You have been subscribed to a public bug:
[Impact]
On HP Spectre x360 laptops with Intel UHD Graphics (CometLake-H GT2) + NVIDIA
GTX 1650 Ti (TU117M), running Ubuntu 24.04.3 LTS with proprietary NVIDIA
drivers, external monitors connected via USB-C or HDMI are not detected when
using PRIME on-demand mode. The issue occurs in both Wayland and Xorg sessions.
External displays only work when switching to PRIME NVIDIA-only mode,
which forces all rendering through the dGPU and prevents power savings.
[Steps to reproduce]
Install Ubuntu 24.04.3 LTS on HP Spectre x360 with Intel UHD +
NVIDIA GTX 1650 Ti.
Install proprietary NVIDIA driver via:
sudo ubuntu-drivers autoinstall
Set PRIME mode to on-demand:
sudo prime-select on-demand
Reboot and log in (either Wayland or Xorg).
Connect external monitor via USB-C or HDMI.
[Expected result]
External monitor is detected and can be enabled in Displays settings in PRIME
on-demand mode.
[Actual result]
xrandr --listmonitors only lists the internal display (eDP-1).
xrandr --verbose shows all NVIDIA connectors (DP-1-0, HDMI-1-0,
etc.) as disconnected.
External monitor remains blank.
Switching to NVIDIA-only mode (sudo prime-select nvidia) and rebooting
makes the external monitor work normally.
[Additional information]
Hardware: HP Spectre x360, Intel UHD Graphics (CometLake-H GT2) +
NVIDIA GTX 1650 Ti Mobile
OS: Ubuntu 24.04.3 LTS, kernel version from uname -r
NVIDIA driver version: output of nvidia-smi
lspci:
00:02.0 VGA compatible controller: Intel Corporation CometLake-H GT2 [UHD
Graphics] (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation TU117M [GeForce GTX
1650 Ti Mobile] (rev a1)
sudo lshw -c video shows driver=nvidia for NVIDIA and driver=i915
for Intel.
Firmware updated via fwupdmgr.
[Tags]
nvidia prime external-monitor hybrid-graphics xorg ubuntu-24.04
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: xorg 1:7.7+23ubuntu3
ProcVersionSignature: Ubuntu 6.14.0-27.27~24.04.1-generic 6.14.6
Uname: Linux 6.14.0-27-generic x86_64
.proc.driver.nvidia.capabilities.fabric-imex-mgmt:
DeviceFileMinor: 4323
DeviceFileMode: 256
DeviceFileModify: 1
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX Open Kernel Module for x86_64 570.169 Release
Build (dvs-builder@U22-I3-AE18-31-4) Thu Jun 12 19:38:21 UTC 2025
GCC version: gcc version 13.3.0 (Ubuntu 13.3.0-6ubuntu2~24.04)
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sat Aug 9 21:23:18 2025
DistUpgraded: Fresh install
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 2025-08-09 (0 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
MachineType: HP HP Spectre x360 Convertible 15-eb0xxx
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-27-generic
root=UUID=21227000-2d04-48c7-a84e-904a43a751b2 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
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 25.0.7-0ubuntu0.24.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.4
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: linux-hwe-6.14 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble ubuntu wayland-session
--
External monitor not detected on HP Spectre x360 (Intel UHD + NVIDIA GTX 1650
Ti) in any PRIME mode on Ubuntu 24.04.3
https://bugs.launchpad.net/bugs/2120239
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which is subscribed to linux-hwe-6.14 in Ubuntu.
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