Wrong recognition of Touchinput

[Thorsten]

Touchinput is not correct recognisied in different programms:

1. In Firefox: i am not able to open dropdown menus like for example folders in the bookmarks-toolbar but also dropdown lists on websites: they open and are immediately closed again
2. In chromium there is also a strange behavior in dropdown menus, like the bookmarks-folder or the settings menu: they can be opened by touch but one can only select an element if one touches it very very fast, almost instantly otherwise there is just no reaction until i open the menu again.

I only notice this bug on a thinkpad t440s and not on a x220t (there is all working flawlessly). This behaviour also occurs on ubuntu 14.04 live version. This bug does NOT occur in Kubuntu 14.04 and Ubuntu Gnome 14.04!

Ubuntu release:

Description: Ubuntu 14.04 LTS
Release: 14.04

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.0+14.04.20140423-0ubuntu1.2
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: sep3_10 pax apwr3_1
ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Fri May 16 00:15:23 2014
InstallationDate: Installed on 2014-04-28 (16 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)