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baseband_xmm_power kernel wakelock drains my battery!

Hi, I don't know what to do, I'm running 4.2.1 stock on my 32 3G N7. The tablet cannot go in deep sleep because of constant baseband_xmm_power kernel wakelocks. I tried factory reset, but the problem persists. For example with 5h the screen off, there are >4 hours partial kernel wakelocks.

Same here and I'm sick of it. Sometimes my Nexus manages to enter deep sleep but I still see a significant percentage of that kernel wakelock. It also happens that wifi won't shut off on sleep, and I'm talking about when it truly enters deep sleep, and it's correctly configured.

I have the same problem. Battery life is really poor due to this. My LP core is running at full tilt for at least half the time the screen is off, preventing deep sleep.
I found a suggestion that turning on flight mode and then rebooting might help, but I think the problem recurs pretty quickly if not immediately.
Saw a post that said it's due to the modem switching power levels when radio reception is poor. That would definitely make sense in my case — 3G reception fluctuates a lot at home and I am constantly losing connection. I have removed the SIM and will check it in the morning to see if there's any improvement. (Using BetterBatteryStats).
Hope this bug gets fixed in the next update. Almost thinking I should have got the vanilla wifi model
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EDIT: Removing SIM overnight doesn't help. Over the course of 8h screen off, baseband_xmm_power was active for 7h 46m!

I'm having the same problem, only when mobile reception is poor. Unfortunately, my mobile coverage at home is currently near-zero, which makes using my tablet as an alarm clock a dicey proposition unless I plug it in overnight.

Wifi Wakelock

It has been a fairly commonly reported problem (like for instance http://forum.xda-developers.com/showthread.php?t=2133176) when packets from a wifi network keep a device awake and downloading information all the time. This apparently started with ICS/JB and has never been fixed. On older devices it shows up as wlan_rx_wake but on the Note 3 it doesn't show up in any wakelock detector and is just a huge Android System keep awake time
On (school) wifi, I am getting about 80%+ wakelock time due to this issue. Even with all cellular antennas completely off, it drains about 15-20% an hour. On a device with a battery as big as the Note 3, that is a significant amount, and is further backed by the fact the in BBS the kernel has a data usage of about 300MB/hour. I used Network Log and see that I am getting packets from almost 1000 devices on the network, all at school.
Do any of you have the problem or any suggestions for fix? Most suggested fixes don't work as they are mostly router-side, which I have no access to. Since Verizon sucks big time here, my options are force 1X (5%/hour drain), force 3G (8%/hour drain), try LTE (like it will ever connect), or wifi (huge drain). Or is there any way to bring this up to Google/Samsung?

I have the same issue on my Note 2 and 3 with my Netgear R6300 and it drives me INSANE! I need to try another router.

URPREY said:
I have the same issue on my Note 2 and 3 with my Netgear R6300 and it drives me INSANE! I need to try another router.
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Yes, I had it on my Note 2 as well, but it didn't drain nearly as fast. Makes me miss my Razr Maxx which had better reception and did not have this bug.
On a side note, I have a R6300 at home and it doesn't have the problem with the Note 3, you may be better off investigating the router settings first before buying another.

Phone active while dozing?

Hi all,
During idle and sleep time I see my phone is still active during doze (not during idle_pending but during idle itself). I can constantly see the active line in the graph like bar code. Happens both in wifi and Lte.. I can't find any suspects using bbs and wakelock detectors.
Do u keep wifi turned off during night? If it's turned on, do u see the phone being awake.
BTW I have set the wifi frequency as 2.4 ghz only and my router is 2.4 ghz one..

Look usage wakelocks statistics using BetterBatteryStats.

Marshmallow wifi battery drain bug..

After installing marshmallow to note 4 910F, I found out to much battery consumption.. It was more obvius when i left phone at night, connected with my wifi router. It had 20-30% battery consumption at 7 hours. Phone on, wifi on, rest off.
If i turn off wifi, no battery drain.. I loose 3%.
Even with 4G on, and wifi off, i loose much less!!
I tried more than 4 roms 6.01, factory erased everything, even safe mode. Always wifi drain.
In lolipop i had about 3% drain with the same.
Searching in net, i found out same problems mostly with nexus (probably because they had first of all marshmallow and they find it first..). I also found the same for note 5.
Many say to set router to 2.4 gihahz, set static ip, turn off something like v6 ip protocol? I don't remember well.
Also i read, mostly problem exists if router have huawei chip.
Checked mine, and it did had huawei chip..
Anyway i didn't found a solution for this. Tried better battery stats and found out tha alarms was for long time. Sleep was 85%, when normal would be 97%.
I also have a photo showing bigger drain in wifi than 4G.
Anyway how problem solved? I changed router and with everything same, i loose 3%....
But when i connect to other routers coffe, etc, if they have the same chip i still have drain there.
I probably find out the problem in note 4 first of all, as i dont read anything searching so, i inform others here.

note marshmellow battery drain
hope this helps. had the same problem of battery drain and not being able to put phone in power saving mode. i stumbled upon things that the update cuts on and you have no idea, anyway, it seems that the update has the search for other devices running 24/7 and you have to go in and switch it off. since then power mode has been enabled and stays on and battery life is back.

hello , guys .. beezyb can you explain with steps ?! you said that it seems that the update has the search for other devices running 24 hours / 7 days and i have to go in and switch it off ... bla bla .. what you mean with that ? !! can you help me ? !

