Public bug reported:
Environment:
• OS: Ubuntu 26.10
• Kernel version: 7.3.0-8-generic #8-Ubuntu SMP PREEMPT_DYNAMIC
• Hardware: ASUS VivoBook X580GD Laptop (Intel i7-8750H / NVIDIA GTX 1050
Mobile)
• BIOS Version: X580GD.324 (01/27/2021)
Description:
Since upgrading to the 7.x kernel series (around mid-July 2026), the system
suffers from hang/timeout during every shutdown or reboot sequence.
By removing quiet splash and enabling debug logging (loglevel=7
systemd.log_level=debug systemd.log_target=console), the exact blocking point
was captured on screen.
Systemd-shutdown successfully unmounts all filesystems, deactivates encrypted
swap wrappers (cryptswap), and detaches loop devices normally. However, it
hangs immediately after forking the fwupd.shutdown script.
Steps to reproduce:
1. Boot Ubuntu 26.10 with kernel 7.3.0-8-generic.
2. Issue a shutdown or reboot command (sudo poweroff or sudo reboot).
3. The system clears userspace and unmounts drives instantly, but blocks for a
while on the screen.
Console Log Capture at Freeze Point:
All filesystems, swaps, loop devices, MD devices and DM devices detached.
Successfully forked off '(systemd-shutdown)' as PID 8667.
About to execute /usr/lib/systemd/system-shutdown/fwupd.shutdown
Successfully forked off '(exec-inner)' as PID 8668.
[=== STUCK HERE ===]
'/usr/lib/systemd/system-shutdown/fwupd.shutdown' succeeded.
'(systemd-shutdown)' succeeded.
Successfully forked off '(sd-sync)' as PID 8675.
Syncing filesystems and block devices.
...
Rebooting.
Root Cause & Workaround:
The block device and cryptographic layer shutdown sequences are
completely cleared. The issue is a regression in the kernel's ability to
handle late low-level UEFI NVRAM runtime writes (efivars) initiated by
fwupd on this specific generation of ASUS motherboards. The kernel fails
to respond to the subsystem call, triggering a hard 60-second I/O
timeout before releasing the process.
Confirmed Workaround:
Disabling the executable bit or masking the systemd-shutdown hook completely
resolves the issue, bringing the shutdown time back to under 3 seconds:
sudo chmod -x /usr/lib/systemd/system-shutdown/fwupd.shutdown
ProblemType: Bug
DistroRelease: Ubuntu 26.10
Package: linux-image-7.3.0-8-generic 7.3.0-8.8
ProcVersionSignature: Ubuntu 7.3.0-8.8-generic 7.3.0-rc5
Uname: Linux 7.3.0-8-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.36.0-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sylvain 4240 F.... wireplumber
/dev/snd/seq: sylvain 4223 F.... pipewire
CasperMD5CheckResult: unknown
CurrentDesktop: GNOME
Date: Fri Oct 2 16:36:30 2026
HibernationDevice: RESUME=/dev/mapper/cryptswap
MachineType: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop X580GD_NX580GD
ProcFB: 0 i915drmfb
ProcKernelCmdLine: root=UUID=cfea31bb-ea51-446c-9fe2-39406bbd3db7 ro quiet
splash rd.luks.name=f3500579-c528-474c-90f1-5c8ac7a3f086=cryptswap
resume=/dev/mapper/cryptswap hibernate=allow_locked_down
initrd=boot\initrd.img-7.3.0-8-generic
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/27/2021
dmi.bios.release: 5.13
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X580GD.324
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X580GD
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrX580GD.324:bd01/27/2021:br5.13:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX580GD_NX580GD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX580GD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaVivoBook:
dmi.product.family: VivoBook
dmi.product.name: VivoBook_ASUSLaptop X580GD_NX580GD
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug fwupd stonking wayland-session
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https://bugs.launchpad.net/bugs/2169304
Title:
Regression: systemd-shutdown hangs for 60s at fwupd.shutdown hook
under kernel 7.3 (ASUS X580GD)
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