Hacking Luma3DS unusual battery consumption in sleep mode

[MK73DS]

Hi all,

I'm back since almost a year on my n3DS. I was on ReiNand with 9.2 Sysnand and Emunand.
I was able to install Luma3DS (with boot9strap) and to transfer everything on my Sysnand. Everything works perfectly ... except standby battery life ! My n3DS can't last 5 hours sleeping, that's totally insane considering it usually lasts for days.

I read somewhere that it is Rosalina causing this problem, but I didn't find anyway to disable it (since I don't use it).

Does this ever happen to you ? What can I do ?
The problem is not the battery : it lasts almost as much while playing !

Thanks


EDIT : The problem was my R4i-3DS which was in my new 3DS. Looks like flashcards use power even when not in use

 

[austin5623]

Maybe it's doing something weird like not actually going into sleep mode? Does the power LED do a "breathing" effect when it's supposed to be in sleep mode?

 

[MK73DS]

Yes, it does. Even with wireless disabled it can't handle a day :/
I came back to the 3DS because I wanted to play in the train before and after school, and streetpass people during the day, but my console is out of juice so fast :/
Maybe I did something wrong ? I followed the guide on 3ds.guide

 

[austin5623]

I haven't used my 3DS in a while, but its on the second latest version of Luma, and I don't remember having problems with it.

 

[MK73DS]

Soundhax in the fist place to install boot9strap (required to have Luma3DS on the latest version)

 

[austin5623]

Okay, that's the exact one I used. Maybe something happened during the transfer to sysnand? Don't ask me about it tho, I've never done that.

 

[MK73DS]

I hope this is not that ! ^^" There is all my precious data from 25/03/2011 x)

In fact, I forget to check something : everytime this happend I had a running title in the background. I'll close everthing this night, charge up my 3DS to 100% and keep it sleeping. Hoping at least 50% left ^^

 

[mikefor20]

I leave a game running frequently and don't have that much battery drain. When did you install B9S? When did you last update Luma? Versions? If I were you I would make sure to update Luma to the latest build. The Legacy build of 8.1 Luma exists with no Rosalina.. I highly doubt Rosalina is the issue. But if you are bored I suppose you could try that.. Luma 9.0 dropped and AuroraWright discontinued the legacy branch so there are known bugs in them.

 

[IC_]

For some reason my 3DS charges itself in sleep mode when it goes below 5%

 

[doctorgoat]

Do you have a DStwo?

 

[trecko1234]

You say you have data from 2011. Assuming you probably have a launch system, or at the very least an old console, batteries don't last forever. Years of use will wear down a battery until it's no longer to keep a charge as long as it used to. Buy a replacement battery.

 

[MK73DS]

Do you have a DStwo?

I have an R4i-3DS, does it also drain the battery ?

You say you have data from 2011. Assuming you probably have a launch system, or at the very least an old console, batteries don't last forever. Years of use will wear down a battery until it's no longer to keep a charge as long as it used to. Buy a replacement battery.

I transfered everything on my new 3DS when I bought it Only my data is from 2011



Without a software running in the background, my console went from 100% to blinking red in about 10 hours. Still better than 5, but it still can't handle a full day :c

 

[Edgarska]

I have an R4i-3DS, does it also drain the battery ?



I transfered everything on my new 3DS when I bought it Only my data is from 2011



Without a software running in the background, my console went from 100% to blinking red in about 10 hours. Still better than 5, but it still can't handle a full day :c

Does the 3ds actually shut off because the battery runs out? Are you using a stock battery or is it a replacement?

 

[leon315]

reason 1. u have any flash card in
2. it's on emunand mode

 

[MK73DS]

Does the 3ds actually shut off because the battery runs out? Are you using a stock battery or is it a replacement?

Yes it does, and it is the stock battery.

reason 1. u have any flash card in
2. it's on emunand mode

I'm charging my 3DS to 100% and test it without the flashcard in it
But I'm on sysnand thought

 

[SkillingCat]

Mmh, idk maybe you have some issues with your sd card ? Maybe try booting sdless luma and put it in sleep mode, and then see if it changes the thing or not.

 

[MK73DS]

Mmh, idk maybe you have some issues with your sd card ? Maybe try booting sdless luma and put it in sleep mode, and then see if it changes the thing or not.

That's a possibility, but I think this is unlickely : I was before on Emunand (therefore, on SD card) and I didn't have any issue. I don't think my SD card is using that much power

But I'll definitely test it if removing the flashcard doesn't change anything

 

[SkillingCat]

I see, maybe it's actually rosalina related then ^^
Sure, and also check on luma github if there are any complains about the same issue than yours, maybe there is a workaround
Also, make sure your sd card isn't corrupted if it changes something with the sd card out

 

[MK73DS]

I already have checked github, the only issue I found was closed because "This is impossible, Luma3DS doesn't cause significant battery drain over stock" ...

I'll test my SD card right now

 

[MK73DS]

So far so good : after 3+ hours sleeping without flashcard my n3DS still have plenty of juice (93% according to the Rosalina menu) !

I think the problem is solved
Thank you guys