[MOD][XPOSED][KK] Wi-Fi Deep Sleep - Xposed Framework Modules

Only for Android KitKat.
Once installed this mod prevents Wi-Fi from waking up during device sleep mode and when you turn on the screen without unlocking it (to look at the clock, for example).
Background
Normally Wi-Fi can be awakened and kept on due to Wifi locks held by certain applications that often use to abuse this opportunity. This results in Wi-Fi being turned on over up to the half of the total sleep time (or even more) which in turn of course eats the battery. Another issue is that once turned on by a single application it notifies and awakes lots of other apps that may start, for example, their heavy synchronization tasks, etc., making everything even worse.
Auto Wi-Fi apps
Nevertheless, Wifi lock is a good mechanism when used carefully, and generally it should be respected when deciding whether to switch Wi-Fi on and off. This becomes a problem for most of Wi-Fi management apps found in Play Market: they can switch Wi-Fi off in the middle of a Skype call just because the screen was turned off.
The solution
This mod alters a system state machine responsible for managing Wi-Fi so that once put to sleep it can not be woken up by any application that requests a lock. Wi-Fi is only put asleep when no application holds a lock. That is it doesn't cancel locks held already, but once all of them are gone, no one else is able to aquire a new lock until the screen is turned on and unlocked. This doesn't apply to special high performance Wifi lock, it still can be aquired as usual even in asleep mode (anyway, it seems that applications does not use to use this lock too often, so the battery should not became an issue).
Installation
Download and install Xposed framework
Then install Wi-Fi Deep Sleep module and activate it
Reboot
Usage
To make the mod to take an effect proceed to Settings -> Wi-Fi -> Advanced and make sure that:
Keep Wi-Fi on during sleep is either Only when plugged in or Never (increases data usage)
Scanning always available is turned off
The module provides no user interface, nor it runs any services in a background: only modifies a corresponding part of Android. You won't be able to notice it in the main menu or in a task manager. Think of it as a patch that can be turned on and off through Xposed installer.
Source
The mod is open source (with permissive MIT licence), the source code is available on my GitHub.
XDA:DevDB Information
Wi-Fi Deep Sleep, Xposed for all devices (see above for details)
Contributors
abusalimov
Xposed Package Name: ru.abusalimov.xposed.wifideepsleep
Version Information
Status: Stable
Current Stable Version: 1.0
Created 2014-05-16
Last Updated 2014-05-15

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Interesting. I assume this would mean no push notifications, etc.

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Kocayine said:
Interesting. I assume this would mean no push notifications, etc.
Click to expand...
Click to collapse
Yes, unless there is a mobile network available. That is the mod would be more useful for a phone rather than for a tablet.

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abusalimov said:
Yes, unless there is a mobile network available. That is the mod would be more useful for a phone rather than for a tablet.
Click to expand...
Click to collapse
If mobile data is enabled while wifi is connected and running, then screen turns off and wifi goes to deepsleep, does it then use mobile data? I'm having issues sometimes where a "suspend_backoff" wakelock can keep my phone awake indefinitely and it's wifi related. Perhapsthis module could help.
Ah it took me until now to notice it's KK. No chance of a jb version?

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Kocayine said:
If mobile data is enabled while wifi is connected and running, then screen turns off and wifi goes to deepsleep, does it then use mobile data? I'm having issues sometimes where a "suspend_backoff" wakelock can keep my phone awake indefinitely and it's wifi related. Perhapsthis module could help.
Click to expand...
Click to collapse
Yes, once Wi-Fi goes asleep, it instantly connects to use mobile data. This behavior is similar to default one, the only difference is that once it goes to sleep it will not wake up and try reconnect to Wi-Fi constantly, instead it will continue to use mobile data until you turn on and unlock the screen again.
Regarding a weird wakelock, the simplest answer is to try by yourself. Personally I got rid of "wlan_rx_wake" locks (drastically though not completely). I guess this depends on a device.

