Develop Bugs

[Q] Tracking down Wake Lock

Hey guys,
This has been bothering me for a while now, but on occasion, my phone just stops sleeping. I attached a screen shot to show what I mean.
It happened on stock, so I've tried a couple other kernels, but they have the same problem.
Any suggestions?
Sent from my SPH-D710 using xda premium

trifthen said:
Hey guys,
This has been bothering me for a while now, but on occasion, my phone just stops sleeping. I attached a screen shot to show what I mean.
It happened on stock, so I've tried a couple other kernels, but they have the same problem.
Any suggestions?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Yes, probably you're experiencing the "AndroidOS" runaway issue. This is a nebulous and currently unresolvable issue, probably related to some Samsung/Sprint driver issue(s) causing feedback loops between the events/0 and suspend processes. It seems to be fixed temporarily by a reboot, or just randomly. It may or may not be associated with excessive battery usage.

I used to get those solid awakes, but then I froze a lot of apps and it went away.
I didn't do it systematically to figure out which was the cause.
As an aside, if you have an older version of FlightView, then that could definitely cause the issue. That isn't a stock app, but is somewhat popular and had a bug keeping the phone awake *even though it wasn't configured to do anything*.

Kn0wBuddy said:
Yes, probably you're experiencing the "AndroidOS" runaway issue.
Click to expand...
Click to collapse
Ironically, my AndroidOS has always been high (almost always higher than display), but it would always sleep just fine, and my battery-life was pretty good. But every time this happens, my AndroidOS is actually lower than usual.
So I've temporarily disabled Juice Defender (just in case it was interrupting something and confusing it into holding a wake lock) and removed the Facebook widget (Better Battery Stats had that listed as 50% of the wakeup events, which is just ridiculous).
I set a custom reference point so I can watch it for a while and see if anything weird pops up. It seems to be happening more often in the last week or so, and the only thing I did back then was remove Watchdog, because I haven't gotten any alerts for about a month.
I have noticed that usually when it gets stuck in an awake state for a long time, it also coincidentally has a stealth LOS, and rebooting will magically cause texts and voicemails to appear. Let's hope the December radio update fixes that problem.

NY Times

Anyone notice problems with the NY Times app recently? I noticed some high network activity out of my Note Pro over the last few days, and dug into it last night. Turned out, my tablet never went to deep sleep, and looking at battery usage, the NY Times app was behind only the OS and System.
I can't uninstall the NY Times, but I can revert to the factory image, and that seems to have put a halt to the network activity, and also the tablet is now going into deep sleep again. So it looks like it was an app update, somewhere along the way?

What's deep sleep as opposed to sleep as opposed to going into airplane mode?? Your posting about the ny times and sleep is difficult to understand.
ericbergan said:
Anyone notice problems with the NY Times app recently? I noticed some high network activity out of my Note Pro over the last few days, and dug into it last night. Turned out, my tablet never went to deep sleep, and looking at battery usage, the NY Times app was behind only the OS and System.
I can't uninstall the NY Times, but I can revert to the factory image, and that seems to have put a halt to the network activity, and also the tablet is now going into deep sleep again. So it looks like it was an app update, somewhere along the way?
Click to expand...
Click to collapse

nychotxxx said:
What's deep sleep as opposed to sleep as opposed to going into airplane mode?? Your posting about the ny times and sleep is difficult to understand.
Click to expand...
Click to collapse
Not difficult to understand at all, this is apparently a wake lock issue with the application.
Tapping the power button to turn off the screen puts the device in sleep mode but CPU speed still varies as background activity continues. Application processes can place wake locks on the CPU to keep it from going into deep sleep which is the lowest power consumption setting. A device that never goes into deep sleep will experience higher battery drain with the screen off for extended periods than one that does go into deep sleep. Sleep has nothing to do with airplane mode, which turns off all radios and has no direct impact on CPU.
First thing I would try with the NY Times app is turn off all notifications for it. Personally I don't use it and have it frozen so I can't verify the wake lock issue on my device.
Sent from my SM-P900 using Tapatalk

muzzy996 said:
First thing I would try with the NY Times app is turn off all notifications for it. Personally I don't use it and have it frozen so I can't verify the wake lock issue on my device.
Sent from my SM-P900 using Tapatalk
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Click to collapse
Much better explanation than I could have given, thanks! So wish I could root my tablet (a Verizon...), feel like I'm trying to debug things with both hands tied behind my back!
So far, the NYT problem hasn't come back - can't freeze or uninstall it without root, but have removed it from Magazine UI and basically backed out all updates by restoring it to its factory image and clearing its data. BTW, it was set to only get updates every 4 hours. Obviously it had a different idea.

