The essential
I have a Dell Precision 6600, with an Alps touchpad under Ubuntu 14.04 LTS. The touchpad does not work at all, but it used to work fine, with two-finger scrolling, etc.
Symptoms:
The touchpad does not work at all.
Touchpad buttons work.
An external mouse works.
The pointing stick works.The touchpad is detected, see below the output of
cat /proc/bus/input/devices,xinput --list,xinput --list-props 12.touchpad-indicatordoes not see the touchpad (and exits with error). This is perhaps ok (though I am not sure), since I have an Alps, and it might be ok not to have a synaptics driver. See below the output oftouchpad-indicator.In System Settings -> Mouse & Touchpad, there is a single tab (some -this and this- see a separate tab for the touchpad) with no settings for the touchpad.
There is no touchpad in
gconf-editor-> desktop -> gnome -> peripherals (I do see mouse and keyboard).
See below what I got when looking for related settings. I do not know where to check more on this to gather additional relevant info.
I do not know when the touchpad stopped working. The only thing I recall as a possibility is when I issued
sudo apt-get remove linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic
As far as I recall, I did this when trying to make Virtualbox work.
Any hints on how to recover the touchpad?
What else I found
I have found this, but prior to trying this option I would like to check if i8042 and i2c-hid are potential issues in my case.
This and this seem to apply to 12.04. Further, kernel support for touchpad seems to have evolved a lot, so old posts like this, this, and this are likely outdated.
evtestdetects touchpad activity when debugging. See also this.I am not sure if this and this refer to recovering multitouch, not to getting back functionality from nothing.
Output of various commands.
devices:
$ cat /proc/bus/input/devices
...
I: Bus=0011 Vendor=0002 Product=0008 Version=0300
N: Name="AlpsPS/2 ALPS DualPoint TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse1 event6
B: PROP=8
B: EV=b
B: KEY=e420 70000 0 0 0 0
B: ABS=260800001000003
...
xinput:
$ xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ AlpsPS/2 ALPS DualPoint TouchPad id=12 [slave pointer (2)]
⎜ ↳ DualPoint Stick id=13 [slave pointer (2)]
⎜ ↳ OM id=15 [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)]
↳ Laptop_Integrated_Webcam_FHD id=10 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
↳ Dell WMI hotkeys id=14 [slave keyboard (3)]
xinput --list-props:
$ xinput --list-props 12
Device 'AlpsPS/2 ALPS DualPoint TouchPad':
Device Enabled (141): 1
Coordinate Transformation Matrix (143): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (269): 0
Device Accel Constant Deceleration (270): 1.000000
Device Accel Adaptive Deceleration (271): 1.000000
Device Accel Velocity Scaling (272): 10.000000
Device Product ID (260): 2, 8
Device Node (261): "/dev/input/event6"
Evdev Axis Inversion (273): 0, 0
Evdev Axis Calibration (274): <no items>
Evdev Axes Swap (275): 0
Axis Labels (276): "Abs MT Position X" (267), "Abs MT Position Y" (268), "Abs Pressure" (266), "None" (0), "None" (0)
Button Labels (277): "Button Left" (144), "Button Middle" (145), "Button Right" (146), "Button Wheel Up" (147), "Button Wheel Down" (148)
Evdev Middle Button Emulation (278): 0
Evdev Middle Button Timeout (279): 50
Evdev Third Button Emulation (280): 0
Evdev Third Button Emulation Timeout (281): 1000
Evdev Third Button Emulation Button (282): 3
Evdev Third Button Emulation Threshold (283): 20
Evdev Wheel Emulation (284): 0
Evdev Wheel Emulation Axes (285): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (286): 10
Evdev Wheel Emulation Timeout (287): 200
Evdev Wheel Emulation Button (288): 4
Evdev Drag Lock Buttons (289): 0
touchpad-indicator:
$ /opt/extras.ubuntu.com/touchpad-indicator/bin/touchpad-indicator &> touchpad-indicator.txt
$ cat touchpad-indicator.txt
No LSB modules are available.
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
Couldn't find synaptics properties. No synaptics driver loaded?
<gettext.GNUTranslations object at 0x7f4ec797a550>
#####################################################
#####################################################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty
Version: x86_64
#####################################################
Touchpad-Indicator version: 1.1.0-0extras15.04.3-src
#####################################################
pidof syndaemon
Traceback (most recent call last):
File "/opt/extras.ubuntu.com/touchpad-indicator/bin/touchpad-indicator", line 42, in <module>
main()
File "/opt/extras.ubuntu.com/touchpad-indicator/share/touchpad-indicator/touchpad_indicator.py", line 495, in main
tpi=TouchpadIndicator()
File "/opt/extras.ubuntu.com/touchpad-indicator/share/touchpad-indicator/touchpad_indicator.py", line 97, in __init__
self.read_preferences()
File "/opt/extras.ubuntu.com/touchpad-indicator/share/touchpad-indicator/touchpad_indicator.py", line 274, in read_preferences
self.synclient.set('VertScrollDelta',abs(int(self.synclient.get('VertScrollDelta'))))
TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'
Exception ignored in: <bound method Context.__del__ of <pyudev.core.Context object at 0x7f4ec74cfa58>>
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pyudev/core.py", line 98, in __del__
AttributeError: 'NoneType' object has no attribute 'udev_unref'
Others
$ locate /desktop/gnome/peripherals
(empty output)
$ locate /desktop/gnome/ | grep mouse
(empty output)
