On this Dell 15-7568, there is a touchpad with the left and right click areas merged into the pad.
Steps to Reproduce
With a clean install of 16.04:
- Place Thumb on left-click area
- Place middle finger on center of pad
- Click with thumb by pressing down
The pointer no longer moves on the screen until:
- Pace thumb on left-click area
- TOUCH (not press) the center of pad
Pointer movement is back to normal.
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Has anyone else come across similar issues? I'm trying to track down if this is Dell-specific.
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What other useful diagnostic info could I provide?
System Information
sudo dmidecode | grep "System Information" -A 3
System Information
Manufacturer: Dell Inc.
Product Name: Inspiron 15-7568
Version: Not Specified
xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ELAN Touchscreen id=11 [slave pointer (2)]
⎜ ↳ DLL06FF:00 06CB:75C4 Touchpad id=12 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad 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)]
↳ 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=13 [slave keyboard (3)]
↳ Dell WMI hotkeys id=15 [slave keyboard (3)]`
xinput --list-props 12
Device 'DLL06FF:00 06CB:75C4 Touchpad':
Device Enabled (137): 1
Coordinate Transformation Matrix (139): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (268): 1
Device Accel Constant Deceleration (269): 2.500000
Device Accel Adaptive Deceleration (270): 1.000000
Device Accel Velocity Scaling (271): 12.500000
Synaptics Edges (292): 49, 1180, 50, 4416
Synaptics Finger (293): 25, 30, 0
Synaptics Tap Time (294): 180
Synaptics Tap Move (295): 67
Synaptics Tap Durations (296): 180, 100, 100
Synaptics ClickPad (297): 1
Synaptics Middle Button Timeout (298): 0
Synaptics Two-Finger Pressure (299): 282
Synaptics Two-Finger Width (300): 7
Synaptics Scrolling Distance (301): -30, -30
Synaptics Edge Scrolling (302): 0, 0, 0
Synaptics Two-Finger Scrolling (303): 1, 1
Synaptics Move Speed (304): 1.000000, 1.750000, 0.129870, 0.000000
Synaptics Off (305): 0
Synaptics Locked Drags (306): 0
Synaptics Locked Drags Timeout (307): 5000
Synaptics Tap Action (308): 2, 3, 0, 0, 1, 3, 0
Synaptics Click Action (309): 1, 3, 0
Synaptics Circular Scrolling (310): 0
Synaptics Circular Scrolling Distance (311): 0.100000
Synaptics Circular Scrolling Trigger (312): 0
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, 0, 0
Synaptics Pad Resolution (323): 12, 12
Synaptics Area (324): 0, 0, 0, 4000
Synaptics Soft Button Areas (325): 614, 0, 761, 0, 0, 0, 0, 0
Synaptics Noise Cancellation (326): 7, 7
Device Product ID (255): 1739, 30148
Device Node (256): "/dev/input/event14"
Best Answer
The integrated keyboard and touchpad randomly freeze in my Dell Latitude 3450 (formally, my touchpad is a clickpad )
I solved all my problems with Synaptic touchpad and keyboard freeze by simple use libinput instead of synaptic driver. To do this, install:
additionally, to make sure it was libinput being used instead of synaptic driver, I removed the package with the Synaptic drivers
I also made some customizations in libinput settings. I created this configuration file:
with this content:
See all available configuration options on manpage of libinput
http://manpages.ubuntu.com/manpages/xenial/man4/libinput.4.html
http://who-t.blogspot.com.br/2016/04/why-libinput-doesnt-have-lot-of-config.html
https://wayland.freedesktop.org/libinput/doc/latest/clickpad_softbuttons.html
https://wiki.archlinux.org/index.php/Libinput
I tested only on Ubuntu 16.04
UPDATE 2016-05-08: I had forgotten that I was using the linux Kernel v4.5.x (the default Ubuntu 16.04 linux kernel is v4.4.x) when I wrote this.
The problem of the integrated keyboard and touchpad randomly freeze, even with the above configurations, still persist on my Latitude 3450 if i use with the official Ubuntu 16.04 linux kernel v4.4.x series (i test with kernel4.4.0-21-generic and 4.4.0-22-generic).
The problem does not occur with kernel v4.5.x (4.5.0-040500-generic)
It was really simple to install linux kernel 4.5.x.
Find out how to do: http://ubuntuhandbook.org/index.php/2016/03/upgrade-linux-kernel-4-5-ubuntu/
Said that, install a not officially supported new kernel, can eventually result in many problems.
remember to NOT uninstall the official kernel, because if you have problems with the unofficial kernel (so far, everything works perfectly on my machine), you can still start the system with the official kernel.
ps:
if all this not work for you, maybe go back to use synaptic and try follow this tutorial: http://hgdev.co/install-ubuntu-15-10-on-the-dell-xps-13-9343-2015-a-complete-guide/