** Changed in: xorg-server
Status: Confirmed => Unknown
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Title:
xserver mouse pointer emulation from touch breaks with QML app.
To manage
When this fixed in 14.04 Trusty Tahr for 14.04.1 (24 July)?
Many "critical" bugs on ReleaseNotes Trusty Tahr page don't fixed presently:
https://wiki.ubuntu.com/TrustyTahr/ReleaseNotes#Known_issues
Installation bugs too:
https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1066480
https://bugs
** Changed in: oem-priority/trusty
Status: Fix Committed => Fix Released
** Changed in: oem-priority
Status: Fix Committed => Fix Released
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This bug was fixed in the package qtbase-opensource-src - 5.2.1+dfsg-
1ubuntu14.2
---
qtbase-opensource-src (5.2.1+dfsg-1ubuntu14.2) trusty; urgency=medium
* debian/patches/xi2-use-master-device.patch:
- Make xi2 select events on master device instead of slaves.
(LP: #1307
** Changed in: oem-priority/trusty
Status: Triaged => Fix Committed
** Changed in: oem-priority
Status: New => Fix Committed
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Title:
** Tags removed: verification-needed
** Tags added: verification-done
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Title:
xserver mouse pointer emulation from touch breaks with QML app.
To
I can no longer reproduce this with qtbase 5.2.1+dfsg-1ubuntu14.2 - nice
work!
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Title:
xserver mouse pointer emulation from touch breaks with QML
Hello Steve, or anyone else affected,
Accepted qtbase-opensource-src into trusty-proposed. The package will
build now and be available at http://launchpad.net/ubuntu/+source
/qtbase-opensource-src/5.2.1+dfsg-1ubuntu14.2 in a few hours, and then
in the -proposed repository.
Please help us by testi
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg-server (Ubuntu Trusty)
Status: New => Confirmed
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qtbase 5.2.1+dfsg-1ubuntu14.2 SRU for trusty is in unapproved queue now
too
(https://launchpad.net/ubuntu/trusty/+queue?queue_state=1&queue_text=)
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This bug was fixed in the package qtbase-opensource-src - 5.2.1+dfsg-
1ubuntu17
---
qtbase-opensource-src (5.2.1+dfsg-1ubuntu17) utopic; urgency=medium
* Disable PCH also on arm64 in addition to armel/armhf (LP: #1318635)
-- Timo JyrinkiTue, 13 May 2014 04:37:13 +
** Chang
** Branch linked: lp:~kubuntu-packagers/kubuntu-packaging/qtbase-
opensource-src
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Title:
xserver mouse pointer emulation from touch breaks with Q
** Also affects: xorg-server (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: unity (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: qtbase-opensource-src (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: qtbase-ope
Launchpad has imported 8 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=78345.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
https://help
** Changed in: xorg-server (Ubuntu)
Assignee: (unassigned) => Maarten Lankhorst (mlankhorst)
** Changed in: xorg-server (Ubuntu)
Importance: Undecided => High
** Changed in: xorg-server (Ubuntu)
Status: New => In Progress
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Qt still XISelectEvents my "N-Trig Pen stylus" and "N-Trig Pen eraser"
slave devices though. But thankfully no events come from them and thus
peace is maintained :)
** Changed in: unity (Ubuntu)
Status: In Progress => Invalid
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I confirm that the Qt from
https://launchpad.net/~canonical-x/+archive/x-staging does
XISelectEvents on the master pointer (instead of the touchscreen slave
device, as previously) and that the resulting behavior of the xserver is
good. Ie., touch ownership mechanics work properly and mouse pointer
** Also affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Also affects: xorg-server via
https://bugs.freedesktop.org/show_bug.cgi?id=78345
Importance: Unknown
Status: Unknown
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qtbase-opensource-src (Ubuntu)
Status: New => Confirmed
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** Package changed: xorg-server (Ubuntu) => qtbase-opensource-src
(Ubuntu)
** Changed in: qtbase-opensource-src (Ubuntu)
Importance: Undecided => High
** Changed in: qtbase-opensource-src (Ubuntu)
Status: New => In Progress
** Changed in: qtbase-opensource-src (Ubuntu)
Assignee: (
@Daniel: thanks for taking the time to file an upstream bug report.
I have tested Maarten's latest work on the Qt library, and I can confirm that
it solves the issue on both tablets and non-tablets. Maarten's work is
available here (you only need to update the qt packages):
https://launchpad.net
And here's the upstream bug I reported:
https://bugs.freedesktop.org/show_bug.cgi?id=78345
** Bug watch added: freedesktop.org Bugzilla #78345
https://bugs.freedesktop.org/show_bug.cgi?id=78345
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I've just rebuilt Qt with a partial fix which only covers the "non-
tablet" test case, and I'm glad to report that it solves the problem.
Maarten is working on an all comprehensive fix.
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@Stephen: I guess that means that your device passes the following
check:
if (tabletData.valuatorInfo.contains(QXcbAtom::AbsX) &&
tabletData.valuatorInfo.contains(QXcbAtom::AbsY) &&
tabletData.valuatorInfo.contains(QXcbAtom::AbsPressure))
which you can check using xinput list-props $dev
I think the XIDeviceEvent.sourceid would tell you from which device it
originates. The XIDeviceEvent.deviceid member would be set to the
master device, which might break things in a straight conversion.
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The code in Qt that subscribes to slave device events is the explicit
tablet-handling code. Checking the code, the touchscreen on my Dell XT2
is being treated as a tablet by the Qt code because it supports a stylus
mode on one of its alternate devices.
It sounds like the bug is in the Qt XCB QPA
> Is there a specific reason for calling XISelectEvents() for each
slave vs using XIAllMasterDevices in QXcbConnection::xi2Select() in Qt?
Would have to dig into Qt code to tell that. But my guess is that
because it exposes QTouchDevice objects to applications. For every
QTouchEvent you can get t
Is there a specific reason for calling XISelectEvents() for each slave
vs using XIAllMasterDevices in QXcbConnection::xi2Select() in Qt?
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Title:
Excerpt from #xorg-devel:
"""
daniels, I've the following situation: clientX has a
XISelectEvents(TouchBegin|Update|End, childWindowA, slaveDevice1); clientY has
a XIPassiveGrabDevice(TouchBegin|Update|End|Ownership, rootWindow,
AllMasterDevices)
daniels, when a touch reaches xserver, it send
xserver packages I used to take the logs above.
** Attachment added: "xserver debian packages with detailed logging of input
events"
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1307701/+attachment/4106288/+files/xorg_debug_packages.zip
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Attaching detailed xserver log. The following steps were taken:
1- sudo restart lightdm (to restart the X server. so that de have a clean slate)
2- run a very simple qml app with qmlscene
3- tapped on that qmlscene window (touch id 1)
4- tapped on the desktop area (nautilus) (touch id 2)
5- sudo s
Took the liberty of correcting the bug title as unity does keep getting
touch events. It's the xserver mouse pointer emulation from touch events
that breaks badly.
** Also affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
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