Ubuntu 16.4.3 LTS update makes trackpoint erratic

[Keith Wannamaker]

The latest reboot brought new software which has wrought terror on my Trackpoint.
The behavior is that the trackpoint begins behaving as if one is holding the middle trackpad button - instead of trackpoint inputs causing expected mouse pointer movement, windows switch, windows scroll. I've seen erratic pasting as well. Once entered into this mode, the only way to return to normal is to left or right click - in the trackpad (left click on the buttons above the trackpad don't help). Then you are safe for the next 15-20 seconds until another faux-middle button press happens.

This behavior is totally new with an update sometime in the last 2-3 weeks (I don't often reboot).

Lenovo T470

[Joseph Salisbury (jsalisbury)]

Does this issue go away if you boot back into the last kernel version?

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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 1736253

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.

[Keith Wannamaker (wannamak)]

Booted back to 4.10.0-37-generic and the problem seems to have gone away. This was 2 kernels ago. I will try -38, the intermediate version, and report back.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]