I am not sure what changed (I have run apt upgrade a couple of times), but I am no longer having this issue.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1814400 Title: Thinkpad X250 blanks and locks up when removed from the docking station Status in linux package in Ubuntu: Confirmed Bug description: My X250 has worked with the docking station for just over three years but the latest kernel update (4.15.0-45-generic) seems to have broken the ability to undock. To reproduce: 1. Turn the laptop on and log in. 2. Dock the laptop. 3. Undock the laptop. This leaves the computer in an unresponsive state (screen is black, keyboard input of any kind doesn't do anything) and I have to force a shutdown. If the laptop screen dims while docked, the computer also has be force restarted. If you dock the laptop before booting the computer, it doesn't boot and is in the same locked state. moorepants@garuda:~$ lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-45-generic 4.15.0-45.48 ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18 Uname: Linux 4.15.0-45-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: moorepants 2514 F.... pulseaudio /dev/snd/controlC0: moorepants 2514 F.... pulseaudio CurrentDesktop: Unity:Unity7:ubuntu Date: Sat Feb 2 12:24:29 2019 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=00333301-992b-4a3e-a93f-f6ace66eec1d InstallationDate: Installed on 2015-11-14 (1176 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO 20CMCTO1WW ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=180cbbee-84f0-4f5d-8f67-ab39fe37099a ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-45-generic N/A linux-backports-modules-4.15.0-45-generic N/A linux-firmware 1.173.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/19/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET36W (1.15 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CMCTO1WW 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:bvrN10ET36W(1.15):bd06/19/2015:svnLENOVO:pn20CMCTO1WW:pvrThinkPadX250:rvnLENOVO:rn20CMCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X250 dmi.product.name: 20CMCTO1WW dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1814400/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
