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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Jolla1 & TOH (https://talk.maemo.org/forumdisplay.php?f=56)
-   -   Jolla battery life greatly affected by an NFC bug (https://talk.maemo.org/showthread.php?t=92130)

IlkkaP 2013-12-23 10:10
Jolla battery life greatly affected by an NFC bug
 
Here is a very interesting blog
http://reviewjolla.blogspot.fi/2013/...nsumption.html

Basically, NFC is always switched on and it should be switched on only when the back cover is removed. According to the blog, the forthcoming bug fix could increase idle battery life from around 48 hours to near 500 hours.

This bug was found & analysed by Jolla community. I don't know any other phone maker where the paying customers are so deeply involved in product development & testing... great testament to Jolla community!

Update/Clarification:It has been tentatively confirmed (as per the blog above) that Jolla idle state battery consumption will decrease from 2 % per hour to 0.2 % per hour when tohd service is stopped (giving maximum battery life of up to 100 / 0.2 % = 500 hours).

It is not confirmed that removing The Other Half, removing the NFC label from The Other Half, or inserting a tin foil between the NFC reader and the NFC label has any effect on battery consumption.

Update 2: The blog mentioned above contains step-by-step instructions for stopping the service... and according to the blog, the "hardware method" (a.k.a. DIY tinfoil) works, too.

jsiren 2013-12-23 10:28
Re: Jolla battery life greatly affected by an NFC bug
 
I disabled tohd as described in the comments (systemctl mask tohd.service; systemctl stop tohd.service) since I only have one Other Half anyway :)

I'm now charging the battery to full, let's see what happens. Until now my average drop has been abot 10% per hour.

rooster13 2013-12-23 10:37
Re: Jolla battery life greatly affected by an NFC bug
 
Quote:
Originally Posted by jsiren (Post 1399889)
I disabled tohd as described in the comments (systemctl mask tohd.service; systemctl stop tohd.service) since I only have one Other Half anyway :)

I'm now charging the battery to full, let's see what happens. Until now my average drop has been abot 10% per hour.
How's the battery life now?
Any improvement when tohd service disabled?

bertjefred 2013-12-23 10:45
Re: Jolla battery life greatly affected by an NFC bug
 
I also am checking it. will report later.

mousse04 2013-12-23 10:50
Re: Jolla battery life greatly affected by an NFC bug
 
same here. I will let you know ...

jsiren 2013-12-23 11:00
Re: Jolla battery life greatly affected by an NFC bug
 
Quote:
Originally Posted by rooster13 (Post 1399890)
How's the battery life now?
Any improvement when tohd service disabled?
Wait until I have a chance to try it out. It's almost charged now :D

siggi_digital 2013-12-23 11:16
Re: Jolla battery life greatly affected by an NFC bug
 
i made a hardware hack, just put thinfoil on the nfc receiver. Battery percentage dropped only 2% in six hours, it was in the night without use, Wi-Fi and mobile was on +email sync .

DrWilken 2013-12-23 11:17
Re: Jolla battery life greatly affected by an NFC bug
 
If You want to disable TOHC service only until next reboot You can add --runtime to the 'mask' command... ;-)

Code:
systemctl mask --runtime tohd.service; systemctl stop tohd.service

seiichiro0185 2013-12-23 11:17
Re: Jolla battery life greatly affected by an NFC bug
 
I'm also trying it right now, off the charger for about 45min now, battery still reports 100% :)

DrWilken 2013-12-23 11:19
Re: Jolla battery life greatly affected by an NFC bug
 
Quote:
Originally Posted by siggi_digital (Post 1399904)
i made a hardware hack, just put thinfoil on the nfc receiver. Battery percentage dropped only 2% in six hours, it was in the night without use, Wi-Fi and mobile was on +email sync .
I don't quite understand how that should prevent the NFC receiver from using precious power...? :)

It just prevents it from connecting to the NFC tag on the Other Half... :)


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