** Changed in: linux-oem (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1868581
Title:
[DELL][BIONIC] Freeze after docking station disconnect
Status in linux-oem package in Ubuntu:
Fix Released
Bug description:
Problem description
-------------------
When I disconnect my Dell Latitude 5501 laptop from its Dell WD19 docking
station, the screens layout doesn't switch back to single-screen, and the
system either:
* freezes immediately (desktop background still displayed, but no mouse, no
keyboard)
* doesn't freeze. In that case, if I open a terminal and sudo poweroff, the
screen turns black, then the system freezes.
In both cases, the only recovery method consists in a hard reset.
Hardware setup description
--------------------------
Laptop is connected to docking station via thunderbolt port.
The WD19 docking station is connected to 2 external screens via
display ports + USB3 cables (to connect to the embedded USB3 ports on
the screens).
One of the screens is connected to a keyboard and a mouse via USB.
Technical info
--------------
See attached file kern.log for a disconnect (see at Mar 23 15:35:56).
The problem does not happen on older kernel 4.15.0-1073-oem, so it
looks like a regression introduced between 4.15.0-1074-oem and
4.15.0-1076-oem.
Laptop BIOS version is up-to-date (v1.6.1).
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-1076-oem 4.15.0-1076.86
ProcVersionSignature: Ubuntu 4.15.0-1076.86-oem 4.15.18
Uname: Linux 4.15.0-1076-oem x86_64
ApportVersion: 2.20.9-0ubuntu7.12
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gvindry 2492 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 23 15:42:42 2020
DistributionChannelDescriptor:
# This is the distribution channel descriptor for the OEM CDs
# For more information see
http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-bionic-amd64-20180608-47+brookhollow+X77
InstallationDate: Installed on 2019-12-28 (86 days ago)
InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary
20180608-09:38
MachineType: Dell Inc. Latitude 5501
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-1076-oem
root=UUID=d829dfff-8fb3-46f6-8175-92de7a872776 ro mem_sleep_default=deep quiet
splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-1076-oem N/A
linux-backports-modules-4.15.0-1076-oem N/A
linux-firmware 1.173.16
SourcePackage: linux-oem
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 11/14/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.6.1
dmi.board.name: 0Y8H01
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.6.1:bd11/14/2019:svnDellInc.:pnLatitude5501:pvr:rvnDellInc.:rn0Y8H01:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 5501
dmi.sys.vendor: Dell Inc.
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