short battery life on OPO (Bacon) with OTA12

domubpkm

@joolz As far as I'm concerned, I've never noticed any overconsumption on an OPO that didn't heat up more than normal for an unused phone.
so I can't enlighten you any further.
You can always open a new bug report here if your case is not already referenced:
https://github.com/ubports/ubuntu-touch/issues

flohack

My home WiFi seems to kill battery now, and its probably because of my IPv6 enabled internet. UT is not yet able to use this, so it prints an error and tries again. Leading to a device that wont sleep properly.

I can assure we did not change anything in those parts willingly, so its either a strange side effect of something unknown, or its just a thing of what happens in your WiFi. Because traffic will wake up the phone too, it needs to see if a packet belongs to it or not.

BR

Moem

@Flohack said in short battery life on OPO (Bacon) with OTA12:

My home WiFi seems to kill battery now, and its probably because of my IPv6 enabled internet.

I'm seeing the same result on WiFi, too, and we too have IPv6 enabled internet. Now that I've switched the WiFi off, I'm getting an immensely better battery life. I don't know how long yet, but it looks like several days instead of 7 hours.

cliffcoggin

Moem, did you fit a new battery, and did it make much difference?

Moem

@cliffcoggin I didn't yet, it's on the slow boat. But this gives an impression of current battery life of my OpO on UT:

Arg7800

@Keneda Things got much better after changing to devolpers channel and build 51.

flohack

@Moem I have an idea how we can disable IPv6 do you wanna try it?

Moem

@Flohack Disable it on the phone? I'm game. I'm not good with the terminal, but I can follow directions.

flohack

Alright, take a look at this please: https://pad.ubports.com/p/nm-battery-experiment and tell me if you were succeeding with that. You can check if it worked, you should no longer receive the following entry in dmesg log:

Jun 18 11:23:44 ubuntu-phablet NetworkManager[1342]: <error> [1497777824.2948] platform-linux: do-add-ip6-address[21: 2a02:8388:8981:d00:9c9b:9eab:443f:a3aa]: failure 22 (Invalid argument)

Moem

@Flohack I'm busy today but I'll try this out tomorrow.

Moem

@Flohack I just tried but had to give up. I have logged what went wrong. Sorry.
Edited to add: I got some help and that made things work. But IPv6 does not appear to be successfully disabled.

flohack

@Moem Can you send output of dmesg, if you see any messages about IPv6 repeatedly put there? And, what does ifconfig say for the wifi interface, does it show an IPv6 address? Probably not, as this is broken on all 3.x kernels IMHO

Moem

@Flohack As I tried to indicate before, I'm not good with the terminal at the best of times. I'm worse with the terminal on UT. I don't know how to select or copy, scrolling is spotty at best, and if I manage to copy what on earth do I do next?

I'm getting screens full of output from the command 'dmesg'. I don't think I see anything about ipv6 there, but looking at terminal text on a phone screen feels like watching a movie through the mail slot.
If I enter 'dmesg | grep ipv6' or 'dmesg | grep ip6' I get zero output. (just a new command prompt)

In the output of 'ifconfig', how do I recognise the part about the wifi interface?

In any case, the battery gets eaten at a rate of 21% over the last hour or so.

AppLee

@Moem
You can try something like this command dmesg > /home/phablet/Downloads/dmesg_output.txt
This will create a file that you can retrieve with dmesg output.
The > character redirect the standard output from the preceding command to a file following the sign.

Moem

@AppLee Thank you, that worked like a charm!

@Flohack The output does indeed not contain anything about ipv6 or ip6, do you still want to see it? If so, what's the preferred way?

flohack

@Moem best would be you upload it to pastebin or a similar service. And put the link here.

BR Florian

Moem

@Flohack Yes, that's fine, it's here: https://pastebin.com/tCNVRz7a

truscellino

Hi everyone,
Like most of you in this thread, I have noticed a drop in battery life since OTA12 with very light usage of the phone. Nothing looking awful when taking a look at processes with "top" in the phone terminal, Unity8 with ~2-5% of CPU... which means that hardware is working too much when most things should be idle.
I will try:

disabling wifi (except when I use it)
try and disable IPv6

Will report back here...
thanks

flohack

@Moem Sory I would need the dmesg right after startup. You sent me one thats already after some time of operation. So reboot, and then try to capture it. Also /var/log/syslog could be useful..

flohack

@truscellino You cannot use top to measure activity of the CPU, since top will keep your phone out of deep sleep, and, worse, if you try it with the terminal-app you will also see a lot of CPU going into rendering the display. Also, if you connect a cable and the phone gets charged from that, the whole battery management will switch to different modes.

So currently there is no reliable way to capture activity of the phone while you are on the go, someone needs to research kernel measurement facilities for that.