commit 293b915fd9bebf33cdc906516fb28d54649a25ac
Author: Oscar Campos <[email protected]>
Date: Tue Jul 18 17:20:36 2017 -0700
Input: trackpoint - assume 3 buttons when buttons detection fails
Trackpoint buttons detection fails on ThinkPad 570 and 470 series,
this makes the middle button of the trackpoint to not being recogized.
As I don't believe there is any trackpoint with less than 3 buttons this
patch just assumes three buttons when the extended button information
read fails.
Signed-off-by: Oscar Campos <[email protected]>
Acked-by: Peter Hutterer <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>
This 2nd need to be merged to ubuntu kernel.
** Changed in: linux (Ubuntu)
Status: New => In Progress
** Changed in: linux (Ubuntu)
Importance: Undecided => Critical
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => AaronMa (mapengyu)
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https://bugs.launchpad.net/bugs/1715271
Title:
Middle button of trackpoint doesn't work
Status in linux package in Ubuntu:
In Progress
Bug description:
Middle button doesn't work on several Thinkpad laptops like E570,
E475, E470, E575 and X1Carbon.
When middle button fails to work, logs show:
psmouse serio2: trackpoint: failed to get extended button data
It fails to read out ext button info via PS2 command.
Almost all the Thinkpad have 3 buttons, so set it to 3 button when it fails
to read button info.
And on Lenovo X1, there is a new version of trackpoint, add this ID
for this new device.
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