HID: multitouch: Correct ALPS PTP Stick and Touchpad devices ID

Bug #1722719 reported by Kai-Heng Feng on 2017-10-11
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
linux (Ubuntu)
Kai-Heng Feng

Bug Description

Alps touchpad with ID 0x120A + trackpoint will not be used for mass production machines.
Touchpad 0x120A w/o trackpoint still reports it has a trackpoint, this will confuse userspace apps.

Reverts commit fcaa4a07d2a4b541e91da7a55d8b3331f96d1865, so 0x120A device is no longer a MT_CLS_WIN_8_DUAL device.

[Test Case]
Verified on the systems affected with this issue and confirmed that this solution works.

[Regression Potential]
This patch is for a single device in a specific driver.

This bug is used for tracking purposes, please do not triage.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1722719

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
AceLan Kao (acelankao) on 2017-10-11
tags: added: originate-from-1715841 somerville
Kai-Heng Feng (kaihengfeng) wrote :

This bug is for SRU tracking, so apport-collect is not needed.

Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Changed in linux (Ubuntu Xenial):
status: New → Fix Committed

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-xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed-xenial'.

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-xenial
Kai-Heng Feng (kaihengfeng) wrote :

I can confirm hid-multitouch no longer exposes a bogus stick device.

tags: added: verification-done-xenial
removed: verification-needed-xenial
Changed in linux (Ubuntu):
status: Confirmed → Fix Released
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