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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
vivid' to 'verification-done-vivid'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-vivid

** Tags added: verification-needed-wily

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https://bugs.launchpad.net/bugs/1515503

Title:
  Need support for some buggy Synaptics RMI4 device

Status in HWE Next:
  Triaged
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Vivid:
  Fix Committed
Status in linux source package in Wily:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released

Bug description:
  [Impact]

  Some RMI4 touchpad doesn't work properly even the probing returns no
  error. Further investigation shows the interrupt doesn't increase at
  all. There's already a public bug and the patch is already upstreamed:

  https://bugs.freedesktop.org/show_bug.cgi?id=91102

  [Fix]

  There's a fix contains in v4.3-rc1 and has already been tested:

  commit 9a98b3387e7bd9af5a6495b32e07d6f25071f4ba
  Author:     Andrew Duggan <aduggan@xxxxxxxxxxxxx>
  AuthorDate: Thu Jul 16 17:14:00 2015 -0700
  Commit:     Jiri Kosina <jkosina@xxxxxxxx>
  CommitDate: Fri Jul 17 11:29:53 2015 +0200

      HID: rmi: Set F01 interrupt enable register when not set

  Note:
    So far the platform we encounter with this issue use GPIO interrupt, so it also needs 3.19.0-32 or Wily kernel to work too.

  [Test]

  1. Boot with v4.3-rc1 -> pass
  2. Boot with patched Vivid kernel -> pass
  3. Boot with patched Wily kernel -> pass

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