And it seems that we're not the only ones to see this:

asked Aug 17 '18
Hi,

I am using sailfish X, on xperia X device.

Once in a while, I notice that my device gets hot, and its battery drains quickly. top shows that this is due do ofonod process, run by user radio.

https://together.jolla.com/question/188336/ofonod-process-takes-up-100-cpu-until-i-reboot-my-device/

@wgarcia said in Observations on battery life - please share your experiences:

@alan_g So is ofonod the culprit? In my Nexus 5, it seems it got fear to be discovered because it hasn't done this for more than 20 days. My battery is lasting now all day long when it doesn't enter into this process.

This is one data point. ofonod may well be the culprit. Alternatively, it may be a victim.

If you look on the openstore you can find a link to the source on Github. I took a quick look and it clearly would need rebuilding & package for 16.04.

AFAICT Michael is no longer active on the project, so someone needs to take over. The beauty of free software is that is that anyone can do that.

If you've the motivation (wanting to use it), rebuilding and repackaging an app really shouldn't[1] be hard. Nor should uploading to the store.

There are too few "core devs" on the project to take over "orphaned" apps like this, so they depend on on the people that use them to keep them going.

[1] It could be that the app needs additional changes, because of changes on the phone. But we won't know until someone tries building it for 16.04. If there are problems there, people will help.

@alan_g said in Observations on battery life - please share your experiences:

Next time I see this I should open a terminal, run "top" and capture the screen. It might give an additional clue. (Other suggestions welcome.)

I've now done this:

1. When I spotted the problem:

2. After attempting to "shutdown", when it seems to simply restart Unity8:

3. After forcing power off and restarting:

4. An hour later:

@lakotaubp said in Observations on battery life - please share your experiences:

Repeating comments or issues already clearly known or stated is not going to help anybody.

There's a fine line here: Adding more information (even a few "me too"s - to indicates it is common) doesn't count as repeating. Seeing an issue on different devices, or software versions doesn't count as repeating.

@wgarcia said in Observations on battery life - please share your experiences:

In my case I think there must be some process or something involved, since sometimes it drains very fast and I notice the phone is hotter, sometimes it lasts a lot more

Yes, that sounds like issue 1 in the initial post. If I don't notice the battery dropping I eventually notice the warm pocket. Of course, for me, it never happens when it's convenient to try to figure out what's happening on the phone. Have you tried the workaround I mentioned above?

Next time I see this I should open a terminal, run "top" and capture the screen. It might give an additional clue. (Other suggestions welcome.)

@alan_g said in Observations on battery life - please share your experiences:

Sometimes it gets to a state that "eats" battery very quickly when not in use. Shutting down (which, in this state often need two tries before the screen goes fully black) and rebooting seems to fix this.

@chdslv said in Observations on battery life - please share your experiences:

Glad you brought this up. N5 just eats the battery in idle state.

Clearly our experiences differ here: if you always see what I see sometimes then figuring out why there's a difference could provide the clue needed to fix it. Either your phone is different to mine, the way you use it is different to me, or something else (the cell network?) is different. I've tried to explain how I use it in the top post - are you doing something different?

I see from the linked thread that you've tried some experimentation. Would you be up to trying some more?

First, to get a baseline that we can both reproduce:

1. put into flight mode
2. power off
3. charge fully
4. switch on
5. immediately, without starting any apps, leave idle overnight (8hrs say)
6. Check the battery level in system settings

If we get wildly different results, then something is different in the phone. If not, something is different in how (or where) we use it.

@zx81 it would be easier to follow if you edited your first post: You can you know. ;)

From "@garrogarri" on Telegram (before it gets lost):

With FP2 I get an average 16hrs more or less. I also notice high battery drain when screen is on. FP2 help me with point 1. rebooting automatically from time to time, for example when I want to take a photo.

Note, there's a bug reporting a specific N5/OTA3 "left disconnected" scenario that may be relevant.

Disable WLAN, GPS and bluetooth, charge to 100% and wait 24 hours without using the phone
...
Charge level dropped down to <70% (>30% discharge within 24 hours)

AFAICS that hasn't been retested with OTA5, and appears unrelated to the issues noted above.