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Created attachment 98694 xorg-integration-tests testcase try 2 Ok so I've finally isolated the problem. The problem is the XIGrabDevice on the slave pointer, which is only removed after the touch ends. When this happens the ButtonRelease call for pointer emulation is never generated, leading to the 'stuck button' bug. Modifying qt to listen to touch events on the master fixes it and removes the need for the XIGrabDevice call. The grab was originally done to prevent pointer emulation events, but these won't get generated when we listen for touch events on the master, solving both problems. But this is still a bug in xorg-server, regardless. :) -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1307701 Title: xserver mouse pointer emulation from touch breaks with QML app. Status in OEM Priority Project: New Status in OEM Priority Project trusty series: Triaged Status in X.Org X server: Confirmed Status in “qtbase-opensource-src” package in Ubuntu: In Progress Status in “unity” package in Ubuntu: Invalid Status in “xorg-server” package in Ubuntu: In Progress Bug description: When running an SDK app on the desktop, it's not possible to use the touchscreen to move windows, use the launcher, etc. The SDK app seems to consume all touchscreen events. To reproduce: 1) On a desktop/laptop with a touchscreen (I am using a Dell XPS13), install 14.04 and check that the touchscreen works for moving windows 2) Install the camera-app package from universe (I have 2.9.1+14.04.20140331-0ubuntu1) 3) Launch the camera app 4) Touch once inside the camera-app window 5) Use the touchscreen to drag the camera-app window Expected results: You can move the camera-app window using the touchscreen Actual results: You cannot move the camera-app window, or perform any other touch tasks in unity, with the touchscreen This only affects touchscreen input - mouse/touchpad input is not affected This affects all apps written with the SDK (I tried camera-app, gallery-app, reminders-app). It's 100% reproducible. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: unity 7.2.0+14.04.20140411-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu2 Architecture: amd64 CompizPlugins: [core,commands,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CurrentDesktop: Unity Date: Mon Apr 14 14:59:09 2014 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-precise-amd64-20130203-1 EcryptfsInUse: Yes InstallationDate: Installed on 2013-12-02 (132 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50 SourcePackage: unity UpgradeStatus: Upgraded to trusty on 2014-02-12 (61 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1307701/+subscriptions
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