touchpad won't move mouse after waking from sleep (still scrolls and clicks)

[Ana Nelson]

After waking the computer from sleep (initiated by closing the lid), I can't move the mouse using the touchpad. The touchpad will still click and scroll, the mouse cursor is visible but it doesn't move. The TrackPoint mouse still works, and plugging in an external mouse works.

If I turn the Touchpad off and on in the Mouse & Touchpad settings, then it resumes working.

Stack trace in /var/log/Xorg.0.log (presumably attached) looks relevant:

(EE) [dix] SynPS/2 Synaptics TouchPad: unable to find touch point 0
(EE) BUG: triggered 'if (priv->num_active_touches > priv->num_slots)'
(EE) BUG: ../../src/synaptics.c:2644 in UpdateTouchState()

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xserver-xorg-input-synaptics 1.7.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
Date: Thu Oct 31 06:55:48 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
InstallationDate: Installed on 2013-10-22 (9 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: LENOVO 36984SU
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/25/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: GFET31WW (1.10 )
dmi.board.asset.tag: Not Available
dmi.board.name: 36984SU
dmi.board.vendor: LENOVO
dmi.board.version: Win8 Pro DPK TPG
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGFET31WW(1.10):bd03/25/2013:svnLENOVO:pn36984SU:pvrThinkPadHelix:rvnLENOVO:rn36984SU:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 36984SU
dmi.product.version: ThinkPad Helix
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1
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: Wed Oct 30 08:57:13 2013
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 12893
 vendor AUO
xserver.version: 2:1.14.3-3ubuntu2

[penalvch (penalvch)]

Ana Nelson, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-input-synaptics REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-input-synaptics (Ubuntu) because there has been no activity for 60 days.]