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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1746002
Title:
TrackPoint: middle button doesn't work on TrackPoint-compatible
device.
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
Lenovo introduced 4 new TrackPoint compatible sticks those only
support the minimum commands described in the spec, which has been
used in the current Windows driver.
Legacy TrackPoint: 0101 – 0E01
ALPS: 0102 – FF02
ELAN:0103 – FF03
NXP: 0104 – FF04
TrackPoint (ID: 01/02) report 0 button when reading the EXT_BUTTON
command.
Setting middle button enabled to make it work.
Upstream patch:
commit f5d07b9e98022d50720e38aa936fc11c67868ece
Author: Aaron Ma <aaron...@canonical.com>
Date: Fri Jan 19 09:43:39 2018 -0800
Input: trackpoint - force 3 buttons if 0 button is reported
Lenovo introduced trackpoint compatible sticks with minimum PS/2 commands.
They supposed to reply with 0x02, 0x03, or 0x04 in response to the
"Read Extended ID" command, so we would know not to try certain extended
commands. Unfortunately even some trackpoints reporting the original IBM
version (0x01 firmware 0x0e) now respond with incorrect data to the "Get
Extended Buttons" command:
thinkpad_acpi: ThinkPad BIOS R0DET87W (1.87 ), EC unknown
thinkpad_acpi: Lenovo ThinkPad E470, model 20H1004SGE
psmouse serio2: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 0/0
Since there are no trackpoints without buttons, let's assume the
trackpoint
has 3 buttons when we get 0 response to the extended buttons query.
Signed-off-by: Aaron Ma <aaron...@canonical.com>
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=196253
Cc: sta...@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
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