Bug 218499 - Intel Corporation Ethernet Controller I226-V - Prevent higher C-States
Summary: Intel Corporation Ethernet Controller I226-V - Prevent higher C-States
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Network (show other bugs)
Hardware: Intel Linux
: P3 normal
Assignee: drivers_network@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-02-16 08:54 UTC by JT
Modified: 2024-09-01 14:42 UTC (History)
1 user (show)

See Also:
Kernel Version: 6.1.64
Subsystem:
Regression: No
Bisected commit-id:

Attachments
Powertop whit Networkcable (47.01 KB, image/png)
2024-02-19 07:43 UTC, JT 		Details
Asus Support Windows with PowerHousemountain (142.54 KB, image/png)
2024-02-19 07:44 UTC, JT 		Details
Add an attachment (proposed patch, testcase, etc.)

Description JT 2024-02-16 08:54:00 UTC 
Hello,

i am currently using Unraid as OS and can't reach any higher C-States then C2/C3 while the Networkcable is pluged in. If i unplug the Network-Cable the system reaches immediately higher C-States (C6-C8) 

Asked the Mainboard Vendor for issue or dependency and Asus told me there are no issues and they can reach higher C-States in Powerhouse Mountain so it should be an Linux issue.

Which Information do you need?

Greetings
JT
Comment 1 JT 2024-02-19 07:43:46 UTC 
Created attachment 305892 [details]
Powertop whit Networkcable

Unraid
Comment 2 JT 2024-02-19 07:44:48 UTC 
Created attachment 305893 [details]
Asus Support Windows with PowerHousemountain
Comment 3 TOMillr 2024-05-29 13:32:51 UTC 
According to creator of powertop, issue is caused by a bug in the kernel driver for the Intel I226-V ethernet network controller.

https://github.com/fenrus75/powertop/issues/143
Comment 4 TOMillr 2024-05-29 13:34:03 UTC 
Can replicate bug on an Odroid H4+ board running Ubuntu Server 24.04 LTS.
Comment 5 TOMillr 2024-09-01 14:42:59 UTC 
Bug still present in new release Ubuntu 24.04.1 LTS. Driver fails when power management is activated.
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