Change of router affects battery?

Phone: Mi A1 Stock - Oreo 8.0 April update
I consistently charge the phone when battery level is around 30% to around 85%.
I recently changed ISP's and a new router was installed. It is a Huawei dual 2.4/5GHz fiber router that replaces an old Huawei single band fiber router and has 2 separate SSID's.
Since that change, my battery life has taken a significant hit and drains MUCH quicker than it used to. Where it would normally last 2-3 days, it now lasts about a day. Battery drain during screen off time is almost twice as fast as previously. For instance, I charged the phone to 90% Yesterday, less than 21 hours ago. Battery is now at 53% with only 21 minutes of SOT!
I've tried:
Staying connected to the 2.4GHz band
Staying connected to the 5GHz band
Turning off the Always On setting for WiFi that I have always had on
Nothing above seems to impact this situation in any way. If anyone has any ideas or solution for this, I would appreciate the help.
Regards,

Maybe the reason is a different transmit power and receiver sensitivity of the router. Maybe your new route requires a higher transmission energy than you old router.
In addition, some routers allow to use 2 channels in parallel, which would also mean higher energy consumption

I am assuming it is something like that. The signal strength is the same on both: full signal. The new router is considerably faster than the old one in throughput, even on the 2.4GHz band. But wow! Now I am thinking that the A2 needs a bigger battery! I really did not expect this type of hit from changing routers! Might be something for others to consider if they are planning a change.
Thanks for the response.

you updated the firmware on the router?

Duplicate post deleted

riccetto80 said:
you updated the firmware on the router?
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As far as I can tell by Huawei's screwed up website, the router has the latest firmware. Huawei's website is NOT user friendly and it took me quite a while to even find the firmware area! REALLY bad design for a customer website!
But thanks for the suggestion. It did make me look it up, or at least try to.

@KB_Thailand: you could consider using some custom-firmware for your router.
Typically you would gain more options in configuring your router
Even with the standard firmware, you could play around with various options to find out which configuration and option suit you best

then try to change the wireless band, maybe other router automatically used a less crowded band, this new one not do this and you end up use a band who is used from many people who live too close to you.

Thanks to both @riccetto80 and @Tiemichael for the suggestions. I did look at the router setup and also looked at network diagnostics. The router appears to be set up okay.
Signal strength for the WiFi bands is between -45 and -50 dBm everywhere in the house, and noise is between -88 and -91 dBm.
Both bands are set to auto select, and both bands are using unused bands in the area, and are the 'best bands' according to the diagnostics.
There are only 3 other WiFi routers I can see from my house, and 1 of those belong to my Time Machine. The WiFi router is not using the same bands as any other WiFi.
Transmission strength is set to 100% on both bands.
When I went to bed last night, I had 41% battery. This morning, 7 hours later, I had 20%. The screen was off and the phone should have been in sleep mode, yet it drained 21% battery. The usage in Settings->Battery shows Launcher3 as eating a lot more power than might be expected for a phone in sleep mode. I have tried using ONLY 2.4GHz and then ONLY 5GHz, which made no difference in battery consumption.
I am at a complete loss as to what is going on.
Regards,

maybe is not about wifi! did you tryed a foce doze app like naptime and a app-sleep app like servicely?

It is definitely something to do with the change in ISP/router. I was out of town the last 2.5 days and the phone went back to acting as it normally did before, lasting over two days on the charge, even while switching WiFi networks often. The hotel had 6 networks in both bands, and depending where you were on the property, one of them would be much stronger than the others. No issues whatsoever with battery drain on either band. I came home about an hour ago, and the battery has already drained 6%. This is after only using 3% since 0600 this AM until I got home.
@riccetto80 No, I haven't tried the apps because it wasn't doing this before and the trip proved it is not something that went bump with the phone hardware. I just need to figure out what is going on with the new router, as I am almost positive it is the problem. I have a couple of other things to try over the weekend, so hopefully will arrive at some kind of understanding at what the problem is. If no resolution, I will try the apps and see if they make a difference.

I *THINK* I might have figured this out. It may be a two part problem. I went into settings and set the location to Battery Saver vs. High Accuracy, set the Security to turn off the settings to not lock the phone for my home location and on my body, and went into the router and set the Beacon Period to 200 from 100. I tried 1000 and DTIM of 2, and 500 and a DTIM of 1, but that made the internet connection quite laggy, so backed it off to 200 and 1 on DTIM. (100 and 1 is default) These changes SEEM to have slowed the battery drain down considerably., only losing a few percent points in the 4 hours since the changes vs. 6% in an hour. It's funny because these settings were still active when I went out of town, so it may have something to do with the keep unlocked for the home location and the new router.
I'll report back if these don't fix the problem.

Follow up post:
The issue is some sort of conflict between the router and the Stay Unlocked at this Location setting. I went back into the router and set the Beacon back to 100, the default setting, but left the Stay Unlocked Setting off and the High Accuracy Location setting set to Battery Saving. The phone is now acting like it did previously, so I consider the problem solved. Where before it was using 6% in an hour, I have only used 5% in 6 hours with these settings.
So, if you are experiencing battery drain issues, one thing you might wish to try is to set Location to Battery Saving (middle selection) and make sure the Stay Unlocked settings are off. It is really no more of a pain to hit the fingerprint reader than to hit the power button to turn on the screen.
I hope this helps someone.