This bug was fixed in the package mutter - 3.32.0+git20190410-1ubuntu1
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mutter (3.32.0+git20190410-1ubuntu1) disco; urgency=medium
* Merge with debian git snapshot (LP: #1820542), remaining changes:
+ debian/control:
- Update VCS flags to point to launchpad
-
Fix committed via Debian:
mutter (3.32.0+git20190410-1) experimental; urgency=medium
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset with two screens (even
** Merge proposal linked:
https://code.launchpad.net/~3v1n0/ubuntu/+source/mutter/+git/mutter/+merge/365833
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset
** Tags removed: fixed-in-3-32.1
** Tags added: fixed-in-3.32.1
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset with two screens (even appearing on the wrong
Oh, wow, fixed in mutter 3.32.1 already?!
https://gitlab.gnome.org/GNOME/mutter/merge_requests/503
** Tags added: fixed-in-3-32.1 fixed-upstream
** Summary changed:
- Touch input is offset with two screens (even appearing on the wrong screen)
+ Touch input is offset with two screens (even
** Changed in: mutter
Status: Unknown => Fix Released
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset with two screens (even appearing on the wrong
** Changed in: mutter (Ubuntu)
Importance: Undecided => High
** Changed in: mutter (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1821933
Title:
Removed the upstream but I logged and replaced it with one which was
already logged, and fixed.
** No longer affects: mutter
** Bug watch added: gitlab.gnome.org/GNOME/mutter/issues #514
https://gitlab.gnome.org/GNOME/mutter/issues/514
** Also affects: mutter via
** Tags removed: rls-dd-incoming
** Tags added: rls-dd-notfixing
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset with two screens (even appearing on the wrong
** Bug watch added: gitlab.gnome.org/GNOME/gnome-shell/issues #1136
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1136
** Also affects: mutter via
https://gitlab.gnome.org/GNOME/gnome-shell/issues/1136
Importance: Unknown
Status: Unknown
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In reply to comment #22:
$ apt-cache policy mutter
mutter:
Installed: 3.32.0-1ubuntu1vv1
Candidate: 3.32.0-1ubuntu1vv1
Version table:
*** 3.32.0-1ubuntu1vv1 500
500 http://ppa.launchpad.net/vanvugt/lp1821933/ubuntu disco/main amd64
Packages
100 /var/lib/dpkg/status
In reply to comment #21:
$ apt-cache policy mutter
mutter:
Installed: 3.32.0-1
Candidate: 3.32.0-1ubuntu1
Version table:
3.32.0-1ubuntu1 500
500 http://gb.archive.ubuntu.com/ubuntu disco/main amd64 Packages
*** 3.32.0-1 100
100 /var/lib/dpkg/status
The result is the
If ^^^ reverting the version of mutter installed ^^^ doesn't fix the bug
then please try the PPA
(https://launchpad.net/~vanvugt/+archive/ubuntu/lp1821933). Because your
feedback on that will guide the design of a proper fix then.
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Will,
Please test the previous mutter release debs, just in case it's an
xrandr scaling regression. The previous release is here:
https://launchpad.net/ubuntu/+source/mutter/3.32.0-1/+build/16489975
** Changed in: gnome-shell (Ubuntu)
Status: Confirmed => Incomplete
** Package
This bug is being marked notfixing. That doesn't mean it wont get
fixed, but that we won't block release on it.
** Tags removed: rls-dd-incoming
** Tags added: releasenotes rls-dd-notfixing
** Tags removed: releasenotes rls-dd-notfixing
** Tags added: desktop-trello-import rls-dd-incoming
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More testing:
Testing on Fedora with GNOME 3.32 under their default wayland session,
touch events seem to be positioned correctly.
Testing on Disco under the Wayland session touch on the dock and parts
of shell that are on the left of the screen seems to work, but touch-
dragging on the
Sorry, ignore the above, they are wrong. It is a bit more non-trivial
than that.
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset with two screens (even appearing
Untested fix as a PPA:
https://launchpad.net/~vanvugt/+archive/ubuntu/lp1821933
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset with two screens (even appearing
Experimental fix:
https://gitlab.gnome.org/GNOME/mutter/commit/4a06424b9c1de7242cec0613bc1fd53c832d9144.patch
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https://bugs.launchpad.net/bugs/1821933
Title:
Touch input is offset
That would be a consequence of the "touch screen" input device not
having any relation in software to the "screen" output device. They are
very separate things :(
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The problem appears to be that
clutter_input_device_evdev_translate_coordinates has no idea that the
stage might include multiple monitors:
https://gitlab.gnome.org/GNOME/mutter/blob/master/clutter/clutter/evdev
/clutter-input-device-evdev.c#L1509
Sadly I can't see any information that would
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-shell (Ubuntu)
Status: New => Confirmed
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Title:
It sounds like touches are being scaled to stage coordinates instead of
view coordinates. So a touch halfway across the touch screen gets mapped
to a desktop location halfway across all monitors. Just a guess.
** No longer affects: gnome-shell-extension-desktop-icons (Ubuntu)
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You received
No additional scaling is set, everything is 100%.
It does feel like there is some acceleration going on though.
The offset seems consistent to shell, apps and the backdrop. e.g. I
position a window on the right hand screen and I can grab the top of it
by dragging on the left screen.
--
You
More questions:
* From the video it looks like the rubber band moves faster than your
finger. Does it only happen when desktop scaling is >100%?
* Does touch respond in the right place for the shell or apps?
** Summary changed:
- Touch input is misaligned with two screens
+ Touch input is
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