Public bug reported:
My Lenovo ideapad 700-15ISK repeatedly outputs the character '^@' about
twice per second while in a tty. This interferes with the functionality
of the keyboard (the "repeat keys" feature is quickly interrupted and
stopped). Though the '^@' does not print in Unity, the effects are the
same. I can login to Unity fine, but typing passwords is impossible in a
tty.
Additionally, enabled Synaptics touchpad features simply don't work,
including two-finger scrolling and tap to click.
This problem began after upgrading to the first 4.13 kernel. Reverting
to kernel 4.11 fixes these issues, and so does installing the mainline
kernel (v4.16-rc7).
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.13.0-37-generic 4.13.0-37.42~16.04.1
ProcVersionSignature: Ubuntu 4.13.0-37.42~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-37-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Mar 30 00:20:53 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-08-21 (221 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: linux-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1760013
Title:
Problems with Lenovo input devices (keyboard & touchpad)
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