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Kocayine said:
Ah it took me until now to notice it's KK. No chance of a jb version?
Click to expand...
Click to collapse
Not in a near future, I'm afraid. In KK they had rewritten the whole Wi-Fi management code from scratch, so for JB it would be a completely different module. Sorry for that.

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Great module
I was looking for something like this great idea.
Thanks a lot.
Sent from my HTC One using Tapatalk

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But if i was downloading a file?

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Probably a really stupid, obvious question but.....
If I turn wifi off manually, as I normally do leaving the house...etc... I assume this module will be of no use to me? Would only work if wifi was on, but not being accesed or used by me? Having wifi off means its off, right?

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david6910 said:
But if i was downloading a file?
Click to expand...
Click to collapse
This depends on a downloading application. Personally I was only concerned about Skype, which takes necessary locks and prevents this mod to turn off Wi-Fi during a call (unlike most of other apps that turn Wi-Fi off unconditionally).
Again, the mod itself doesn't make a big change to a default behavior. If you switch "Keep Wi-Fi on during sleep" to "Only when plugged in" or "Never" then downloading a file will or will not be interrupted regardless whether you have this mod installed or not. Try the default behavior without the mod to see if downloading will go on after the screen is switched off (plus about 15 minutes timeout). If everything's OK, then installing the mod shouldn't make if worse (it will however prevent an app from using Wi-Fi to download a new file by itself during the night after Wi-Fi goes asleep).

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robneymcplum said:
Probably a really stupid, obvious question but.....
If I turn wifi off manually, as I normally do leaving the house...etc... I assume this module will be of no use to me? Would only work if wifi was on, but not being accesed or used by me? Having wifi off means its off, right?
Click to expand...
Click to collapse
Yes, you're right. The mod only affects a code which come into play when Wi-Fi is switched on manually (see also "Usage" for necessary settings).

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verynuclear said:
Great module
I was looking for something like this great idea.
Thanks a lot.
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
Thanks for the feedback.

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Will this mod work with touchwiz kit Kat?
Sent from my SGH-I747 using XDA Premium 4 mobile app

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Shels said:
Will this mod work with touchwiz kit Kat?
Sent from my SGH-I747 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
No idea. Most likely it will. Why don't you try and tell everyone about results?

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So I've had the wlan Rx wake lock for some time now and am really blooming forward to this fixing it. However once I enabled this module my drain got worse and I made the WiFi setting changes..
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my Nexus 5 using Tapatalk

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Creed0 said:
So I've had the wlan Rx wake lock for some time now and am really blooming forward to this fixing it. However once I enabled this module my drain got worse and I made the WiFi setting changes..
Click to expand...
Click to collapse
Thank you for reporting, I'll try to investigate this. This is weird though, I didn't experience anything like this on my Nexus 5. Does this battery drain remain even after rebooting?

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Well I rebooted after enabling the module. And I'm not sure if these would interfere but I'm running the Franco kernel and had the pia VPN app running during the log above. The only reason the battery lasted for 16 hours or so is because I have WiFi-o-matic auto switching off WiFi overnight.
Sent from my Nexus 5 using Tapatalk

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Creed0 said:
Well I rebooted after enabling the module. And I'm not sure if these would interfere but I'm running the Franco kernel and had the pia VPN app running during the log above. The only reason the battery lasted for 16 hours or so is because I have WiFi-o-matic auto switching off WiFi overnight.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Ah, wait, it seems that I've found a suspicious piece of code that I might miss to handle properly. But it is only responsible for updating battery stats, not for real battery consumption. I'll fix it soon.
BTW I use franco kernel too, but this can't be related to the issue. Thanks for the info though.
P.S. I'm not sure how it will work with WiFi-o-matic, the mod is designed to work with stock Wi-Fi management (no apps).

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Sounds good, I'll be looking forward to it!
Sent from my Nexus 5 using Tapatalk

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Please update to v1.1:
Fix battery stats weirdness (random apps keeping device awake near to 100% of idle time). Thanks to @Creed0 for reporting.