Every key is pressed twice on the desktop

[Sam Segers]

If I launch an app with QT_IM_MODULE=MaliitPhablet system-settings, every key is pressed twice.
Pressing h - a - l - l -o - <space> gives me:
'Hhaalllloo. '

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-keyboard 0.99.trunk.phablet2+15.04.20150326-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 4 21:43:00 2015
InstallationDate: Installed on 2014-10-10 (206 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140922)
SourcePackage: ubuntu-keyboard
SystemImageInfo:
 current build number: 0
 device name:
 channel: daily
 last update: Unknown
UpgradeStatus: Upgraded to vivid on 2015-01-02 (122 days ago)

[Jason Daborn (mtx-lives)]

Hi I just upgraded to OTA8 on Mako and successfully connected a bluetooth mouse (Logitech M557) and an external screen. I forgot to bring a keyboard but luckily when I clicked on the login to enter the password an on-screen keyboard appeared. But when using the mouse to key in my numeric password it failed until I realised that it was doing a double keypress each time. If I press the back key after each digit I enter I can successfully login, proving the double digit input for each on-screen mouse keypress, thx

[Michael Zanetti (mzanetti)]

Getting a new duplicate report for this every week. Maybe we should raise priority.

[Michael Sheldon (michael-sheldon)]

This looks like it's an upstream Qt bug, the release signal is sent twice when clicking a MultiPointTouchArea with a mouse, there's a bug report for this here: https://bugreports.qt.io/browse/QTBUG-44370 which also includes a patch against 5.6 that's currently still in review.

Would the qtdeclarative-opensource-src maintainers be willing to backport that patch and apply it against 5.5? Or should I attempt to work around it in the keyboard?

[Michael Sheldon (michael-sheldon)]

Sorry, the above should say 5.4 not 5.5.

I've linked a work around branch that we can land in the mean time.

[kevin gunn (kgunn72)]

We've reached out about a backport.
And small correction, this would be needed for 5.4 to effect our current images.

[Timo Jyrinki (timo-jyrinki)]

The patch is small and probably no problem applying it. The current problem is that it hasn't been reviewed and accepted in upstream, ie it's still open https://codereview.qt-project.org/#/c/127898/

[Timo Jyrinki (timo-jyrinki)]

Please test the fix for this from silo https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-025/ - it includes a fix for both this and bug #1521917

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-keyboard - 0.99.trunk.phablet2+16.04.20151201.1-0ubuntu1

---------------
ubuntu-keyboard (0.99.trunk.phablet2+16.04.20151201.1-0ubuntu1) xenial; urgency=medium

  [ CI Train Bot ]
  * New rebuild forced.

  [ Michael Sheldon ]
  * Work around upstream QT bugs 41692 and 44370 which cause incorrect
    touch point events when using a mouse (LP: #1451554)

 -- Michael Sheldon <email address hidden> Tue, 01 Dec 2015 15:42:37 +0000

[Łukasz Zemczak (sil2100)]

This bug was fixed in the package qtdeclarative-opensource-src 5.4.1-1ubuntu11~overlay2 in https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/stable-phone-overlay

---------------

qtdeclarative-opensource-src (5.4.1-1ubuntu11~overlay2) vivid; urgency=medium

  * debian/patches/Flickable-avoid-perturbing-the-timeline-further-whil.patch:
    - Avoid infinite velocity during release, after a drag. (LP: #1521917)
  * debian/patches/MultiPointTouchArea-Fixed-released-duplication-on-mo.patch:
    - Fix every key being pressed twice on desktop (LP: #1451554)

 -- Timo Jyrinki <email address hidden> Mon, 14 Dec 2015 07:07:01 +0000

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtdeclarative-opensource-src - 5.5.1-2ubuntu3

---------------
qtdeclarative-opensource-src (5.5.1-2ubuntu3) xenial; urgency=medium

  * debian/patches/Flickable-avoid-perturbing-the-timeline-further-whil.patch:
    - Avoid infinite velocity during release, after a drag. (LP: #1521917)
  * debian/patches/MultiPointTouchArea-Fixed-released-duplication-on-mo.patch:
    - Fix every key being pressed twice on desktop (LP: #1451554)

 -- Timo Jyrinki <email address hidden> Mon, 14 Dec 2015 07:02:00 +0000