With the recent kernel update yesterday (4.15.0-42), I am encountering complete system freezes related to the Lenovo docking station:
1) When I boot while docked, I get stuck at black screen late in boot sequence (after typing in disk decryption passphrase)
2) If I dock after boot, and undock the system freezes
3) If I dock after boot, and switch to external screen only (Win+P) the system freezes
I am running Ubuntu 18.04 LTS on a Lenovo T460s and I have previously been experiencing the bug reported below on Ubuntu 16.04, which was fixed after reinstalling with Ubuntu 18.04 (and to later kernel versions as described in the issue thread).
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1614513
It might be likely that this bug was reintroduced in kernel 4.15.0-42.
I have attached kernel log relevant to the system freeze in 3) above.
This is a work computer and I apologies if I cannot be helpful with testing out various kernels for you, but maybe someone else in the community is experiencing similar issues that is able to test kernel patches to fix this issue.
Best regards
Christian
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ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: csh 1632 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=c372b441-6feb-4136-b845-cc68ad64dff2
InstallationDate: Installed on 2018-11-12 (78 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: LENOVO 20F9003VMD
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-44-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-44-generic N/A
linux-backports-modules-4.15.0-44-generic N/A
linux-firmware 1.173.2
Tags: bionic
Uname: Linux 4.15.0-44-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/30/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: N1CET36W (1.04 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20F9003VMD
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40705 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1CET36W(1.04):bd12/30/2015:svnLENOVO:pn20F9003VMD:pvrThinkPadT460s:rvnLENOVO:rn20F9003VMD:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T460s
dmi.product.name: 20F9003VMD
dmi.product.version: ThinkPad T460s
dmi.sys.vendor: LENOVO
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1813924
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.