Trackpoint button mappings incorrect for Lenovo T550

[Shevek]

Mouse buttons don't work properly on 2015 Lenovo T550 laptop.

See https://bugs.freedesktop.org/show_bug.cgi?id=88609 for upstream information.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-31-generic 3.16.0-31.43~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-31.43~14.04.1-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: XFCE
Date: Tue Mar 17 23:21:43 2015
InstallationDate: Installed on 2015-03-05 (13 days ago)
InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ross Grady (0iq-ross)]

This is a duplicate of #1431931

[Ross Grady (0iq-ross)]

Problem resolved upstream -- details here: https://bugs.freedesktop.org/show_bug.cgi?id=88609

An easier temporary workaround is to create a file in /etc/modprobe.d/ called psmouse.conf and put the following line in it:

options psmouse proto=imps

Then do sudo update-initramfs -u

I'm hopeful that the patch from freedesktop.org will be backported to Trusty's kernel soon.

[penalvch (penalvch)]

Shevek, thank you for reporting this and helping make Ubuntu better. Could you please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1417450

[Shevek (r-launchpad-anarres-org)]

Fixed in Vivid by kernel patch. Probably this one:

http://linux-kernel.2935.n7.nabble.com/PATCH-v2-0-7-New-Lenovos-2015-touchpads-party-time-td1039495.html