Touchpad is not recognised on acer E5 771G

[Bernd]

HI all,

my touchpad is not recognised on my new Acer Aspire E5-771G. The problems occurred right after the installation of Ubuntu. Strange enough sometimes it works and after the next boot it doesnt.

On Windows 8.1 (i have dual boot) touchpad works fine.
Touchpad is not recognised, this meas there is no entry in xinput - list and no entry in /proc/bus/input/devices. In these cases when touchpad is working there are entries.

I tried gconftool statement, of course Fn+F7 every time, modprobe - r psmouse and so on. Nothing worked.
Touchpad is by synaptics. Ubuntu version ist 14.04

Any help would be very appreciated.
Thank you in advance !
Bernd Wollersheim

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Mon Jul 28 20:07:30 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.3.10, 3.13.0-32-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0882]
   Subsystem: Acer Incorporated [ALI] Device [1025:0882]
InstallationDate: Installed on 2014-07-19 (9 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Acer Aspire E5-771G
ProcEnviron:
 LANGUAGE=de_DE
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed root=UUID=5fe9f773-43c0-4098-aecd-8433aa1f2027 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/13/2014
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.05
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: EA70_HB
dmi.board.vendor: Acer
dmi.board.version: Type2 - A01 Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.05:bd05/13/2014:svnAcer:pnAspireE5-771G:pvrTBDbyOEM:rvnAcer:rnEA70_HB:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: Aspire E5-771G
dmi.product.version: TBD by OEM
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Mon Jul 28 19:57:47 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 5941
 vendor CMN
xserver.version: 2:1.15.1-0ubuntu2