Actually the Mir hack I describe in comment #7 would not work because it
assumes the velocity and acceleration of USC and Unity8 cursors is
identical.

We'll just need to find a way to ensure Unity8 knows some devices are
absolute (which is required for pen tablets in general - see
https://bugs.launchpad.net/mir/+bugs?field.tag=wacom).

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to mir in Ubuntu.
https://bugs.launchpad.net/bugs/1670670

Title:
  Unity8 pointer does not stay in sync with Qemu VM tablet input

Status in Canonical System Image:
  Confirmed
Status in Mir:
  Invalid
Status in mir package in Ubuntu:
  Invalid
Status in qtmir package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  Each time you login, or come back from the lock screen, you need to
  "recalibrate" the pointer by carefully moving the pointer into each
  corner.

  Contrast this with unity7, where the absolute position of the virtual
  tablet pointer is tracked, and sync is never lost.

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