kworker constantly using 15/20% of CPU

step-2 · 2014-10-20 17:56:05

Hi everyone

my hardware is macbook air 2013 ,

i recently upgraded to osx 10.10 & it upgraded the firmware ( could be the issue ) ,

tried upgrading to 3.17.1 from testing with no luck .

found this in dmesg :

ACPI Warning: SystemIO range 0x000000000000efa0-0x000000000000efbf conflicts with OpRegion 0x000000000000efa0-0x000000000000efaf (\_SB_.PCI0.SBUS.SMBI) (20140724/utaddress-258)

any help is appreciated .

step-2 · 2014-10-22 14:40:16

anyone ??

patrikjakobsson · 2014-10-22 19:30:48

I have the same problem. I'm going to try to downgrade the firmware but not sure if that is even possible. I'll keep you posted if I find some way to fix this.

patrikjakobsson · 2014-10-22 21:01:06

Seems we're stuck in a loop when searching the ACPI namespace. I'll see if I can patch this.

step-2 · 2014-10-23 14:31:34

patrikjakobsson wrote:

I have the same problem. I'm going to try to downgrade the firmware but not sure if that is even possible. I'll keep you posted if I find some way to fix this.

i don't think firmware downgrading is even possible , if it did , then great ,

i am sure the problem started after upgrading to osx 10.10 , so it's a firmware issue ,

tried downgrading to osx 10.8 with no luck , it's seems the problem in the firmware not the os ,

hope someone help .

hfcpereira · 2014-10-26 08:32:26

Hello!

Disabling the interrupt gpe66 worked for me:

echo disable > /sys/firmware/acpi/interrupts/gpe66

Source: https://bugzilla.kernel.org/show_bug.cgi?id=85881

Hope this helps!

carriage · 2014-10-26 13:56:53

I'm experiencing the exact same problem. Not sure if it started after installing OS X 10.10 or after the last kernel update. Either way, the solution hfcpereira mentioned seems to be effective.

step-2 · 2014-10-26 14:11:37

hfcpereira wrote:

Hello!
Disabling the interrupt gpe66 worked for me:
echo disable > /sys/firmware/acpi/interrupts/gpe66
Source: https://bugzilla.kernel.org/show_bug.cgi?id=85881
Hope this helps!

thanks a lot , that did it ,

but i wonder if it's a permanent solution ?

patrikjakobsson · 2014-10-27 19:09:42

Thanks! Runs like a clock again.

step-2 · 2014-11-01 02:42:26

yep

the problem comes back after a reboot

have to enter the command again

Arch Linux

#1 2014-10-20 17:56:05

kworker constantly using 15/20% of CPU

#2 2014-10-22 14:40:16

Re: kworker constantly using 15/20% of CPU

#3 2014-10-22 19:30:48

Re: kworker constantly using 15/20% of CPU

#4 2014-10-22 21:01:06

Re: kworker constantly using 15/20% of CPU

#5 2014-10-23 14:31:34

Re: kworker constantly using 15/20% of CPU

#6 2014-10-26 08:32:26

Re: kworker constantly using 15/20% of CPU

#7 2014-10-26 13:56:53

Re: kworker constantly using 15/20% of CPU

#8 2014-10-26 14:11:37

Re: kworker constantly using 15/20% of CPU

#9 2014-10-27 19:09:42

Re: kworker constantly using 15/20% of CPU

#10 2014-11-01 02:42:26

Re: kworker constantly using 15/20% of CPU

Board footer