Arch Linux

EJSnow

Member

From: /home/ejsnow

Registered: 2025-04-06

Posts: 9

[SOLVED] Can't power off properly when shutting down from Linux

So I have a kind of weird issue here. When I shut down my computer while its running Linux (I have a Windows 10/Arch Linux dualboot), after it shuts down, my computer APPEARS to have powered off. But then a few seconds later, it turns itself right back on. This does not happen in Windows. Only in Linux. Also this is the same thing that happens when exiting the BIOS configuration (computer appears to completely power off, but then a few seconds later, turns back on of its own accord).

Here's my system specs and configuration if that's helpful to anyone.

CPU: Intel Core i7-4790
System model: Dell OptiPlex 7020 SFF
RAM: 2x Crucial 8GB DDR3-1600 (total of 16GB)
Storage: Crucial MX500 500GB 2.5" SSD (boot drive, has Windows 10 and Arch Linux installed on it) and Western Digital Blue 1TB 5400RPM 2.5" HDD (mass data storage)
GPU: AMD Radeon RX 6400 (primary), and the CPU's iGPU too
Network: Intel I217-LM Gigabit Ethernet (not used), TP-Link Archer TX55E Wi-Fi 6/Bluetooth PCIe card (Intel AX210 chipset)

I was reading on here earlier and saw a couple people had a similar issue (only it was intermittent, while my issue always happens), that was solved for them by turning off Intel Platform Trust Technology (PTT) in the BIOS. I already ransacked my BIOS settings, and could not discover that setting, unless I missed it (my BIOS doesn't seem to have a search function ).

EDIT: I have configured hibernation, but I appear to have done it incorrectly (I hibernated my computer from Arch, but when resuming, it didn't correctly resume, instead booting into a fresh session, which is another issue in and of itself, and probably just me being dumb), however, when hibernating, my computer doesn't turn itself back on a few seconds after turning off.

Last edited by EJSnow (2025-04-17 20:36:47)

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"Sometimes the best things in life are free." - Me, after realizing that Linux is better than Windows for me, and accidentally discovering that pacman is waaaay better than apt

espresso

Member

From: Pale Blue Dot, US

Registered: 2023-05-15

Posts: 62

Re: [SOLVED] Can't power off properly when shutting down from Linux

There are a few things you may have covered but not explicitly mentioned.

A problem only occuring in Linux is usually related to firmware settings, wake devices like Wake On LAN (WOL) that you might disable in BIOS/UEFI, or how Linux interacts with your hardware's ACPI implementation.
https://wiki.archlinux.org/title/Power_ … suspending

Dual booting with Windows: Fast Startup hibernating can interfere with a proper shutdown from Linux.
https://wiki.archlinux.org/title/Dual_b … ibernation

https://wiki.archlinux.org/title/Power_ … _hibernate
This also requires creating enough swap to hold RAM contents; process detailed there.

Let us know how it goes..

EJSnow

Member

From: /home/ejsnow

Registered: 2025-04-06

Posts: 9

Re: [SOLVED] Can't power off properly when shutting down from Linux

I don't have wake-on-LAN enabled (I'm pretty sure) (plus I'm using Wi-Fi to connect to the internet so it wouldn't work anyways), and I did disable fast startup in Windows. Also I solved the hibernation issue. Arch now hibernates and resumes from hibernation correctly. I just needed to add the resume hook to mkinitcpio.conf.

So I think the power off issue is likely related to the way Linux specifically is interacting with ACPI on my system. I've used a couple other Linux distros briefly, and they all seem to have the same issue (after shutting down from Linux, my computer powers back on a few seconds later).

Last edited by EJSnow (2025-04-17 20:37:35)

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"Sometimes the best things in life are free." - Me, after realizing that Linux is better than Windows for me, and accidentally discovering that pacman is waaaay better than apt

EJSnow

Member

From: /home/ejsnow

Registered: 2025-04-06

Posts: 9

Re: [SOLVED] Can't power off properly when shutting down from Linux

Okay, I know I just said I was pretty sure wake-on-LAN was disabled and my problem is related to how Linux interacts with ACPI, but I checked the UEFI firmware just to be sure... and WOL was set to Enabled LAN only. So I changed it to Disabled... and now my computer shuts down correctly. It doesn't make sense, because I'm not using Ethernet at all (there physically is not an Ethernet cabled plugged in to my computer), so theoretically the state of wake-on-LAN shouldn't make a difference. But maybe my firmware does some weird stuff with ACPI power states when WOL is enabled that breaks shutdown in Linux specifically.

Thanks!

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"Sometimes the best things in life are free." - Me, after realizing that Linux is better than Windows for me, and accidentally discovering that pacman is waaaay better than apt