MatchIsTouchscreen also matches touchpads in 16.04

Bug #1576784 reported by Pedro Morales on 2016-04-29
20
This bug affects 4 people
Affects Status Importance Assigned to Milestone
xorg (Ubuntu)
High
Unassigned

Bug Description

Previously in 15.10 I had the following rule in /usr/share/X11/xorg.conf.d/99-no-touchscreen.conf:
Section "InputClass"
    Identifier "Touchscreen disable"
    MatchIsTouchscreen "on"

    Option "Ignore" "on"
EndSection

This worked in disabling the touchpad on my lenovo T440s

After the upgrade to 16.04 I noticed that my touchpad would not work. And I found the following lines in the log:
[ 3107.956] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event6)
[ 3107.956] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "Touchscreen disable"
[ 3107.956] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
[ 3107.956] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "Touchscreen disable"

So I had to disable the rule in order to be able to use the touchpad, and now I can't disable the touchscreen.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-22.38-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Apr 29 09:39:23 2016
InstallationDate: Installed on 2015-03-18 (407 days ago)
InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
UpgradeStatus: Upgraded to xenial on 2016-04-28 (1 days ago)

Pedro Morales (pedratan) wrote :
Pedro Morales (pedratan) wrote :

I'm attaching the full xorg log outpout when the disbaling was active

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in xorg (Ubuntu):
status: New → Confirmed
machrider (machrider) wrote :

I'm seeing the same problem with my Dell touchpad since upgrading to 16.04. /proc/bus/input/devices shows my touchpad as:

I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input5
U: Uniq=
H: Handlers=mouse0 event6
B: PROP=5
B: EV=b
B: KEY=e520 10000 0 0 0 0
B: ABS=660800011000003

The touchscreen is:

I: Bus=0003 Vendor=06cb Product=1ac3 Version=0111
N: Name="SYNAPTICS Synaptics Large Touch Screen"
P: Phys=usb-0000:00:14.0-6/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-6/3-6:1.0/0003:06CB:1AC3.0001/input/input14
U: Uniq=
H: Handlers=mouse1 event13
B: PROP=2
B: EV=b
B: KEY=400 0 0 0 0 0
B: ABS=260800000000003

Previously MatchIsTouchscreen only matched my touchscreen, but now it's matching the touchpad, too.

Changed in xorg (Ubuntu):
importance: Undecided → High
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