I've tried around a bit and found out that now, the problem occurred
also in 16.04. Not sure if I just didn't try enough before or if the
problems really wasn't there in 16.04 two months ago.
However, I've got the problem solved now. I updated the BIOS and the firmware
using Lenovo system update from Windows and now, the problem is gone. So far,
this works only for PCs with Windows but as recently published, Lenovo plans to
provide native support for Linux for more and more Laptops. Maybe, the E480
will be supported too soon.
Thanks for the support!
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1787782
Title:
Hanging keys on Thinkpad
Status in linux package in Ubuntu:
Fix Released
Bug description:
Under Ubuntu 18.04 the keys of my Thinkpad E480 are hanging very
often. Then, instead of pressed once, the key seems to be not released
and pressed continuously until another key is pressed. I have
described the behavior in more detail under
https://askubuntu.com/questions/1051508/hanging-keys-under-
ubuntu-18-04.
It does not occur when I boot in Windows or Ubuntu 16.04, so it is not
related to the hardware.
It does not occur when I plug in an external keyboard, so it is not related
to general Ubuntu keyboard settings.
It does not occur when the power cable (USB-C) is unplugged, only when t is
plugged in.
/var/log/syslog logs the following when the cable is plugged in:
"kernel: [ 9821.899727] thinkpad_acpi: EC reports that Thermal Table has
changed"
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-32-generic 4.15.0-32.35
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ludwig 1919 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 19 00:21:56 2018
InstallationDate: Installed on 2018-05-02 (108 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 5986:2113 Acer, Inc
Bus 001 Device 002: ID 046d:c046 Logitech, Inc. RX1000 Laser Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20KQS00100
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-32-generic
root=UUID=2ce0f255-4f53-4437-90ad-5e64f5a31b0f ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-32-generic N/A
linux-backports-modules-4.15.0-32-generic N/A
linux-firmware 1.173.1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: r8822be
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/27/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: R0PET30W (1.07 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KQS00100
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrR0PET30W(1.07):bd11/27/2017:svnLENOVO:pn20KQS00100:pvrThinkPadE480:rvnLENOVO:rn20KQS00100:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad E480
dmi.product.name: 20KQS00100
dmi.product.version: ThinkPad E480
dmi.sys.vendor: LENOVO
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