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[Launchpad Bug Tracker <1858484@xxxxxxxxxxxxxxxxxx>]

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Situation:

Description:	Ubuntu 18.04.3 LTS
Release:	18.04

Desktop: XFCE/Xubuntu

Installed HWE kernel 5.0 and HWE xserver.

Attached Wacom tablet "Bamboo Fun CTH-661" in "Relative" mode via
xsetwacom (behaves like a mouse instead of setting pointer to
corresponding tablet position on screen).

Issue:
When setting the pen down fast, the pointer skips notably, as far as 10cm on my 27" display.

Setting the pen down softly it does not occur, but the usual fast motion
I apply when using the tablet it occurs a lot.

It seems like in certain conditions, like going through the threshold at
which the tablet recognizes the pen the value changes too quickly an
overflown value goes into the X axis, but that's wild guess.

Reverting to all: regular 18.04 kernel, xserver and xinput-wacom drivers
the issue does not appear anymore.

Tablet has been working fine for years. HWE is first kernel/X/input
combo that jeopardizes it.

** Affects: xf86-input-wacom (Ubuntu)
     Importance: Undecided
         Status: New

-- 
xserver-xorg-input-wacom-hwe-18.04 pointer skippy
https://bugs.launchpad.net/bugs/1858484
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