Temporary + Permanent Fix For Battery Drain Via Terminal! - Jolla General Talk Discussions on JollaTides Community Port

JollaTides · Post edited by JollaTides at 2014-01-09 11:36:22

/2013/12/23/source-of-battery-drain-nfc-always-on-solution/

For temporary fix, type into terminal:

devel-su
systemctl stop tohd.service

Password is whatever you set in developer area of settings menu.

This will require entering each time after reboot.
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For permanent fix if you're happy with the results, type into terminal:

devel-su <- you command your terminal to enter developer superuser mode (your password) <- note: invisible writing. Jolla confirms that you are the superuser systemctl mask tohd.service <- you put a mask to a buggy service commanding NFC chip systemctl stop tohd.service <- you stop the service exit <- you leave the devel-su mode exit <- you leave the terminal (it closes) 
________________________________________________________________________

If you ever want to restore to original settings, you can use the following code:

_________________________________________________________________________

devel-su <- you command your terminal to enter developer superuser mode (your password) <- note: invisible writing. Jolla confirms that you are the developer. systemctl unmask tohd.service <- you take the mask away, so the system can find the service again systemctl start tohd.service <- you start the service exit <- you leave the devel-su mode exit <- you leave the terminal (it closes) _______________________________________________________________________

Report here if it works for you! :-D

andreibechet

I have went for the tin foil solution. Still under test, although it looks a bit better.

JollaTides

I'm running the permanent fix now as tipped by @Znurre on the blog site. So far so good... ;-)

WilliePre

andreibechet said:
I have went for the tin foil solution. Still under test, although it looks a bit better.

Me too, will see in the morning weather there's a change in battery usage.

JollaTides

Here's some info from Jussi who posted earlier on the blog:

Stopping the tohd service seems to drop standby current draw from around 130-150mA to 10-60mA. Those interested in measuring the power draw can check out: https://github.com/jusic/energiador

(Y) (Y)

andreibechet

Definitely much much more better .... kinda heavy usage and still with 15% since 8-9am previous morning.

MichdeSkunk

what is tohd service???
it is needed for???

Jouni

For those of you who understand something about Linux in general, I logged into my phone and run top for a while while both disabling and enabling tohd. The results speak for themselves:

Just after stopping tohd.service:
top - 18:51:01 up 7 days, 1:12, 1 user, load average: 0.11, 0.57, 0.66

A few minutes after enabling it again:
top - 18:58:20 up 7 days, 1:20, 1 user, load average: 0.57, 0.83, 0.76

And two minutes after disabling it again:
top - 19:00:50 up 7 days, 1:22, 1 user, load average: 0.05, 0.51, 0.65

For those who are not familiar with the output of top, the most interesting things are the last three numbers: system load avg over the last 1, 5 and 15 minutes.

So there really seems to be a problem communicating with the other half using nfc.

WilliePre

WilliePre said:

andreibechet said:
I have went for the tin foil solution. Still under test, although it looks a bit better.

Me too, will see in the morning whether there's a change in battery usage.

I did the "Great Tin foil upgrade" 20 hours ago on my #Jolla, it still has 69% left on battery, after lightly using it.

<3

JollaTides · Post edited by JollaTides at 2013-12-26 18:18:36

7% remaining after 50 hrs light use!

andreibechet

JollaTides said:
7% remaining after 50 hrs light use!

Impressive! Too bad I cannot do light use :))

blitzschlag

hmmm, with semi-good g2/g3 connection and light to no usage i hardly get more than a day. Thats without bluetooth and wireless and ofc with tohd service disabled.

kinda annoying...

JollaTides

Have updated the permanent fix in the original post as per @simo direction using the "mask" technique.

See full edited post here: /2013/12/23/source-of-battery-drain-nfc-always-on-solution/

JollaTides

@blitzschlag Have you tried the updated fix which I've just amended in the original post ? Having tested it for a few weeks now, that appears to permanently disable the NFC even after reboot. ;-)

blitzschlag

ah, thx. hadn't seen the update with the masking of the service.

i'll check again

J0lla_Pekka

I am pretty satisfied with the sw fix. However, in my phone the battery
capacity drops first kind of quickly from 100 to 80 or 70 %, but then stays a long time in the range 40 to 70 %. Eagerly waiting for the final solution by Jolla.

blitzschlag

hmm, ok. i did mask and stop the service. rebooted and checked if the service is properly disabled. now the phone lost 7 % battery in 14 hours doing nothing. thats a huge improvement to before.

Thanks Timo for pointing me in the right direction again...

JollaTides

@Blitzshlag No problem glad you got it working. ;-)

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