This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1998589
Title:
Ubuntu shows black screen after boot, when connected to external
monitor
Status in linux package in Ubuntu:
Confirmed
Bug description:
Ubuntu shows black screen after boot, when connected to external monitor
through docking station.
Thinkpad e14 gen 2. Closed lid. When detached from docking station, and lid
opened Ubuntu still showing blank screen even on internal monitor. There is no
possibility to switch to terminal.
Closing and opening lid don't fix the issue.
The only option is to hard restart laptop while detached from docking
station, and connect to it after logging in to the system.
I didn't have the problem month ago. Some update probably caused it.
Docking station - ThinkPad USB-C Dock Gen 2 (40AS).
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-53-generic 5.15.0-53.59
ProcVersionSignature: Ubuntu 5.15.0-53.59-generic 5.15.64
Uname: Linux 5.15.0-53-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: as 5816 F.... pulseaudio
/dev/snd/controlC1: as 5816 F.... pulseaudio
/dev/snd/controlC0: as 5816 F.... pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Dec 2 10:10:31 2022
InstallationDate: Installed on 2020-12-06 (725 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
MachineType: LENOVO 20T6000TPB
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-53-generic
root=UUID=a5796f3d-37a8-428b-aa28-c160ea77bc9b ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-5.15.0-53-generic N/A
linux-backports-modules-5.15.0-53-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu3.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/06/2021
dmi.bios.release: 1.16
dmi.bios.vendor: LENOVO
dmi.bios.version: R1AET40W (1.16 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20T6000TPB
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.16
dmi.modalias:
dmi:bvnLENOVO:bvrR1AET40W(1.16):bd09/06/2021:br1.16:efr1.16:svnLENOVO:pn20T6000TPB:pvrThinkPadE14Gen2:rvnLENOVO:rn20T6000TPB:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20T6_BU_Think_FM_ThinkPadE14Gen2:
dmi.product.family: ThinkPad E14 Gen 2
dmi.product.name: 20T6000TPB
dmi.product.sku: LENOVO_MT_20T6_BU_Think_FM_ThinkPad E14 Gen 2
dmi.product.version: ThinkPad E14 Gen 2
dmi.sys.vendor: LENOVO
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