a clickpad. I want to enable scrolling using the middle clickpad button. So, I want to be able to scroll in, say, an editor by pressing and holding the middle button and then moving the mouse in the direction in which to scroll. I have set up this clickpad such that the three soft buttons corresponding to mouse buttons 1, 2 and 3 are recognised. The synaptics configuration is as follows:
Section "InputClass"
Identifier "Default clickpad buttons"
MatchDriver "synaptics"
Option "SoftButtonAreas" "64% 0 1 42% 36% 64% 1 42%"
Option "AreaBottomEdge" "1"
EndSection
The xinput device listing (xinput --list) is as follows:
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ELAN Touchscreen id=9 [slave pointer (2)]
⎜ ↳ Wacom ISDv4 EC Pen stylus id=11 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=13 [slave pointer (2)]
⎜ ↳ Wacom ISDv4 EC Pen eraser id=15 [slave pointer (2)]
⎜ ↳ TPPS/2 IBM TrackPoint id=16 [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)]
↳ Integrated Camera id=10 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
↳ ThinkPad Extra Buttons id=14 [slave keyboard (3)]
The xinput properties listing for the pointing stick device (xinput --list-props "TPPS/2 IBM TrackPoint") is as follows:
Device 'TPPS/2 IBM TrackPoint':
Device Enabled (134): 1
Coordinate Transformation Matrix (136): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (262): 0
Device Accel Constant Deceleration (263): 1.000000
Device Accel Adaptive Deceleration (264): 1.000000
Device Accel Velocity Scaling (265): 10.000000
Device Product ID (251): 2, 10
Device Node (252): "/dev/input/event15"
Evdev Axis Inversion (266): 0, 0
Evdev Axes Swap (268): 0
Axis Labels (269): "Rel X" (144), "Rel Y" (145)
Button Labels (270): "Button Left" (137), "Button Middle" (138), "Button Right" (139), "Button Wheel Up" (140), "Button Wheel Down" (141), "Button Horiz Wheel Left" (142), "Button Horiz Wheel Right" (143)
Evdev Middle Button Emulation (271): 0
Evdev Middle Button Timeout (272): 50
Evdev Third Button Emulation (273): 0
Evdev Third Button Emulation Timeout (274): 1000
Evdev Third Button Emulation Button (275): 3
Evdev Third Button Emulation Threshold (276): 20
Evdev Wheel Emulation (277): 1
Evdev Wheel Emulation Axes (278): 6, 7, 4, 5
Evdev Wheel Emulation Inertia (279): 10
Evdev Wheel Emulation Timeout (280): 200
Evdev Wheel Emulation Button (281): 2
Evdev Drag Lock Buttons (282): 0
The xinput properties listing for the clickpad device (xinput --list-props "SynPS/2 Synaptics TouchPad") is as follows:
Device 'SynPS/2 Synaptics TouchPad':
Device Enabled (134): 1
Coordinate Transformation Matrix (136): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (262): 1
Device Accel Constant Deceleration (263): 2.500000
Device Accel Adaptive Deceleration (264): 1.000000
Device Accel Velocity Scaling (265): 12.500000
Synaptics Edges (308): 1768, 5414, 1638, 4466
Synaptics Finger (309): 25, 30, 0
Synaptics Tap Time (310): 180
Synaptics Tap Move (311): 235
Synaptics Tap Durations (312): 180, 180, 100
Synaptics ClickPad (313): 1
Synaptics Middle Button Timeout (314): 0
Synaptics Two-Finger Pressure (315): 282
Synaptics Two-Finger Width (316): 7
Synaptics Scrolling Distance (317): 107, 107
Synaptics Edge Scrolling (318): 0, 0, 0
Synaptics Two-Finger Scrolling (319): 1, 1
Synaptics Move Speed (320): 1.000000, 1.750000, 0.037293, 0.000000
Synaptics Off (321): 0
Synaptics Locked Drags (322): 0
Synaptics Locked Drags Timeout (323): 5000
Synaptics Tap Action (324): 2, 3, 0, 0, 1, 3, 0
Synaptics Click Action (325): 1, 3, 0
Synaptics Circular Scrolling (326): 0
Synaptics Circular Scrolling Distance (327): 0.100000
Synaptics Circular Scrolling Trigger (328): 0
Synaptics Palm Detection (329): 0
Synaptics Palm Dimensions (330): 10, 200
Synaptics Coasting Speed (331): 20.000000, 50.000000
Synaptics Pressure Motion (332): 30, 160
Synaptics Pressure Motion Factor (333): 1.000000, 1.000000
Synaptics Resolution Detect (334): 1
Synaptics Grab Event Device (335): 1
Synaptics Gestures (336): 1
Synaptics Capabilities (337): 1, 0, 0, 1, 1, 1, 1
Synaptics Pad Resolution (338): 55, 53
Synaptics Area (339): 0, 0, 0, 1
Synaptics Soft Button Areas (340): 4184, 0, 1, 2788, 2997, 4184, 1, 2788
Synaptics Noise Cancellation (341): 8, 8
Device Product ID (251): 2, 7
Device Node (252): "/dev/input/event10"
Sample xev
output for the button usage is as follows:
ButtonPress event, serial 40, synthetic NO, window 0x5200001,
root 0x9e, subw 0x0, time 17803214, (103,77), root:(1845,126),
state 0x0, button 2, same_screen YES
ButtonRelease event, serial 40, synthetic NO, window 0x5200001,
root 0x9e, subw 0x0, time 17803294, (103,77), root:(1845,126),
state 0x200, button 2, same_screen YES
I would appreciate any guidance you might have on enabling the middle button scrolling. Thanks!
EDIT: I've acquired an external ThinkPad USB keyboard that features both a TrackPoint pointing stick and three dedicated mouse buttons. I have performed the scroll up and scroll down operations successfully using this keyboard and have recorded the relevant xev
output.
The following is the xev
output for the successful scroll up operation:
ButtonPress event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x4c00002, time 53834970, (55,63), root:(1797,1083),
state 0x0, button 5, same_screen YES
EnterNotify event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x0, time 53834946, (55,63), root:(1797,1083),
mode NotifyGrab, detail NotifyInferior, same_screen YES,
focus YES, state 4096
KeymapNotify event, serial 40, synthetic NO, window 0x0,
keys: 4294967198 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ButtonRelease event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x4c00002, time 53834970, (55,63), root:(1797,1083),
state 0x1000, button 5, same_screen YES
LeaveNotify event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x0, time 53834946, (55,63), root:(1797,1083),
mode NotifyUngrab, detail NotifyInferior, same_screen YES,
focus YES, state 0
The following is the xev
output for the successful scroll down operation:
ButtonPress event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x4c00002, time 53829778, (55,63), root:(1797,1083),
state 0x0, button 5, same_screen YES
EnterNotify event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x0, time 53829754, (55,63), root:(1797,1083),
mode NotifyGrab, detail NotifyInferior, same_screen YES,
focus YES, state 4096
KeymapNotify event, serial 40, synthetic NO, window 0x0,
keys: 4294967198 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ButtonRelease event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x4c00002, time 53829778, (55,63), root:(1797,1083),
state 0x1000, button 5, same_screen YES
LeaveNotify event, serial 40, synthetic NO, window 0x4c00001,
root 0x9e, subw 0x0, time 53829754, (55,63), root:(1797,1083),
mode NotifyUngrab, detail NotifyInferior, same_screen YES,
focus YES, state 0
So, with this additional information, would any of you kind, clever people have any guidance on how to instate this type of scrolling on my little ThinkPad? :)