Comment 0 for bug 1791921

Hello,
I installed Ubuntu 16.04 LTS on Lenovo Thinkpad Carbon-6th, Kernal information could be find here [0]. Soon after the installation the touchpad is not working at all, it just randomly move here and there sometime, else nothing.

More information
1. I could find the tocupad-device present in 'cat /proc/bus/input/devices' [1]
2. xinput is given here [2]
3. 'xinput --list-props 12' output is here [3], I tried to change the values but no success unfortunately.

4. I found this wiki (https://wiki.ubuntu.com/DebuggingTouchpadDetection#In_case_your_Touchpad_doesn.27t_work_at_all_.28No_response_from_the_Touchpad.29) and ended up reporting this bug.

5. One last piece of information, somehow I managed to have my touchpad worked absolutely fine during my previous attempt of Ubuntu 16.04 installation this morning.
The only parameters I changed was
xinput set-prop 12 302 1 1 1
xinput set-prop 12 293 40 40 0

I had to discard that installation as there was issue in sudo apt-get update, it failed to get the package, which seem to be linked with the wifi issue. So I connected to proper wifi and tried fresh installation and ended up loosing my stable touchpad.

I would really appreciate any help in fixing this problem. Many thanks for your time!

Best Regards
Pooja

[0]
******
pooja@X1-Carbon-6:~$ uname -a
Linux X1-Carbon-6 4.15.0-34-generic #37~16.04.1-Ubuntu SMP Tue Aug 28 10:44:06 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[1]
*******
I: Bus=0011 Vendor=0002 Product=0007 Version=01a1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input5
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=5
B: EV=b
B: KEY=e520 10000 0 0 0 0
B: ABS=660800011000003

[2]
*******
pooja@X1-Carbon-6:~$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech Optical USB Mouse id=9 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=12 [slave pointer (2)]
⎜ ↳ PS/2 Generic Mouse id=14 [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)]
    ↳ Sleep Button id=8 [slave keyboard (3)]
    ↳ Integrated Camera: Integrated C id=10 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
    ↳ ThinkPad Extra Buttons id=13 [slave keyboard (3)]

[3]
************
pooja@X1-Carbon-6:~$ xinput --list-props 12
Device 'SynPS/2 Synaptics TouchPad':
 Device Enabled (143): 1
 Coordinate Transformation Matrix (145): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
 Device Accel Profile (266): 0
 Device Accel Constant Deceleration (267): 2.500000
 Device Accel Adaptive Deceleration (268): 1.000000
 Device Accel Velocity Scaling (269): 12.500000
 Synaptics Edges (292): 1574, 5370, 1350, 4502
 Synaptics Finger (293): 40, 40, 0
 Synaptics Tap Time (294): 180
 Synaptics Tap Move (295): 252
 Synaptics Tap Durations (296): 180, 180, 100
 Synaptics ClickPad (297): 0
 Synaptics Middle Button Timeout (298): 75
 Synaptics Two-Finger Pressure (299): 4
 Synaptics Two-Finger Width (300): 9
 Synaptics Scrolling Distance (301): 104, 104
 Synaptics Edge Scrolling (302): 1, 1, 1
 Synaptics Two-Finger Scrolling (303): 1, 0
 Synaptics Move Speed (304): 1.000000, 1.750000, 0.034874, 0.000000
 Synaptics Off (305): 2
 Synaptics Locked Drags (306): 0
 Synaptics Locked Drags Timeout (307): 5000
 Synaptics Tap Action (308): 0, 0, 0, 0, 1, 2, 3
 Synaptics Click Action (309): 1, 3, 0
 Synaptics Circular Scrolling (310): 1
 Synaptics Circular Scrolling Distance (311): 0.100000
 Synaptics Circular Scrolling Trigger (312): 3
 Synaptics Circular Pad (313): 0
 Synaptics Palm Detection (314): 0
 Synaptics Palm Dimensions (315): 10, 200
 Synaptics Coasting Speed (316): 20.000000, 50.000000
 Synaptics Pressure Motion (317): 30, 160
 Synaptics Pressure Motion Factor (318): 1.000000, 1.000000
 Synaptics Resolution Detect (319): 1
 Synaptics Grab Event Device (320): 0
 Synaptics Gestures (321): 1
 Synaptics Capabilities (322): 1, 0, 0, 1, 1, 1, 1
 Synaptics Pad Resolution (323): 1, 1
 Synaptics Area (324): 0, 0, 0, 0
 Synaptics Noise Cancellation (326): 28, 28
 Device Product ID (261): 2, 7
 Device Node (262): "/dev/input/event5"
 Synaptics Jumpy Cursor Threshold (588): 250