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On 2015-09-23T17:37:55+00:00 Atdrew wrote:

We had to disable XI2/multidevice support in bug 1170342 due to focus
and scrolling related issues. We should monitor these issues to see if
it would be possible to re-enable XI2 in the future.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/0

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On 2015-10-14T10:00:07+00:00 Kuba Niewiarowski wrote:

Please add option to reenable via about:config or something - I'm really
got used to it...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/1

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On 2015-10-14T10:09:09+00:00 Stransky wrote:

(In reply to Kuba Niewiarowski from comment #1)
> Please add option to reenable via about:config or something - I'm really got
> used to it...

Just set MOZ_USE_XINPUT2=1 env variable which enables it in Firefox.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/2

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On 2015-10-14T10:30:26+00:00 Kuba Niewiarowski wrote:

(In reply to Martin Stránský from comment #2)
> Just set MOZ_USE_XINPUT2=1 env variable which enables it in Firefox.

Not working...
I'm using Aurora builds from 
https://launchpad.net/~ubuntu-mozilla-daily/+archive/ubuntu/firefox-aurora

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/3

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On 2015-10-22T22:03:24+00:00 Anders Kaseorg wrote:

MOZ_USE_XINPUT2=1 is in Nightly (bug 1207973) but not yet in Aurora.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/4

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On 2015-12-22T23:46:58+00:00 Karlt wrote:

*** Bug 1234005 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/5

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On 2017-01-24T18:07:09+00:00 Milakam wrote:

Using "MOZ_USE_XINPUT2=1" &e10s worked for me
(https://bugzilla.mozilla.org/show_bug.cgi?id=1268599#c10), but not very
smooth (scrolling, afterwords opening the menu item, then trying to
scroll results in an un-scrollable page). Fedora already compiles FF
with "MOZ_USE_XINPUT2=1", which is very smooth on my tablet.

However, it would be interesting how this is handled by Firefox for
Android, which clearly needs touch support and XINPUT2.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/6

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On 2017-08-16T00:21:23+00:00 Karlt wrote:

*** Bug 1390130 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/10

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On 2018-01-19T13:00:07+00:00 Stransky wrote:

I think we can enable the XInput2 for recent Gtk+ versions (say Gtk+ >=
3.20) as the related Gtk+ focus bugs was fixed but for XInput2 only.
Also Fedora enables XInput2 by default and we don't have any user
complains.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/11

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On 2018-01-19T13:26:19+00:00 Stransky wrote:

Before the switch we need to address Bug 1182700. Bug 1170342, Bug
1196777 should be fixed for reasonable recent systems.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/12

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On 2018-01-22T14:07:52+00:00 Stransky wrote:

For Bug 1182700 looks like gnome folks gave up
(https://bugzilla.gnome.org/show_bug.cgi?id=750994#c8) and recommend to
use Wayland. I wonder how big complication is it and if benefits from
enabled xinput2 outweigh it, especially when the focus bugs should be
fixed on recent systems.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/13

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On 2018-05-10T03:59:02+00:00 Shu Hung (Koala) wrote:

Gnome issue 750994 has been migrated to their Gitlab instance:
https://gitlab.gnome.org/GNOME/gtk/issues/558

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1697122/comments/14


** Changed in: firefox
       Status: Unknown => Confirmed

** Changed in: firefox
   Importance: Unknown => Medium

** Bug watch added: Mozilla Bugzilla #1268599
   https://bugzilla.mozilla.org/show_bug.cgi?id=1268599

** Bug watch added: bugzilla.gnome.org/ #750994
   https://bugzilla.gnome.org/show_bug.cgi?id=750994

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https://bugs.launchpad.net/bugs/1697122

Title:
  Package Firefox with MOZ_USE_XINPUT2=1 in environment to enable pixel
  scrolling with touchpad and touch gestures

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