Yeah I hate it when apps get like that.
It's times like that where I'll use Greenify sparingly to push the misbehaving app into hibernation. Otherwise I'll just let android do it's thing.

A few days ago, I noticed the NY Times app only it's you view 10 articles for free every month. I was going to say, why not trash that garbage? It requires root, though, since it's actually a system app. That is just profoundly stupid.
At least Samsung didn't pick CNN as it's news app, amirite?

Bluetooth wakelock

I am on slimkat and when I have bluetooth turned on, my device does not go into deeps sleep and drains my battery like crazy. Makes my pebble watch unusable. Any ideas what to do?
Sent from my SM-N900T using XDA Free mobile app

bam_dmux_wakelock is the wake lock causing the problem according to better battery stats

lamfeihong said:
bam_dmux_wakelock is the wake lock causing the problem according to better battery stats
Click to expand...
Click to collapse
Do you also see the the following wakelocks I'm reporting in this topic?
msm_serial_hs_dma
BTLowPower
Try to take a look.

Phone stays awake a lot?

Anyone else experiencing this? I'm not sure what the reason behind this is but is it normal? After about 7 hours off charge with barely 30 minutes of screen on time, I'm down to 77%. Wakelock shows that it's been in deep sleep for only about three and a half hours. The phone has literally been doing nothing with location turned off, widget updates only once every 24 hours, etc. I'm not sure what's keeping this awake.
I have knock on turned on, but have greenified nearly everything for optimal battery life, including a handful of system apps (left a few one since i didn't know their purpose) but it seems like I should be getting a bit more.
Is anyone else getting this kind of awake time? Hopefully I didn't mess something up somehow. I can post more screenshots if anything.
Also, I am running G3 tweaksbox.
Sent from my LG-D850 using XDA Premium 4 mobile app

Download wakelock detector from the google play store, and see what apps are the culprits.
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector

Protagoras said:
Download wakelock detector from the google play store, and see what apps are the culprits.
https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector
Click to expand...
Click to collapse
Did you even read the post, or the look at the attachment?
I'm getting my information from Wakelock, and I don't see any applications and/or services that appears to be triggering CPU usage, or screen wake ups.

Battery drain with marshmallow

Hi all. I have an sgh-i317m that I have tried a number of AOSP/CM13 ROMS. I get battery drain when connected to WiFi regardless of what ROM I try, with or without Gapps, location, or WiFi scanning,
I tried turning off wifi during sleep but the phone never gets to sleep.
Wondering if any one else has had this issue and solved it.
Thanks

Appears to me that an app is running in the background that is stopping the phone from going into sleep mode.
Maybe install a logging app?

Dyno-droid said:
Hi all. I have an sgh-i317m that I have tried a number of AOSP/CM13 ROMS. I get battery drain when connected to WiFi regardless of what ROM I try, with or without Gapps, location, or WiFi scanning,
I tried turning off wifi during sleep but the phone never gets to sleep.
Wondering if any one else has had this issue and solved it.
Thanks
Click to expand...
Click to collapse
If u hve screen dimmer or screen filter uninstall it and than notice it .i had such issue .i uninstalled screen filter.
Sent from my GT-N7100 using Tapatalk

audit13 said:
Appears to me that an app is running in the background that is stopping the phone from going into sleep mode.
Maybe install a logging app?
Click to expand...
Click to collapse
It does this even before I install Gapps or any 3rd pay apps.
According to better battery stats, wlan_rx_ wake is causing a wake lock.
1life2love4 said:
If u hve screen dimmer or screen filter uninstall it and than notice it .i had such issue .i uninstalled screen filter.
Sorry, I'm not sure what you mean by a screen dimmer or filter? CSV you clarify?
Thanks for the replies
Sent from my GT-N7100 using Tapatalk
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Click to collapse

Old post about the nexus 5 but it may be of some use: http://forum.xda-developers.com/google-nexus-5/help/getting-rid-wlanrxwake-wakelocks-t2519294

Dyno-droid said:
Hi all. I have an sgh-i317m that I have tried a number of AOSP/CM13 ROMS. I get battery drain when connected to WiFi regardless of what ROM I try, with or without Gapps, location, or WiFi scanning,
I tried turning off wifi during sleep but the phone never gets to sleep.
Wondering if any one else has had this issue and solved it.
Thanks
Click to expand...
Click to collapse
Did you try your stock Rom? Just in case.
Sent from my Xiaomi Mi 5 using XDA Labs