Public bug reported:

I'm on Lenovo T450s, but there are reports of others having the same
problem that touchpad disabling, which is no longer an explicit option,
is not working. This leads to data loss and frustration when
typing/editing, etc.

With default settings, I find that syndaemon has been run with the
following options:

$ ps aux|grep synd
meuser     2798  0.0  0.0  22504  2784 ?        S    Jul15   0:02 syndaemon -i 
1.0 -t -K -R

However, this fails. My palms/ base of my thumbs, in particular, hover
over my touchpad while typing and frequently cause unintended  motion
AND mouse-click events, highlighting and deleting text, switching
windows, etc.

The diagnosis seems to be (http://askubuntu.com/questions/299868
/disable-touchpad-while-typing-does-not-work) that the -t option is not
working, ie mouse clicks are still allowed when it is called.

The following two commands are a work-around for me under 16.04 on this
hardware. They result in perfect touchpad disabling while typing:

killall syndaemon
syndaemon -i 1 -KRd

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-input-synaptics 1.8.2-1ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jul 17 12:17:26 2016
DistUpgraded: 2016-05-24 18:07:00,267 DEBUG icon theme changed, re-reading
DistroCodename: xenial
DistroVariant: ubuntu
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-02-12 (155 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20BXCTO1WW
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic.efi.signed 
root=UUID=ea2fb511-8d62-4b96-bdaa-4b3f7bf79cc6 ro noprompt quiet splash 
vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: Upgraded to xenial on 2016-05-24 (53 days ago)
dmi.bios.date: 11/06/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET54WW (1.19 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BXCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: 
dmi:bvnLENOVO:bvrJBET54WW(1.19):bd11/06/2015:svnLENOVO:pn20BXCTO1WW:pvrThinkPadT450s:rvnLENOVO:rn20BXCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BXCTO1WW
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Fri Jul 15 21:21:11 2016
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                               20104 
 vendor                                     GSM
xserver.version: 2:1.18.3-1ubuntu2.2

** Affects: xserver-xorg-input-synaptics (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug ubuntu xenial

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-input-synaptics in Ubuntu.
https://bugs.launchpad.net/bugs/1603791

Title:
  syndaemon "-t" option fails, in turn making  touchpad disable while
  typing not work

Status in xserver-xorg-input-synaptics package in Ubuntu:
  New

Bug description:
  I'm on Lenovo T450s, but there are reports of others having the same
  problem that touchpad disabling, which is no longer an explicit
  option, is not working. This leads to data loss and frustration when
  typing/editing, etc.

  With default settings, I find that syndaemon has been run with the
  following options:

  $ ps aux|grep synd
  meuser     2798  0.0  0.0  22504  2784 ?        S    Jul15   0:02 syndaemon 
-i 1.0 -t -K -R

  However, this fails. My palms/ base of my thumbs, in particular, hover
  over my touchpad while typing and frequently cause unintended  motion
  AND mouse-click events, highlighting and deleting text, switching
  windows, etc.

  The diagnosis seems to be (http://askubuntu.com/questions/299868
  /disable-touchpad-while-typing-does-not-work) that the -t option is
  not working, ie mouse clicks are still allowed when it is called.

  The following two commands are a work-around for me under 16.04 on
  this hardware. They result in perfect touchpad disabling while typing:

  killall syndaemon
  syndaemon -i 1 -KRd

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xserver-xorg-input-synaptics 1.8.2-1ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Jul 17 12:17:26 2016
  DistUpgraded: 2016-05-24 18:07:00,267 DEBUG icon theme changed, re-reading
  DistroCodename: xenial
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-02-12 (155 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 20BXCTO1WW
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic.efi.signed 
root=UUID=ea2fb511-8d62-4b96-bdaa-4b3f7bf79cc6 ro noprompt quiet splash 
vt.handoff=7
  SourcePackage: xserver-xorg-input-synaptics
  UpgradeStatus: Upgraded to xenial on 2016-05-24 (53 days ago)
  dmi.bios.date: 11/06/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: JBET54WW (1.19 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BXCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrJBET54WW(1.19):bd11/06/2015:svnLENOVO:pn20BXCTO1WW:pvrThinkPadT450s:rvnLENOVO:rn20BXCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20BXCTO1WW
  dmi.product.version: ThinkPad T450s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160325-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.12-1build2
  xserver.bootTime: Fri Jul 15 21:21:11 2016
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               20104 
   vendor                                     GSM
  xserver.version: 2:1.18.3-1ubuntu2.2

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