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[Arthur Goldman <annoyedAlchemist@xxxxxxxxx>]

My system is small enough that I don't keep old kernels and I was unable 
to convince Synaptic to force an old version, so I don't know.  I ended 
up reinstalling Ubuntu using the Haswell Chromebook script 
http://chromeos-cr48.blogspot.com/2013/10/chrubuntu-for-new-chromebooks-now-with.html 
which gave 3.11.0.15.16 according to Synaptic and the Software Center, 
and the touchpad worked fine after that, but I don't know if that's the 
older kernel, and Synaptic and the Software Center list that as the 
latest, or if it's the special install.

Really sorry I couldn't be of more help.

On 01/10/2014 12:35 PM, Christopher M. Penalver wrote:
> Arthur Goldman, thank you for reporting this and helping make Ubuntu
> better. If you boot into a kernel prior to the proposed repository
> kernel 3.11.0-15.23 does the trackpad begin to work again?
>
> ** Changed in: xserver-xorg-input-synaptics (Ubuntu)
>     Importance: Undecided => Low
>
> ** Changed in: xserver-xorg-input-synaptics (Ubuntu)
>         Status: New => Incomplete
>
> ** Package changed: xserver-xorg-input-synaptics (Ubuntu) => linux
> (Ubuntu)
>
> ** Changed in: linux (Ubuntu)
>     Importance: Low => High
>
> ** Tags added: regression-proposed
>

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1266076

Title:
  Acer C720 touchpad (trackpad) no longer detected after update

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  This morning I installed an update for Ubuntu 13.10.  The update log
  yields:

  Start-Date: 2014-01-04  11:43:41
  Commandline: aptdaemon role='role-commit-packages' sender=':1.71'
  Install: linux-headers-3.11.0-15-generic:i386 (3.11.0-15.23), linux-image-3.11.0-15-generic:i386 (3.11.0-15.23), linux-headers-3.11.0-15:i386 (3.11.0-15.23), linux-image-extra-3.11.0-15-generic:i386 (3.11.0-15.23)
  Upgrade: apport-gtk:i386 (2.12.5-0ubuntu2.1, 2.12.5-0ubuntu2.2), systemd-shim:i386 (4-0ubuntu0.13.10, 6-0ubuntu0.13.10), linux:i386 (3.11.0.14.15, 3.11.0.15.16), apport:i386 (2.12.5-0ubuntu2.1, 2.12.5-0ubuntu2.2), linux-generic:i386 (3.11.0.14.15, 3.11.0.15.16), libgnome-desktop-3-7:i386 (3.8.4-0ubuntu1, 3.8.4-0ubuntu1.1), linux-libc-dev:i386 (3.11.0-14.21, 3.11.0-15.23), python3-apport:i386 (2.12.5-0ubuntu2.1, 2.12.5-0ubuntu2.2), linux-image-generic:i386 (3.11.0.14.15, 3.11.0.15.16), linux-headers-generic:i386 (3.11.0.14.15, 3.11.0.15.16), python3-problem-report:i386 (2.12.5-0ubuntu2.1, 2.12.5-0ubuntu2.2), gnome-desktop3-data:i386 (3.8.4-0ubuntu1, 3.8.4-0ubuntu1.1)
  End-Date: 2014-01-04  11:45:17

  After the update, my trackpad is no longer detected during startup.  I
  have checked the kernel log, before the update, I see

  Dec 30 20:23:04 chrubuntu kernel: [    4.217061] input: Cypress APA
  Trackpad (cyapa) as
  /devices/pci0000:00/0000:00:15.1/i2c-8/8-0067/input/input13

  After the update, this line no longer appears and my trackpad does not
  function.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: xserver-xorg-input-synaptics 1.7.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic i686
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: i386
  Date: Sat Jan  4 12:19:22 2014
  DistUpgraded: Fresh install
  DistroCodename: saucy
  DistroVariant: ubuntu
  MachineType: Acer Peppy
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no username)
   XDG_RUNTIME_DIR=<set>
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=b9a17ad6-247f-48ac-b2c2-d3c0192550ef ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-input-synaptics
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/29/2013
  dmi.bios.vendor: coreboot
  dmi.chassis.type: 3
  dmi.chassis.vendor: Acer
  dmi.modalias: dmi:bvncoreboot:bvr:bd10/29/2013:svnAcer:pnPeppy:pvr1.0:cvnAcer:ct3:cvr:
  dmi.product.name: Peppy
  dmi.product.version: 1.0
  dmi.sys.vendor: Acer
  version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
  version.libdrm2: libdrm2 2.4.46-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Sat Jan  4 11:51:52 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4402 
   vendor                                     CMN
  xserver.version: 2:1.14.3-3ubuntu2

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