You have been subscribed to a public bug:
External monitor connected with HDMI goes black when cable is
disconnected and reconnected.
Same thing happens when the screen saver kicks in.
Gnome still thinks that there is an external monitor and an extended
desktop, but the external monitor is black.
Work-around:
Disconnect the HDMI cable, reboot and then connect HDMI.
This is probably a duplicate of bug #1992563.
I tried to run "apport-collect 1992563" bug but was rejected.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 5.15.0-58.64-generic 5.15.74
Uname: Linux 5.15.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sat Jan 21 11:46:00 2023
DistUpgraded: 2022-04-30 16:34:04,182 DEBUG Running PostInstallScript:
'/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
DistroCodename: jammy
DistroVariant: ubuntu
DkmsStatus:
virtualbox/6.1.38, 5.15.0-57-generic, x86_64: installed
virtualbox/6.1.38, 5.15.0-58-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation CometLake-H GT2 [UHD Graphics] [8086:9bc4] (rev 05) (prog-if
00 [VGA controller])
Subsystem: Lenovo CometLake-H GT2 [UHD Graphics] [17aa:22c2]
InstallationDate: Installed on 2020-11-28 (783 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
MachineType: LENOVO 20TH001EMX
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=C
SHELL=/usr/bin/fish
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-58-generic
root=UUID=fe3b788b-eaf4-4f94-b43a-4cbc16309a90 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to jammy on 2022-04-30 (265 days ago)
dmi.bios.date: 10/27/2022
dmi.bios.release: 1.26
dmi.bios.vendor: LENOVO
dmi.bios.version: N2VET41W (1.26 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20TH001EMX
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T08861 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.11
dmi.modalias:
dmi:bvnLENOVO:bvrN2VET41W(1.26):bd10/27/2022:br1.26:efr1.11:svnLENOVO:pn20TH001EMX:pvrThinkPadP1Gen3:rvnLENOVO:rn20TH001EMX:rvrSDK0T08861WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20TH_BU_Think_FM_ThinkPadP1Gen3:
dmi.product.family: ThinkPad P1 Gen 3
dmi.product.name: 20TH001EMX
dmi.product.sku: LENOVO_MT_20TH_BU_Think_FM_ThinkPad P1 Gen 3
dmi.product.version: ThinkPad P1 Gen 3
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.110-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 22.0.5-0ubuntu0.3
version.libgl1-mesa-glx: libgl1-mesa-glx 22.0.5-0ubuntu0.3
version.xserver-xorg-core: xserver-xorg-core 2:21.1.3-2ubuntu2.5
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy ubuntu
--
LSPCON failure
https://bugs.launchpad.net/bugs/2003608
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