| 2019-01-30 14:39:26 |
Jonas Dahlbaek |
description |
Upon upgrading linux-image-generic and linux-header-generic from version 4.15.0.43.45 to version 4.15.0.44.46, my Lenovo Thinkpad T480s no longer works when plugged into its docking station. Symptoms seems similar to those described in https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1811860, but downgrading firmware has no effect.
What I expected to happen: When plugging my laptop into the docking station, the touchpad, keyboard and mouse and responsive, and internal and external displays work.
What happened: When plugging my laptop into the docking station, the touchpad, keyboard and mouse where responsive. External display was black and internal display was frozen. Unplugging the laptop did not have any effect. Hard reboot by holding the power button was required.
After booting into 4.15.0-43-generic and removing linux-image-4.15.0-44-generic and linux-headers-4.15.0-44-generic, the problem disappears.
Should anyone else wish to follow the same steps until the problem is resolved, make sure you do not try to remove the kernel that you are not currently on. That is, do not run the command
sudo apt-get remove linux-image-4.15.0-44-generic linux-headers-4.15.0-44-generic
unless you booted into an older kernel.
Addition info
-------------
$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04
$ apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 4.15.0.44.46
Version table:
4.15.0.44.46 500
500 https://mirror.one.com/ubuntu bionic-security/main amd64 Packages
500 https://mirror.one.com/ubuntu bionic-updates/main amd64 Packages
4.15.0.20.23 500
500 https://mirror.one.com/ubuntu bionic/main amd64 Packages
log entry from /var/log/apt/history.log showing installation of packages that caused the problem:
Start-Date: 2019-01-30 09:54:45
Commandline: aptdaemon role='role-commit-packages' sender=':1.113'
Install: linux-image-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic), linux-headers-4.15.0-44:amd64 (4.15.0-44.47, automatic), linux-headers-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic), linux-modules-extra-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic), linux-modules-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic)
Upgrade: irqbalance:amd64 (1.3.0-0.1, 1.3.0-0.1ubuntu0.18.04.1), linux-headers-generic:amd64 (4.15.0.43.45, 4.15.0.44.46), linux-libc-dev:amd64 (4.15.0-43.46, 4.15.0-44.47), linux-image-generic:amd64 (4.15.0.43.45, 4.15.0.44.46), libasound2-data:amd64 (1.1.3-5ubuntu0.1, 1.1.3-5ubuntu0.2), linux-signed-generic:amd64 (4.15.0.43.45, 4.15.0.44.46), libasound2:amd64 (1.1.3-5ubuntu0.1, 1.1.3-5ubuntu0.2), linux-generic:amd64 (4.15.0.43.45, 4.15.0.44.46)
End-Date: 2019-01-30 09:55:18
log entry from /var/log/apt/history.log showing removal of packages that fixed the problem:
Start-Date: 2019-01-30 14:54:33
Commandline: apt-get remove linux-image-4.15.0-44-generic linux-headers-4.15.0-44-generic
Requested-By: dahlbaek (1000)
Remove: linux-image-4.15.0-44-generic:amd64 (4.15.0-44.47)
End-Date: 2019-01-30 14:54:36 |
Upon upgrading linux-image-generic and linux-header-generic from version 4.15.0.43.45 to version 4.15.0.44.46, my Lenovo Thinkpad T480s no longer works when plugged into its docking station. Symptoms seem similar to those described in https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1811860, but downgrading firmware has no effect.
What I expected to happen: When plugging my laptop into the docking station, the touchpad, keyboard and mouse are responsive, and internal and external displays work.
What happened: When plugging my laptop into the docking station, the touchpad, keyboard and mouse where unresponsive. External display was black and internal display was frozen. Unplugging the laptop did not have any effect. Hard reboot by holding the power button was required.
After booting into 4.15.0-43-generic and removing linux-image-4.15.0-44-generic and linux-headers-4.15.0-44-generic, the problem disappears.
Should anyone else wish to follow the same steps until the problem is resolved, make sure you do not try to remove the kernel that you are currently on. That is, do not run the command
sudo apt-get remove linux-image-4.15.0-44-generic linux-headers-4.15.0-44-generic
unless you booted into an older kernel.
Addition info
-------------
$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04
$ apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 4.15.0.44.46
Version table:
4.15.0.44.46 500
500 https://mirror.one.com/ubuntu bionic-security/main amd64 Packages
500 https://mirror.one.com/ubuntu bionic-updates/main amd64 Packages
4.15.0.20.23 500
500 https://mirror.one.com/ubuntu bionic/main amd64 Packages
log entry from /var/log/apt/history.log showing installation of packages that caused the problem:
Start-Date: 2019-01-30 09:54:45
Commandline: aptdaemon role='role-commit-packages' sender=':1.113'
Install: linux-image-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic), linux-headers-4.15.0-44:amd64 (4.15.0-44.47, automatic), linux-headers-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic), linux-modules-extra-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic), linux-modules-4.15.0-44-generic:amd64 (4.15.0-44.47, automatic)
Upgrade: irqbalance:amd64 (1.3.0-0.1, 1.3.0-0.1ubuntu0.18.04.1), linux-headers-generic:amd64 (4.15.0.43.45, 4.15.0.44.46), linux-libc-dev:amd64 (4.15.0-43.46, 4.15.0-44.47), linux-image-generic:amd64 (4.15.0.43.45, 4.15.0.44.46), libasound2-data:amd64 (1.1.3-5ubuntu0.1, 1.1.3-5ubuntu0.2), linux-signed-generic:amd64 (4.15.0.43.45, 4.15.0.44.46), libasound2:amd64 (1.1.3-5ubuntu0.1, 1.1.3-5ubuntu0.2), linux-generic:amd64 (4.15.0.43.45, 4.15.0.44.46)
End-Date: 2019-01-30 09:55:18
log entry from /var/log/apt/history.log showing removal of packages that fixed the problem:
Start-Date: 2019-01-30 14:54:33
Commandline: apt-get remove linux-image-4.15.0-44-generic linux-headers-4.15.0-44-generic
Requested-By: dahlbaek (1000)
Remove: linux-image-4.15.0-44-generic:amd64 (4.15.0-44.47)
End-Date: 2019-01-30 14:54:36 |
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