** Changed in: xorg-server (Ubuntu)
Assignee: (unassigned) => Canonical X.org (canonical-x)
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https://bugs.launchpad.net/bugs/1005321
Title:
Several pointing device related problems occur when a touchscreen is
installed
Status in “xorg-server” package in Ubuntu:
Triaged
Bug description:
I'm running Kubuntu 12.04 64 bits on a Dell Inspiron One 2320, which
has a touchscreen. Whenever the touchscreen is active, several weird
problems related to the pointing device show up. Some examples:
1. In Libreoffice Calc, if I hover the mouse over the zoom control bar
in the bottom right corner of Calc's window, the mouse grabs the zoom
control by itself, without me clicking any button. If I move the mouse
left and right, without ever touching its buttons, it drags the zoom
control left and right.
2. In Libreoffice Calc, if I left-click a tab other than the currently
selected one, the new tab is selected as expected, but the mouse
behaves as if the clicked button had stuck. When I move the mouse
after selecting another tab, the mouse cursor changes to the arrow
with the little rectangle, as if it was dragging a cell.
3. In Chromium, if I right-click a link and left-click "Open link in
new tab", the mouse behaves as if the left-click stuck. When I move
the mouse after opening the new tab, the mouse cursor changes to the
little hand grabbing a sheet, as if I was moving the clicked link.
4. In Chromium, if I middle-click a link to open it in a new tab and
then left-click the newly opened tab, the mouse cursor changes to the
cross with arrowed points (the move window cursor) and the window is
restored, as if I had started to drag it and let it go right after.
5. In Handbrake, when a dialog opens, hovering the mouse over its text
without pressing any button selects the text.
Until now I haven't noticed similar problems with native KDE
applications, except that in Kontact/KMail the mouse cursor image does
not change according to the context (arrow cursor, text insertion
cursor, etc.).
Besides, there are several other problems related to the touchscreen
itself:
1. I can drag objects around the screen using the touchscreen, but I
can't click anywhere. When I tap the touchscreen to click, the mouse
cursor goes under my finger, but as long as I stop touching the cursor
goes to some random place of the screen and the click is not
registered.
2. While I'm dragging objects using the touchscreen or while I'm
drawing in Gimp or Kolourpaint using the touchscreen, the mouse cursor
keeps jumping down and going back to where my finger is. For example,
if I'm drawing an horizontal line with my finger, what I really get on
the screen is almost a filled in rectangle, because as I slide the
finger to one side, the mouse jumps down drawing a vertical line and
then goes back to my finger and keeps doing that while I'm sliding my
finger horizontally. I get several vertical lines very close to each
other. If I'm dragging a window horizontally, it keeps jumping down
and up again while I'm sliding the finger horizontally on the
touchscreen.
3. Multitouch does not work
After I got these results, I installed the following packages:
utouch and its dependencies
xinput-calibrator
They made no difference at all.
I then tried the following package:
xserver-xorg-input-tslib
After a reboot, this package disabled the touchscreen completely (?!)
and that was how I found out that the problems with Libreoffice,
Chromium, Handbrake and Kontact/KMail mentioned above were related to
the touchscreen. All problems were gone, but no touchscreen either.
Before I installed this package, xinput --list returned one device
named "Quanta OpticalTouchScreen". After I installed the package,
xinput --list shows two devices with exactly this name and the
touchscreen stopped responding.
Then I removed the previous package and installed this one:
xserver-xorg-input-multitouch
Which made no difference at all. The system returned to the previous
state, i.e., the touchscreen is responding but all the above mentioned
problems are back.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sun May 27 20:25:09 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120423)
ProcEnviron:
LANGUAGE=pt_BR
PATH=(custom, user)
LANG=pt_BR.UTF-8
SHELL=/bin/bash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
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