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[Bug 2120239] [NEW] External monitor not detected on HP Spectre x360 (Intel UHD + NVIDIA GTX 1650 Ti) in any PRIME mode on Ubuntu 24.04.3

 

Public bug reported:

[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: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug noble ubuntu wayland-session

-- 
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https://bugs.launchpad.net/bugs/2120239

Title:
  External monitor not detected on HP Spectre x360 (Intel UHD + NVIDIA
  GTX 1650 Ti) in any PRIME mode on Ubuntu 24.04.3

Status in xorg package in Ubuntu:
  New

Bug description:
  [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

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