kworker slowing down with periodic ~60% usage of a core after waking up fromsupend/sleep mode

Bug #2085847 reported by Saumyen Kundu
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
New
Undecided
Unassigned

Bug Description

Hi,

I am facing a similar from as in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1255777, i.e., after resuming from suspend mode its one of the core/thread is being used heavily by the kworker process, resulting in freezing in every second. Even when audio or video is played it's stopping.

Please refer to the video and screenshot of the system monitor and top in the following link.
https://www.dropbox.com/scl/fo/rmbzxyrrtfhba2hp5cmk1/AC9hqGbCDCBKzQbSKkeYmxs?rlkey=rpt1k0cr7ak7paa7g47pwxo3v&dl=0

Is there a solution for this.

System details:
Hardware: ThinkPad E14 Gen 6
Processor: Intel Core Ultra 7 155H
OS: Ubuntu 24.02.1 LTS
Kernel: Linux 6.8.0-47-generic
Firmware (BIOS): R2JET37W(1.14)

Thanks and regards,
Saumyen

Tags: noble kworker
tags: added: kworker
Paul White (paulw2u)
affects: ubuntu → linux (Ubuntu)
tags: added: noble
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