This is on a Dell XPS 13 9350 DE running ubuntu 16.04.
This laptop has a touchpad and a touchscreen.
I'm reporting here about the touchpad.
One can see from Xorg.0.log and "xinput list" that *two* touchpads are registered by the system
one is called "DLL0704:01 06CB:76AE Touchpad"
and the other "SynPS/2 Synaptics TouchPad"
As a result, syndaemon is not working.
To check this, open two terminals, press and hold some key, like "e" in one of them. It starts filling with "eeeeeee". Now while holding the key, use the touchpad to tap on the other terminal. Then "eeee" fills the new terminal.
Expected behaviour:
tapping on the other terminal should have no effet, the "e"'s should continue to fill the first terminal.
Moreover, configuring the touchpad with synclient is not working either.
FIX:
Since invoking
xinput disable "SynPS/2 Synaptics TouchPad"
has no effect, it is clear that this one is a "false" touchpad.
Hence this fix is:
Add an "ignore" section in /usr/share/X11/xorg.conf.d/50-synaptics.conf
I added, line 29:
Section "InputClass"
Identifier "touchpad ignore SynPS/2 Synaptics duplicate"
MatchProduct "SynPS/2 Synaptics TouchPad"
Option "Ignore" "on"
EndSection
Now it works. The touchpad is correctly disabled when using the keyboard, and moreover I can configure it using synclient, or adding a file to /etc/X11/xorg.conf.d/
Of course this fix is not universal because I had to use the precise name of the "false touchpad" as reported by xinput.
---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: san 1697 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=0dbbd1c1-bb58-45af-8c68-716d7ae636e7
InstallationDate: Installed on 2016-06-03 (9 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0c45:670c Microdia
Bus 001 Device 003: ID 04f3:20d0 Elan Microelectronics Corp.
Bus 001 Device 002: ID 8087:0a2b Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 13 9350
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-24-generic.efi.signed root=UUID=75dd5fb6-2ff1-4f2b-859d-4c3942a5c45b ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
RelatedPackageVersions:
linux-restricted-modules-4.4.0-24-generic N/A
linux-backports-modules-4.4.0-24-generic N/A
linux-firmware 1.157
Tags: xenial
Uname: Linux 4.4.0-24-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/01/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.3
dmi.board.name: 09JHRY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.3:bd03/01/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn09JHRY:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 13 9350
dmi.sys.vendor: Dell Inc.
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1591669
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.