Power management bug in I226-V Linux kernel driver

[TOMillr]

Hello,

I've noticed that there's a bug in the Ubuntu 24.04 Linux kernel driver in for the I226-V ethernet controller. The device crashes, when a user tries to utilize power management capabilities of the hardware.

The devs of popular power management tool powertop has also acknowledged this bug on Github. Same for the manufacture of the Odroid H4 devices.

There's an open bug report from February 2024 over on Bugzilla referring to the same issue, but it has yet to be fixed. 

Best

[Azeem_Intel]

Hello TOMillr,

Thank you for contacting Intel.

I hope you are doing well. Could you please share a snapshot of the defective part with the serial number visible? Additionally, please let us know if this product was purchased separately or with the machine.

Please do not hesitate in contact us, we are more than glad to assist you.

Best Regards,

Azeem_Intel

[TOMillr]

Hello Azeem,

thanks for getting back to me.

The ethernet controller is build into the Odroid H4+ and Odroid H4 Ultra single board computers made by Hardkernel.

https://www.hardkernel.com/shop/odroid-h4-plus/
https://www.hardkernel.com/shop/odroid-h4-ultra/

Best

Thomas

[Simon-Intel]

Hi TOMillr,

Good Day!

As you confirmed the ethernet controller is embedded on the board, there may be custom BIOS and drivers from the OEM/Manufacturer. Hence we kindly request you to contact the OEM/ Manufacturer as they are best equipped to troubleshoot your issue.

Thank you for your understanding.

Regards,

Simon

Intel customer support

[TOMillr]

Thanks for the suggestion, I have to contradict you however. 

The issue exists across multiple boards made by different manufacturers and is caused by the official driver that ships with the current Linux kernel. It seems to happen on ALL boards that use two or more ethernet ports I226-V ethernet controller.

I've already spoken to OEM/manufactures like Hardkernel or Asus as well as the maintainer of the powertop power management utility and they all point the finger back to the official Intel driver. That's why I've referenced the bug report over on Bugzilla in my initial post, which so far has gone unnoticed.

[TOMillr]

Anyone?

[TOMillr]

Bug still haven't been fixed with new release of Ubuntu 24.04.1 LTS.

[TOMillr]

The I226-V network adapter still crashes Linux systems that try to enable higher power saving modes. Is this maybe related to oft-reported EEE-issue that causes random disconnects on systems using the I226-V adapter?

[Rasped]

I can confirm this bug is present on my PCs (multiple n100 mini PCs with i226-v NICs)

They are made by CWWK

[RvS]

Same problem here. Fresh install Ubuntu 24.04.01. Run powertop --auto-tune --calibrate and the sytem becomes unresponsive and requires a reboot using power button.

[TOMillr]

I've opened a service request regarding this issue. Please feel free to do the same and refer to ticket number #06422119. The more people report this issue, the higher the change we might finally get a fix for this.

Online Service Request 

[DaanSelen]

I also created the ticket.

https://supporttickets.intel.com/s/requestdetail?caseID=500KZ000005ufqdYAA&language=en_US