I have had this problem since Ubuntu 16.04. The palm detection simply does not work.
I tried running commands mentioned in this article but to no effect.Output of
xinput:⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ DLLC6B2:00 06CB:75BF Touchpad id=11 [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)] ↳ Sleep Button id=9 [slave keyboard (3)] ↳ Integrated_Webcam_HD id=10 [slave keyboard (3)] ↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)] ↳ Dell WMI hotkeys id=14 [slave keyboard (3)] ↳ DELL Wireless hotkeys id=15 [slave keyboard (3)]Output of `xinput list-props 11:
Device 'DLLC6B2:00 06CB:75BF Touchpad': 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 (267): 1 Device Accel Constant Deceleration (268): 2.500000 Device Accel Adaptive Deceleration (269): 1.000000 Device Accel Velocity Scaling (270): 12.500000 Synaptics Edges (271): 49, 1180, 50, 879 Synaptics Finger (272): 25, 30, 0 Synaptics Tap Time (273): 180 Synaptics Tap Move (274): 67 Synaptics Tap Durations (275): 180, 180, 100 Synaptics ClickPad (276): 1 Synaptics Middle Button Timeout (277): 0 Synaptics Two-Finger Pressure (278): 282 Synaptics Two-Finger Width (279): 7 Synaptics Scrolling Distance (280): -30, -30 Synaptics Edge Scrolling (281): 0, 0, 0 Synaptics Two-Finger Scrolling (282): 1, 1 Synaptics Move Speed (283): 1.000000, 1.750000, 0.129870, 0.000000 Synaptics Off (284): 0 Synaptics Locked Drags (285): 0 Synaptics Locked Drags Timeout (286): 5000 Synaptics Tap Action (287): 2, 3, 0, 0, 1, 3, 0 Synaptics Click Action (288): 1, 3, 0 Synaptics Circular Scrolling (289): 0 Synaptics Circular Scrolling Distance (290): 0.100000 Synaptics Circular Scrolling Trigger (291): 0 Synaptics Circular Pad (292): 0 Synaptics Palm Detection (293): 1 Synaptics Palm Dimensions (294): 5, 5 Synaptics Coasting Speed (295): 20.000000, 50.000000 Synaptics Pressure Motion (296): 30, 160 Synaptics Pressure Motion Factor (297): 1.000000, 1.000000 Synaptics Resolution Detect (298): 1 Synaptics Grab Event Device (299): 0 Synaptics Gestures (300): 1 Synaptics Capabilities (301): 1, 0, 0, 1, 1, 0, 0 Synaptics Pad Resolution (302): 12, 12 Synaptics Area (303): 0, 0, 0, 0 Synaptics Soft Button Areas (304): 614, 0, 761, 0, 0, 0, 0, 0 Synaptics Noise Cancellation (305): 7, 7 Device Product ID (264): 1739, 30143 Device Node (263): "/dev/input/event10"Contents of
/usr/share/X11/xorg.conf.d/40-libinput.conf:# Match on all types of devices but tablet devices and joysticks Section "InputClass" Identifier "libinput pointer catchall" MatchIsPointer "on" MatchDevicePath "/dev/input/event*" Driver "libinput" EndSection Section "InputClass" Identifier "libinput keyboard catchall" MatchIsKeyboard "on" MatchDevicePath "/dev/input/event*" Driver "libinput" EndSection Section "InputClass" Identifier "libinput touchpad catchall" MatchIsTouchpad "on" MatchDevicePath "/dev/input/event*" Driver "libinput" EndSection Section "InputClass" Identifier "libinput touchscreen catchall" MatchIsTouchscreen "on" MatchDevicePath "/dev/input/event*" Driver "libinput" EndSection Section "InputClass" Identifier "libinput tablet catchall" MatchIsTablet "on" MatchDevicePath "/dev/input/event*" Driver "libinput" EndSection
Answer
Synaptics user space driver is not very good in palm detection.
In Ubuntu 17.04 libinput is the default user space driver. It is not istalled for some reason.
Run in a terminal
sudo apt install xserver-xorg-input-libinput
to install it. Then reboot.
Tapping may be disabled by default. Edit /usr/share/X11/xorg.conf.d/40-libinput.conf to look this way:
# Match on all types of devices but tablet devices and joysticks
Section "InputClass"
Identifier "libinput pointer catchall"
MatchIsPointer "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput keyboard catchall"
MatchIsKeyboard "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput touchpad catchall"
MatchIsTouchpad "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
Option "Tapping" "True"
Option "NaturalScrolling" "True"
EndSection
Section "InputClass"
Identifier "libinput touchscreen catchall"
MatchIsTouchscreen "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Section "InputClass"
Identifier "libinput tablet catchall"
MatchIsTablet "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
to enable tapping and natural scrolling.
Attribution
Source : Link , Question Author : Yashbhatt , Answer Author : Pilot6
