Linux Power reduction Intel NIC I226-V blocking higher C-States

[Hiron]

Good day,

i am Using an Asus Rog Strix B760-I Mainboard with an Intel NIC I226-V NIC which prevents higher C-States under Linux.

If the Network cable is unplugged immediately the system can reach C6-C10 otherwise the system is stuck at C2-C3.

CPU Intel 12100 

Mainboard Asus Rog Strix B760

OS: Unraid 

Kernel: 6.1.79

Asus support did some testing with Windows and could reach C10 so it looks like that the Linux drive may be the issue.

Greetings

[Simon-Intel]

Hi Hiron,

Thank you for reaching out to the Intel community. We acknowledge receipt of your concern and want to assure you that assisting you is our top priority. To effectively troubleshoot the issue you're facing, we require some additional information from you.

Could you kindly provide the following details?

1. Is the Ethernet card embedded on the board?
2. A link to the driver currently in use.

Your prompt response with this information will greatly assist us in diagnosing and resolving the issue as quickly as possible.

We look forward to hearing from you soon.

Best regards,

Simon

[Hiron]

Hey Simon,

yes the NIC is embedded on the Mainboard.

04:00.0 Ethernet controller: Intel Corporation Ethernet Controller I226-V (rev 06)
Subsystem: ASUSTeK Computer Inc. Device 8867
Flags: bus master, fast devsel, latency 0, IRQ 18, IOMMU group 15
Memory at 81c00000 (32-bit, non-prefetchable) [size=1M]
Memory at 81d00000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] MSI-X: Enable+ Count=5 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number e8-9c-25-ff-ff-6a-e9-98
Capabilities: [1c0] Latency Tolerance Reporting
Capabilities: [1f0] Precision Time Measurement
Capabilities: [1e0] L1 PM Substates
Kernel driver in use: igc
Kernel modules: igc

The driver which is in use is from the OS (Unraid Version 6.12.10)

Thx for your help.

Greetings

Justin

[IntelSupport]

Hello Hiron,

Thank you for confirming the details asked.

As we see that the Ethernet card was embedded with the system board, we would request you to contact the OEM for further assistance.

We greatly appreciate your understanding!

Thanks & Regards

Arun

[Hiron]

Hey Arun,

thanks for you response but they won't develop a driver for Linux systems.

Greetings

Justin

[Simon-Intel]

Hi Hiron,

Good Day!

We wanted to let you know that since the Ethernet card is embedded on the board, there may be custom BIOS and drivers provided by the OEM/Manufacturer. Therefore, we kindly request you to contact the OEM/Manufacturer, as they are best equipped to troubleshoot your issue.

Regards,

Simon

[Simon-Intel]

Hello Hiron,

Thank you for contacting Intel.

This is the first follow-up regarding the issue you reported to us.

We wanted to inquire whether you had the opportunity to review our previous message.

Feel free to reply to this message, and we'll be more than happy to assist you further.

Regards,

Simon

[Simon-Intel]

Hi Hiron,

Greetings for the day!

We would like to inform you that we are closing this request as no response has been received from our previous follow-ups. 

Please don't hesitate to ask any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Regards,

Simon