kernel-packages team mailing list archive

[AceLan Kao <1488426@xxxxxxxxxxxxxxxxxx>]

lpuser, 
I don't think you have the same symptom as mine. The symptom is that just boot up the machine and observe the cpu loading from 'top'. I don't need to do anything or open any apps to encounter this issue.

But your perf report is very similar to mine, you can try to plug USB
devices in all USB ports on your machine and see if it helps.

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https://bugs.launchpad.net/bugs/1488426

Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress

Bug description:
  kworker consuming 71.5% cpu resource
  ksoftirqd consuming 28.9% cpu resource

  It leads to power consumption issue and sometimes leads to BT does not
  work.

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