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IOS 11 battery life
I've been noticing terrible things happening battery wise over the past week (I always update to the latest IOS immediately). Twice I've put my iPad (Air 2) to sleep at night and found it dead flat in the morning. Once with my iPhone 7.
Looking at the battery usage stats BM3 and Quantum Sequencer are both the highest users of battery power - BM3 is now showing 17 minutes use, 19 hours background activity. I'm wondering whether having Ableton Link enabled is causing those apps not to sleep properly. This kind of makes sense because QS doesn't have any audio to run in the background.
Comments
BM3 continues to run in the background always. You have to kill it or it will run until your battery dies. It’s one thing that I’ve noticed about the program
I thought initially that IOS 11 had fixed that problem. In this case I'm not sure that background audio is the problem though, as Quantum isn't an audio app.
I wish Apple would provide a single 'Disable all background audio' switch. The idea that you are going to spend ten minutes hunting through settings disabling BGA at the end of a session is laughable.
I think is more general: just background processing
I wouldn’t say it’s a problem it’s just how some apps work. Some let you turn the option on or off but BM3 doesn’t
I always plug my devices in at day end. I assume that they are going to be dead at the end of the day, all promises to the contrary.
I have actually found iOS11 to be decent with battery, at least no worse than 10 was.
In this case it's something different. Both devices going from 80% charged to dead flat overnight without being touched. I'll have to do a test with just Quantum running, no b/g audio at all.
I had this issue last week. But it turned out I hadn't cleared audiobus session and the battery was dead in the morning. Sometimes, I restart the ipad before sleeping to make sure nothing is left in the background.
I have neither iOS 11 nor BM3, and my battery drains during the day whether I use the phone or not.
Same thing with Korg Gadget - also on iOS 10 - if you don't kill it, it will suck your battery dry.
It’s not iOS 11. It’s an app problem. I get the same with Capo Touch if I forget to kill it.
Also, iOS updates often give worse battery life in the beginning, because the iPad/iPhone has to do a lot of processing. For instance, the Photos library will be re-scanned entirely, which is power-heavy. Kill BM3 after use, and plug it in at night for the first week.
The thing with iOS is that it doesn’t have a real ‘official’ way to kill apps. Ive noticed in the last year or so that some apps hang (IAA zombies) and potentially can drain the battery. Swipe to clear is definitely a must for sequencing apps but I further and at the end of the Audiobus session I always do the soft reset (holding power button until slide to off screen appears and then press the home button until I’m taken back to home screen).
@pauly
I was going to advise pretty much the same things. I am on an Air 2 with iOS 11.1. While I am generally cool with the battery performance, I did wake up to a dead iPad twice in the last week. I am usually pretty diligent about closing out of everything and doing a soft reset, but I think I didn't do those things on the nights before the dead iPad incidents. I think I just went on until too late and sort of passed out.
One of the times my iPad was totally dead, but when it recharged an audio app from the previous night's session was still running in the BG. It made me suspect myself as the likely cause of the battery drain
I pretty much do the kill ghost apps trick since ios9. So rarely ever get a dead iPad.....
By the way, I just looked at my test air 2 that I haven’t used in a couple of day and guess what? Aum has drained it down to 5%. Culprit: AUM 24hrs worth of background activity. Active lil bugger ;:}
So why can't 'it's-all-about-the-great-user-experience' Apple work this out? I understand that there are occasions when you might really, really want stuff to keep happening in the background when the iPad is asleep (like when you are watching something via Airplay for instance
) but surely there's got to be a better solution than just running the device down to nothing, or manually killing apps.
I don't get it. I double tap home and swipe to clear stuff, never had issues. Are y'all saying there's some other arcane way to stop an apps functioning?
@db909 Just the "hold power button til the screen pop up to power off, then hold the home button until the screen refreshes" thing. I think it's called soft reset.
@pauly I also try to plug it in overnight if I remember to.
@db909
I'm saying that you shouldn't have to do that.
https://www.cnbc.com/2017/07/20/stop-quitting-apps-on-your-iphone-and-ipad-its-making-things-worse.html
The problem here is that Apple haven't worked out how to optimise the suspend process management properly for Background Audio, and possibly for Ableton Link.
My specific question is whether anybody has noticed that things seem to be worse since the IOS 11 upgrade than previously. I'm not completely sure that that is the case as I wasn't using any AL apps previously.
Imho it is 1/4 of what it used to be
Mateusz: Do you mean the battery life?
Paulo, I think that CNBC article is geared toward general iOS use and largely doesn’t apply to us iOS musicians. Music apps have to depend on avoiding standard iOS background activity management. Otherwise a long music session could end abruptly or apps could drop out suddenly.
No big changes in battery life for me in iOS 11. The biggest issue is that the iOS 11 upgrade resets some non- music related system background activity settings which drain the battery.
Hmtx, Which settings were those?
Too lazy to check..
I think you go into settings - General - Background App Refresh
That’s a good start ... there may be more.
ha ha! Yes, I think they sometimes need changing.
My favourite is when it decides that your 'user experience' will be improved by switching on cellular app downloads.