Public bug reported:
Ubuntu version: 24.04.3 LTS (noble)
Kernel: 6.14.0-34-generic (problematic), 6.11.0-29-generic (works)
GPU:
- NVIDIA GA107 [RTX 2050]
- AMD Rembrandt [Radeon 680M]
Session: GNOME Shell 46.2 on Wayland
Problem:
-Secondary monitor (connected to HDMI/DP port) is not detected in
Settings → Display.
-Works correctly in kernel 6.11.
Steps to reproduce:
-Boot Ubuntu 24.04 LTS with kernel 6.14.
-Connect external monitor to HDMI/DP port.
-Open Settings → Display.
-Monitor does not appear.
Expected behavior:
-External monitor should be automatically detected.
Actual behavior:
-Only laptop screen (eDP-1) detected.
-xrandr --listmonitors shows only 1 monitor.
-NVIDIA GPU not loaded; AMD GPU is active (glxinfo shows AMD Radeon
660M).
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-control-center 1:46.7-0ubuntu0.24.04.2
ProcVersionSignature: Ubuntu 6.14.0-33.33~24.04.1-generic 6.14.11
Uname: Linux 6.14.0-33-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 6 14:42:10 2025
InstallationDate: Installed on 2025-02-25 (254 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64
(20240827.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble third-party-packages
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https://bugs.launchpad.net/bugs/2130771
Title:
Dual monitor not detected on Ubuntu 24.04 LTS (kernel 6.14) with
hybrid NVIDIA + AMD GPU
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