Nexus 4, KitKat 4.4.2: 100% CPU

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zamana

Senior Member
Jul 27, 2010
194
12
São Paulo
Hi!

Sometimes, out of nothing, my Nexus 4 heats and the 2nd core locks down at 100%. The temperatures raises to more than 34 (battery) and 48 (cpu) Celusius.

I tried to kill every application and service, one by one, but none of them changed anything. The only solution is reboot.

Anyone knows what's happening?

Thanks.
Regards.
 

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zamana

Senior Member
Jul 27, 2010
194
12
São Paulo
What are those app icons in the status bar?

Sent From Burning Gundam

Chess.com
AirDroid
AdWay.

AirDroid is not the culprit. It was started just to take the screenshot (my skills to press power and volume down buttons are compromised... ;))

Yes, I'm using stock KitKat 4.2.2.

The last reset was when I installed KitKat...
 

Ace42

Senior Member
Jul 20, 2009
11,352
2,056
USA
Moto G Power
Motorola Edge
Chess.com
AirDroid
AdWay.

AirDroid is not the culprit. It was started just to take the screenshot (my skills to press power and volume down buttons are compromised... ;))

Yes, I'm using stock KitKat 4.2.2.

The last reset was when I installed KitKat...

Why don't you do volume+down for screenshot, android has it built in...And is your phone rooted? If it is can you try greenify then see if CPU usage drops?

Sent From Burning Gundam
 

zamana

Senior Member
Jul 27, 2010
194
12
São Paulo
Even after killing all apps/services with SystemPanel the 2nd core is still at 100% and the CPU is at more than 54 Celsius...

I'll need to reboot.
 

albundy2010

Senior Member
Sep 24, 2010
3,707
2,580
I assume it's the 4.2.2 camera bug that was in the news this week.

I have seen it many times on my Nexus 7.
 

zamana

Senior Member
Jul 27, 2010
194
12
São Paulo
I've finally found out what's causing the problem. It's AdAway.

When it can't download the hosts' file updating, it locks down one core and that's causes the cpu heating.

There is a bug (#476) about this problem.

Thank you everyone who tried to help me.

Regards.
 

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