Public bug reported:
After unattended-upgrade installed linux-image-7.0.0-27-generic on 2026-06-27,
this system
began hard-freezing with no clean shutdown and no panic in the journal. The
prior kernel,
7.0.0-22-generic, is currently being tested as a workaround.
Hardware:
- ASUS ROG STRIX X670E-A GAMING WIFI, BIOS 3603 03/09/2026
- AMD Ryzen platform
- Dual NVIDIA GeForce RTX 4090
- GNOME Wayland session
Kernel/driver:
- Bad kernel: 7.0.0-27-generic
- Previously stable kernel: 7.0.0-22-generic
- NVIDIA driver: 595.71.05, nvidia-driver-595-open
- Kernel cmdline: pcie_aspm=off quiet splash
Timeline:
- 2026-06-27 06:14-06:15: unattended-upgrade installed 7.0.0-27
- 2026-06-27 08:06:35: first post-update boot froze; journal stopped abruptly
- 2026-06-27 16:13:40: second boot froze; journal stopped abruptly
- No systemd shutdown records for the failed boots
Relevant warning on affected boot:
Unpatched return thunk in use. This should not happen!
WARNING: arch/x86/kernel/cpu/bugs.c:3736 at __warn_thunk
Call trace includes:
warn_thunk_thunk
nvidia_init_module+0x29/0x740 [nvidia]
Negative evidence:
- No OOM, kernel panic, MCE, NVMe I/O error, SMART media error, thermal trip,
or watchdog
trace found.
- NVMe SMART passed: media errors 0, error log entries 0.
- Temperatures after reboot were not alarming.
A later, separate GNOME Shell crash after reboot produced repeated:
NVRM: VM: invalid mmap context
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-27-generic 7.0.0-27.27
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Jun 27 17:12:43 2026
InstallationDate: Installed on 2024-07-15 (713 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
MachineType: ASUS System Product Name
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/zsh
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB:
0 nvidia-drmdrmfb
1 nvidia-drmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic
root=UUID=5e50224a-2fb6-4607-84e3-9d99dee45bcb ro pcie_aspm=off quiet splash
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-04-24 (65 days ago)
dmi.bios.date: 03/09/2026
dmi.bios.release: 36.3
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3603
dmi.board.asset.tag: Default string
dmi.board.name: ROG STRIX X670E-A GAMING WIFI
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr3603:bd03/09/2026:br36.3:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGSTRIXX670E-AGAMINGWIFI:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: ASUS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2158539
Title:
7.0.0-27-generic hard freezes with NVIDIA 595 open module;
__warn_thunk warning in nvidia_init_module
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