Public bug reported:
1) Description: Ubuntu 24.04.2 LTS
Release: 24.04
2) not sure
3) Expected the monitors to show up as an external display.
4) The monitors are not recognised.
I have a usb-c cable connected a Dell P2422HE monitor and it daisy
chains to another Dell P2422HE monitor via DisplayPort cable. I have
been using this setup for a while.
Right now, no external displays are recognised in ubuntu settings.
Although, I do have a keyboard plugged into the monitor via usb, and
that is being correctly forwarded through the monitor to my laptop.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: xorg 1:7.7+23ubuntu3
ProcVersionSignature: Ubuntu 6.8.0-56.58-generic 6.8.12
Uname: Linux 6.8.0-56-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 30 13:52:41 2025
DistUpgraded: 2025-03-29 17:42:36,771 DEBUG migrateToDeb822Sources()
DistroCodename: noble
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation CometLake-H GT2 [UHD Graphics] [8086:9bc4] (rev 05) (prog-if
00 [VGA controller])
Subsystem: Hewlett-Packard Company CometLake-H GT2 [UHD Graphics] [103c:86e8]
NVIDIA Corporation TU117M [GeForce GTX 1650 Ti Mobile] [10de:1f95] (rev a1)
(prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company TU117M [GeForce GTX 1650 Ti Mobile]
[103c:86e8]
InstallationDate: Installed on 2024-02-27 (397 days ago)
InstallationMedia: Ubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64
(20240220)
MachineType: HP HP Spectre x360 Convertible 15-eb0xxx
ProcEnviron:
LANG=en_GB.UTF-8
LANGUAGE=en_GB:en
PATH=(custom, no user)
SHELL=/bin/bash
XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-56-generic
root=UUID=73058d45-f5f8-41c9-bac3-b6a3bc48d9b8 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to noble on 2025-03-29 (1 days ago)
dmi.bios.date: 11/02/2022
dmi.bios.release: 15.16
dmi.bios.vendor: AMI
dmi.bios.version: F.16
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 86E8
dmi.board.vendor: HP
dmi.board.version: 01.77
dmi.chassis.type: 31
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 1.77
dmi.modalias:
dmi:bvnAMI:bvrF.16:bd11/02/2022:br15.16:efr1.77:svnHP:pnHPSpectrex360Convertible15-eb0xxx:pvr:rvnHP:rn86E8:rvr01.77:cvnHP:ct31:cvrChassisVersion:sku2T980EA#ABU:
dmi.product.family: 103C_5335KV HP Spectre
dmi.product.name: HP Spectre x360 Convertible 15-eb0xxx
dmi.product.sku: 2T980EA#ABU
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.122-1~ubuntu0.24.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 24.2.8-1ubuntu1~24.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20210115-1build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble ubuntu wayland-session
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https://bugs.launchpad.net/bugs/2105430
Title:
monitors not recognised.
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