PC shuts down after shutdown command and then immediatelly restarts/wakes up

[Mihai Hanor]

PC wakes up after shutdown command (PC is off for 2 seconds then restarts)
Seems to be related to the PC having network connectivity (alx driver).
PC didn't wake up after one attempt while having the network cable removed, and it didn't wake up on a 2nd attempt where modprobe -r alx was ran before shutdown command.

Command cat /sys/module/alx/parameters/enable_wol displays N after system boot and the system behaves like described above with enable_wol set to N.
Some other issue: I've created /etc/modprobe.d/alx.conf with:
options alx enable_wol=1
After reboot, enable_wol is still N. Doing modprobe -r alx, then modprobe alx, enable_wol becomes Y. I'm not sure why that is the case.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: linux-modules-5.13.0-25-generic 5.13.0-25.26
ProcVersionSignature: Ubuntu 5.13.0-25.26-generic 5.13.19
Uname: Linux 5.13.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: mihai 1853 F.... pulseaudio
 /dev/snd/controlC1: mihai 1853 F.... pulseaudio
 /dev/snd/controlC0: mihai 1853 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 16 11:51:58 2022
InstallationDate: Installed on 2022-01-15 (0 days ago)
InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
IwConfig:
 lo no wireless extensions.

 enp5s0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. Z270-Gaming K3
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ro_RO.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-25-generic root=UUID=9e3b6600-8f45-471d-8b72-ae8d58ab1b5f ro quiet splash mitigations=off vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.13.0-25-generic N/A
 linux-backports-modules-5.13.0-25-generic N/A
 linux-firmware 1.201.3
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/09/2018
dmi.bios.release: 5.12
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F9d
dmi.board.asset.tag: Default string
dmi.board.name: Z270-Gaming K3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF9d:bd03/09/2018:br5.12:svnGigabyteTechnologyCo.,Ltd.:pnZ270-GamingK3:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnZ270-GamingK3:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:
dmi.product.family: Default string
dmi.product.name: Z270-Gaming K3
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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