[Bug 1887914] Re: Partial freeze if booting with USB-C dock attached

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

** Changed in: linux (Ubuntu)
Status: Incomplete => Expired

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Title:
Partial freeze if booting with USB-C dock attached

Status in linux package in Ubuntu:
Expired

Bug description:
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.
---
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
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: leo 1928 F.... pulseaudio
/dev/snd/controlC1: leo 1928 F.... pulseaudio
/dev/snd/controlC0: leo 1928 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2019-03-25 (484 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
MachineType: LENOVO 20N8CTO1WW
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/@focal/boot/vmlinuz-5.4.0-40-generic root=UUID=cbee37f5-8d6e-4d54-a71d-cd0f24de1427 ro rootflags=subvol=@focal quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
RelatedPackageVersions:
linux-restricted-modules-5.4.0-40-generic N/A
linux-backports-modules-5.4.0-40-generic N/A
linux-firmware 1.187.1
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
dmi.bios.date: 06/15/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: R0YET44P (1.27 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20N8CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrR0YET44P(1.27):bd06/15/2020:svnLENOVO:pn20N8CTO1WW:pvrThinkPadE490:rvnLENOVO:rn20N8CTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad E490
dmi.product.name: 20N8CTO1WW
dmi.product.sku: LENOVO_MT_20N8_BU_SMB_FM_ThinkPad E490
dmi.product.version: ThinkPad E490
dmi.sys.vendor: LENOVO

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