This solution worked for me. I'm not exactly sure what I disabled, but I'll
take my chances at a broken thing over a core spinning at 100% constantly.
https://bbs.archlinux.org/viewtopic.php?id=184913
1. find out the "gpe" that is causing the bad stuff with something like:
$ grep . -r /sys/firmware/acpi/interrupts/
2. Check for an high value (mine was gpe08 with a value like 200K). Change the
following accordingly. Backup the gpe file..
$ cp /sys/firmware/acpi/interrupts/gpe13 /pathtobackup
3. Create a crontab entry to disable the gpe on reboot:
$ sudo crontab -e
@reboot echo "disable" > /sys/firmware/acpi/interrupts/gpe08
4. To make it work after wakeup from suspend:
$ touch /etc/pm/sleep.d/30_disable_gpe13
$ chmod +x /etc/pm/sleep.d/30_disable_gpe13
$ vim /etc/pm/sleep.d/30_disable_gpe13
4a: Add this as the script in step 4:
#!/bin/bash
case "$1" in
thaw|resume)
echo disable > /sys/firmware/acpi/interrupts/gpe13 2>/dev/null
;;
*)
;;
esac
exit $?
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https://bugs.launchpad.net/bugs/1488426
Title:
High CPU usage of kworker/ksoftirqd
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