You have been subscribed to a public bug:
When booting my Lenovo E490 with the Lenovo Powered USB-C Travel Hub (a
kind of dock) already attached, the machine crashes after entering
password into the graphical login interface. More precisely the login
does not complete (in a reasonable time frame) and I cannot switch to
another virtual terminal. Some menus can be selected, but there is no
action (e.g. reboot) and I have to do a hard shutdown (pressing the
power button for 4 sec.). The log files show a kernel oops. When
attaching the dock after login the system seems to work normally.
I do have the latest displaylink drivers installed
(www.displaylink.com).
Attached is a log file snippet.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2019-03-25 (483 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
Package: mutter 3.36.3-0ubuntu0.20.04.1
PackageArchitecture: amd64
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Tags: focal
Uname: Linux 5.4.0-40-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev remote sambashare sudo wireshark
_MarkForUpload: True
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-collected focal
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Partial freeze if booting with USB-C dock attached
https://bugs.launchpad.net/bugs/1887914
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