Arch Linux

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

[SOLVED] Problematic 6.16 kernel update

Hi,

I have an HP EliteDesk 800 G1 USDT mini PC with Intel(R) Core(TM) i5-4590S CPU on Arch Linux with KDE Plasma.
With kernel 6.15.* (and any previous) everything works fine, but with latest one (6.16), once it passes Booting 'Arch Linux' i get a bunch of dmesg output and everything freezes.
I've managed few times to boot it completly after that freeze, but once I did new update now it refuses to boot fully.
I've uninstalled 6.16 kernel and installed linux-lts and now everything is fine. Same kernel (6.16) on my laptop works without any issues and I cannot see any dmesg outputs during boot whatsoever.

I'd like to have latest kernel available. I can install it again, just tell me what can I give you so you can trace what might be the problem with 6.16 and this PC?
And how can I get any outputs when I cannot get into my KDE Plasma desktop with 6.16 kernel?

Thanx in advance.

Last edited by Cooleech (2025-08-17 05:44:11)

WorMzy

Administrator

From: Scotland

Registered: 2010-06-16

Posts: 13,058

Website

Re: [SOLVED] Problematic 6.16 kernel update

Mod note: moving to Kernel and Hardware.

---

Sakura:-
Mobo: MSI MAG X570S TORPEDO MAX // Processor: AMD Ryzen 9 5950X @4.9GHz // GFX: AMD Radeon RX 5700 XT // RAM: 32GB (4x 8GB) Corsair DDR4 (@ 3000MHz) // Storage: 1x 3TB HDD, 6x 1TB SSD, 2x 120GB SSD, 1x 275GB M2 SSD

Making lemonade from lemons since 2015.

Erwin Iosef

Member

Registered: 2024-05-22

Posts: 83

Re: [SOLVED] Problematic 6.16 kernel update

Can you post the output in a pastebin? Also try the new 16.6.1 kernel in core-testing

Last edited by Erwin Iosef (2025-08-16 18:26:27)

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

Re: [SOLVED] Problematic 6.16 kernel update

Can you post the output in a pastebin? Also try the new 16.6.1 kernel in extra-testing

Unfortunately, I cannot get anything to c/p since I cannot boot it fully. I tried OCR using ChatGPT but it had too many errors reading pictures of my screen tho text is clear enough.

Here are photos uploaded to postimages:

https://postimg.cc/gallery/jnyWpDd

Second screen shows after about 20 seconds or so.

Last edited by Cooleech (2025-08-16 15:14:50)

Erwin Iosef

Member

Registered: 2024-05-22

Posts: 83

Re: [SOLVED] Problematic 6.16 kernel update

I'd try reinstalling the kernel and running mkinitcpio -P, if that didn't work, then try the 16.1 kernel in testing linked(fixed) earlier above, also try updating grub after reinstalling the kernel.

EDIT: According to kernel panic, it occurred when it was loading the e1000e network module(second line, first pic) the kernel is tainted, are you using any outside kernel modules?

Last edited by Erwin Iosef (2025-08-16 18:27:19)

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

Re: [SOLVED] Problematic 6.16 kernel update

I did reinstall it few times, also I updated grub (grub-mkconfig -o ...) after each kernel reinstall as well as removing and then adding intel-ucode (and again grub-mkconfig after uninstall and reinstall of ucode).
I'm not using any outside kernel modules.

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

Re: [SOLVED] Problematic 6.16 kernel update

Oh, and btw since I was stupid enough and didn't follow install guide recommendation, I made EFI partition too small (300 MB), and I made it mount on /boot, not /boot/efi so that everything is on the same partition as far as /boot goes. So now I have to remove initramfs-linux-fallback.img each time I need another kernel (like linux-lts), so removing lts kernel and adding that one from core-testing is actually not making me happy at all.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,995

Re: [SOLVED] Problematic 6.16 kernel update

x-ref: https://bbs.archlinux.org/viewtopic.php?id=307642 and maybe also https://bbs.archlinux.org/viewtopic.php?id=307619
Try to blacklist "intel_oc_wdt"
It's a new module so let's see whether it's cause or indicator here.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

Re: [SOLVED] Problematic 6.16 kernel update

...
Try to blacklist "intel_oc_wdt"
It's a new module so let's see whether it's cause or indicator here.

This did the trick! Thank you!

Now I have 6.16.1 which also gives similar output without this module blacklisted.

Edit 2: new link
https://postimg.cc/BL6CfVmy

Last edited by Cooleech (2025-08-17 05:37:48)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,995

Re: [SOLVED] Problematic 6.16 kernel update

But blacklisting still solves it?
=> https://lkml.org/lkml/2025/3/17/765

https://bugzilla.kernel.org/buglist.cgi … esolution=---
drivers_watchdog@kernel-bugs.osdl.org

And if you don't get response there, mail to linux-watchdog@vger.kernel.org and/or Guenter and Diogo directly

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

Re: [SOLVED] Problematic 6.16 kernel update

Yeah, blacklisting intel_oc_wdt in GRUB solved my problem. I rebooted few times and it acts as any previous kernel - no weird dmesg outputs, just boots normally.

Edit:
I've sent a mail to linux-watchdog@vger.kernel.org (took me few tries until I figured out I need plain text mail). I'm waiting for response.

Last edited by Cooleech (2025-08-17 12:42:21)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,995

Re: [SOLVED] Problematic 6.16 kernel update

Ftr, https://lore.kernel.org/linux-watchdog/ … oa.pt/T/#t - and you're not alone, the thing has shown up A LOT over the weekend.

Edit: the gist of that thread is btw. that a memory corruption has been identified and addressed, so hopefully gone with some future kernel updates.
If it gets too bad we'll need an interim downstream patch.

Last edited by seth (2025-08-18 08:35:38)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

gromit

Administrator

From: Germany

Registered: 2024-02-10

Posts: 1,355

Website

Re: [SOLVED] Problematic 6.16 kernel update

If it gets too bad we'll need an interim downstream patch.

Had a quick chat with heftig and he cherry picked the patch from Guenter (https://lore.kernel.org/linux-watchdog/ … ck-us.net/) into the Arch patchset. It will be available with the next release/rebuild of core/linux.

Cooleech

Member

From: Solin, Croatia

Registered: 2015-01-23

Posts: 32

Re: [SOLVED] Problematic 6.16 kernel update

That's great news, thank you all for your briliant work!
I'm so glad I donated to Arch Linux few weeks before all this happened, you people rule!