Indeed the kernel seems to be crashing in drm graphics code so I'd
recommend trying some newer kernels such as
https://kernel.ubuntu.com/mainline/?C=M;O=D

** Package changed: xorg (Ubuntu) => linux (Ubuntu)

** Tags added: amdgpu dock multimonitor

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/2046802

Title:
  External display stay blank when connected through the docking station
  (HP USB-C Dock G5) but is OK when directly connected

Status in linux package in Ubuntu:
  New

Bug description:
  External display is detected and X believes it is OK as the desktop
  correctly extends to the 2nd monitor but said monitor remains blank.
  It used to work a couple of days ago but I guess some upgrade is the
  cause. I tried to downgrade amd64-microcode and linux-firmware, to no
  avail : dmesg still shows issues with drivers.

  ProblemType: Bug
  DistroRelease: Ubuntu 23.10
  Package: xorg 1:7.7+23ubuntu2
  ProcVersionSignature: Ubuntu 6.5.0-14.14-generic 6.5.3
  Uname: Linux 6.5.0-14-generic x86_64
  ApportVersion: 2.27.0-0ubuntu5
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: pass
  CompositorRunning: None
  CurrentDesktop: XFCE
  Date: Mon Dec 18 12:14:54 2023
  DistUpgraded: 2023-12-18 10:58:52,052 DEBUG Running PostInstallScript: 
'/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
  DistroCodename: mantic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Barcelo [1002:15e7] (rev c5) (prog-if 
00 [VGA controller])
     Subsystem: Hewlett-Packard Company Barcelo [103c:8b5c]
  InstallationDate: Installed on 2023-08-08 (132 days ago)
  InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
  MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']}
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-14-generic 
root=UUID=d29d3432-7c6f-4376-a050-c86365d7b922 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to mantic on 2023-12-18 (0 days ago)
  dmi.bios.date: 04/25/2023
  dmi.bios.release: 2.1
  dmi.bios.vendor: HP
  dmi.bios.version: V78 Ver. 01.02.01
  dmi.board.name: 8B5C
  dmi.board.vendor: HP
  dmi.board.version: KBC Version 53.1D.00
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.ec.firmware.release: 83.29
  dmi.modalias: 
dmi:bvnHP:bvrV78Ver.01.02.01:bd04/25/2023:br2.1:efr83.29:svnHP:pnHPProBook44514inchG10NotebookPC:pvr:rvnHP:rn8B5C:rvrKBCVersion53.1D.00:cvnHP:ct10:cvr:sku852U8ES#UUZ:
  dmi.product.family: 103C_5336AN HP ProBook
  dmi.product.name: HP ProBook 445 14 inch G10 Notebook PC
  dmi.product.sku: 852U8ES#UUZ
  dmi.sys.vendor: HP
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.115-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3.1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-3ubuntu2.4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
  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

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