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Originally Posted by notimp
Ah magical thinking of someone incapable of actual logic. With an added probably - to seem as if this was thought out in any way.
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LoL, let me explain
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Originally Posted by notimp
Turn off Wifi.
Turn off Bluetooth.
And in Android settings unter WiFi/Advanced, make sure you set "Keep WiFi on during sleep" to "Only when plugged in", and that you disable Network notifications (Notify whenever a public network is available).
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These are mitigations. They're cool as a suggestion but they don't apply to the previous user, who had wifi and bluetooth already off.
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Originally Posted by notimp
On a Likebook Mars thats almost two years old at this point, this will give you 20 days of standby use.
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Battery guesses are broken in most ereaders, rockchip and freescale. The only way to know how much time can a device spend suspended is by measuring a full battery charge, from 100% to 0%.
I did these tests on a Likebook Mimas (RK3368) and a Energy Pro 4 (RK3026). Recently I did test on a Nook and it last longer.
Obviously comparing them with plain linux ereaders isn't fair, as android e-readers have a bunch of system services running on the background.
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Originally Posted by notimp
Deactivate turn off after x minutes, so that the device always just goes into standby as well.
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I would suggest the other way around. If your device is going to sleep for more than an hour you'll probably want to turn it off instead of suspend. Things go kaboom if we're talking about days or weeks.
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Originally Posted by notimp
For any android device this is plenty.
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I don't have a way to measure plentiness.
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Originally Posted by notimp
People dont even have to deal with apps breaking sleepstates and draining batteries faster, because Boyue force closes all apps after a while, if not specified specifically to not force close. Similarly Boyue doesnt allow for Android apps to set 'start at boot' flags, unless you specify them as being allowed to start at boot. This counteracts most of the usual battery drain on Android - which allows for those long standby times in the first place.
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Fair for user installed apps. Media server, adb, rk-updater, the indexer ... all run at boot
and stay alive during standby.
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Originally Posted by notimp
On better SOCs Wifi might not have to be deactivated at all, but with this one - something using Wifi (or Bluetooth) seems to suspend deep sleep states for too long, which is why it is recommended to deactivate those to to get those stand by times.
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Indeed some phones are very well optimized during sleep modes. As far as I know no eink device is well optimized so your suggestion could apply to any android ereader.
Keeping the wifi chipset idle by itself won't harm too much the battery. My Cervantes can stay on standby during weeks even when the core is always powered. Other things like scanning wifi networks while idle make more harm.
Quote:
Originally Posted by notimp
If we are all finished playing pricks in the know - as far as I'm concerned, we can move on
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Sorry if I hurt you. It wasn't intended. I'm not a fan of Likebooks for other reasons too, but I tried to not mix these reasons in the same bag. I was talking about how badly optimized is the battery time on recent Likebook devices. Specially compared to linux ones, but mainly compared to other android ereaders.
Obviously your suggested mitigations are ok to get most of these devices but having a few real (or better) purchasing alternatives shouldn't allow us to underestimate the main limitations of this product.
I'm happy that you're actually enjoying your rig
