Public bug reported:
I am running kernel 4.3 on Ubuntu 14.04 and as soon as the system boots
up, kworker takes up around 70% of a thread and ksoftirqd takes 30%.
Disabling the responsible interrupt does not help at all, and cron jobs
made to stop the interrupts don't help either. The only solution is to
plug in a USB device in any port, even something like a wireless
receiver for a mouse.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1536766
Title:
14.04 on kernel 4.3: kworker/ksoftirqd consume 100% CPU until a USB
device is plugged in
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