HDMI can't display external monitor on HP Zbook Power 15 G9

[Arthur]

Can't use external monitor on HP Zbook Power 15 G9

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42.9-0ubuntu2
ProcVersionSignature: Ubuntu 6.2.0-34.34~22.04.1-generic 6.2.16
Uname: Linux 6.2.0-34-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 9 12:09:29 2023
DisplayManager: gdm3
InstallationDate: Installed on 2023-09-06 (32 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
RelatedPackageVersions: mutter-common 42.9-0ubuntu5
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Thanks for the bug report. While the monitor is plugged in, please run:

  lspci -k > lspci.txt
  grep . /sys/class/drm/*/status > connections.txt
  journalctl -b0 > journal.txt
  sudo apt install drm-info
  drm_info > drminfo.txt

and attach the resulting text files here.

[Arthur (arthursc)]

Maybe it helps:

tailf /var/log/gpu-manager-switch.log

Has amd? no
Has intel? yes
Has nvidia? yes
How many cards? 2
Has the system changed? No
Takes 0ms to wait for nvidia udev rules completed.
Intel IGP detected
NVIDIA hybrid system
Creating /usr/share/X11/xorg.conf.d/11-nvidia-prime.conf
Setting power control to "on" in /sys/bus/pci/devices/0000:01:00.0/power/control

cat /usr/share/X11/xorg.conf.d/11-nvidia-prime.conf
# DO NOT EDIT. AUTOMATICALLY GENERATED BY gpu-manager

Section "OutputClass"
    Identifier "Nvidia Prime"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    Option "AllowEmptyInitialConfiguration"
    Option "IgnoreDisplayDevices" "CRT"
    Option "PrimaryGPU" "Yes"
    ModulePath "/lib/x86_64-linux-gnu/nvidia/xorg"
EndSection

[Daniel van Vugt (vanvugt)]

Thanks. This seems a little different to bug 2036802...

In this case the NVIDIA card (DRM "card1") doesn't have any known ports associated with it. That might be:

 - Correct and all ports are wired to Intel. In that case Intel can't detect anything plugged in.
 - Incorrect and the hardware/BIOS has switched off the NVIDIA card and its ports.
 - Confused by the DisplayLink driver ("evdi") which also creates four virtual graphics cards.

[Arthur (arthursc)]

I'm using now a usb-C hub with HDMI port and works, but HDMI port from laptop still not working.

[Arthur (arthursc)]

Hi again, kernel 6.6 fix this issue. I use this tutorial: https://9to5linux.com/you-can-now-install-linux-kernel-6-6-on-ubuntu-heres-how
 then works fine.

Thank you!