Public bug reported:
Ubuntu 26.04 LTS installed a newer HWE kernel, 7.0.0-22-generic, but
the matching prebuilt NVIDIA kernel module package for nvidia-driver-595
is not available in the enabled Ubuntu repositories.
As a result, after a normal system update and reboot, the system booted into
7.0.0-22-generic without a loadable NVIDIA kernel module. GNOME/Wayland fell
back to a degraded display path and the monitor was
only exposed as "None-1" at 1024x768. nvidia-smi failed because it could not
communicate with the NVIDIA driver.
Booting the previous kernel, 7.0.0-15-generic, restores NVIDIA
correctly because linux-modules-nvidia-595-7.0.0-15-generic is
installed.
This appears to be a package publishing / dependency consistency issue
between linux-image-generic-hwe-26.04 and linux-modules-
nvidia-595-generic-hwe-26.04.
System information:
Ubuntu release:
Ubuntu 26.04 LTS
Codename: resolute
GPU:
NVIDIA GeForce RTX 4060 Ti
PCI ID: 10de:2803
Subsystem: Gigabyte Technology Co., Ltd Device 1458:4123
Installed NVIDIA driver:
nvidia-driver-595 595.71.05-0ubuntu0.26.04.1
Current workaround:
Booted back into 7.0.0-15-generic and set GRUB_DEFAULT to:
"Advanced options for Ubuntu>Ubuntu, with Linux 7.0.0-15-generic"
Package state:
linux-image-generic-hwe-26.04:
Installed: 7.0.0-22.22
Candidate: 7.0.0-22.22
linux-image-7.0.0-22-generic:
Installed: 7.0.0-22.22
linux-headers-7.0.0-22-generic:
Installed: 7.0.0-22.22
linux-modules-7.0.0-22-generic:
Installed: 7.0.0-22.22
linux-modules-nvidia-595-generic-hwe-26.04:
Installed: 7.0.0-15.15+2
Candidate: 7.0.0-15.15+2
linux-modules-nvidia-595-7.0.0-15-generic:
Installed: 7.0.0-15.15+2
linux-modules-nvidia-595-7.0.0-22-generic:
Not available from apt-cache policy output
Expected result:
If linux-image-generic-hwe-26.04 is upgraded to 7.0.0-22, the matching
linux-modules-nvidia-595 package for 7.0.0-22 should also be available and
installed, or the kernel upgrade should be held back for
systems using prebuilt NVIDIA modules.
Actual result:
The system installed and booted linux-image-7.0.0-22-generic, but no
matching linux-modules-nvidia-595-7.0.0-22-generic package was available.
NVIDIA failed to load on the new kernel, causing degraded
display output at 1024x768.
Reproduction steps:
1. Use Ubuntu 26.04 LTS with NVIDIA GeForce RTX 4060 Ti and
nvidia-driver-595.
2. Install updates normally.
3. System installs linux-image-generic-hwe-26.04 version 7.0.0-22.22.
4. Reboot into 7.0.0-22-generic.
5. NVIDIA driver does not load.
6. nvidia-smi fails and display falls back to low resolution.
7. Booting previous kernel 7.0.0-15-generic restores NVIDIA.
Relevant observations from the failing boot:
nvidia-smi failed with:
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA
driver.
Display output under the failing kernel was:
None-1 connected primary 1024x768
Journal showed EDID/display-related fallback symptoms:
colord: failed to get edid data: EDID length is too small
gnome-shell: Couldn't find suitable cursor plane format for
/dev/dri/card0, disabling HW cursor
Under the working 7.0.0-15-generic kernel:
nvidia-smi works correctly.
lspci shows:
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nova_core, n
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: xorg (not installed)
ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0
Uname: Linux 7.0.0-15-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat May 30 12:04:33 2026
InstallationDate: Installed on 2026-05-17 (13 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
ProcEnviron:
LANG=zh_CN.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
XDG_RUNTIME_DIR=<set>
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute resolution wayland-session
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https://bugs.launchpad.net/bugs/2154617
Title:
Ubuntu 26.04 HWE kernel updated to 7.0.0-22 without matching linux-
modules-nvidia-595 package, causing NVIDIA display failure
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