I know, for sure, it is not the cable or adapter that is the issue. I plug in a different laptop (running Windows) and it works.
Thus, as you mention, likely kernel/driver/BIOS problem. Would you be able to advise? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.14 in Ubuntu. 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 linux-hwe-6.14 package in Ubuntu: Incomplete Status in nvidia-graphics-drivers-570 package in Ubuntu: Incomplete 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.14/+bug/2120239/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
