Nexus 7 smart cover only works when Wifi is on? - Nexus 7 (2013) Q&A

I have tried 3 different Nexus 7 cases on my new Nexus 7 and for some reason the magnetic "screen turn on" feature only works when Wifi is on. Otherwise the screen will not turn on at all, and I will need to press the power button to have the screen turn on.
Has anyone else experienced this issue? At first I thought it was the case but no matter what case I try this issue still persists.

Mine does the same thing. I have a suspicion it is by design but who knows. Gonna do some more searching of threads
Sent from my Nexus 7 using XDA Premium 4 mobile app

Mine works ok with wifi off or on, but if you leave it lose the Access Point after you shut the cover, it won't magnetic wake. Also if you leave it over night, sometimes it won't wake the first thing in the morning. After the first wake it is fine. If I turn on Bluetooth, that behavior goes away.
You might want to try booting into safe mode and see if the same thing happens:
http://forum.xda-developers.com/showthread.php?t=2397282

The longer mine sleeps the longer it takes to wake it up. I set to toggle WiFi off when sleep. I will test how it works, when it stays on, though this should be a bug.
Sent from my Nexus 10 using XDA Premium 4 mobile app

don't wake up with magnetic
Same bug. I think
I will try to keep bluetooth on. (To save battery in sleep mode)

mine work on both states

yes, i found this bug from day1 (I bought the LTE just within 1 week and keep finding the scenario)
It didn't has this problem from previous Nexus 7.
If you turn on Wifi or BT, then your smart ON / OFF will work all the time.
I think may be these wireless communication setting causing the awake more sensitive. if all turn off, then N7 will deep sleeping and cannot awake by smart cover.

hkfriends said:
yes, i found this bug from day1 (I bought the LTE just within 1 week and keep finding the scenario)
It didn't has this problem from previous Nexus 7.
If you turn on Wifi or BT, then your smart ON / OFF will work all the time.
I think may be these wireless communication setting causing the awake more sensitive. if all turn off, then N7 will deep sleeping and cannot awake by smart cover.
Click to expand...
Click to collapse
i have a inventcase cover and i try turn on bluetooth and wifi, and not work.

Related

wifi power saving policy

I want my desire's wifi goes to sleep when i lock the screen; therefore i set the option to "after 15 minutes". However, when i woke up several times during last night >.< to find that every time when i turn the screen on, i could see the wifi was still on. what should i do? thanks
WiFi
Try installing Juice Defender from the Market. Works for me.
have the wifi and 3g on off buttons as widgets on one of the home screens, and turn them off easily when not needed, like sleeping, takes a few seconds to reconnect, saves alot of battery for me
Try installing Juice Defender from the Market. Works for me.
Click to expand...
Click to collapse
thanks for the alternative. I wish the generic option can work as it is supposed to
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk
have the wifi and 3g on off buttons as widgets on one of the home screens, and turn them off easily when not needed, like sleeping, takes a few seconds to reconnect, saves alot of battery for me
Click to expand...
Click to collapse
thank you for this. just curious, if we have to use widget to control the connection, what is the policy designed for? do I misunderstand the purpose of that or it IS not functioning rightly?
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk
the policys are for automated controls, so its meant to turn off after 15 mins or whatever, i keep it as a widget so i can turn them on and off manually as i generally have the wifi or 3g on all the time for gtalk etc
i turn the 3g off when going under ground, sleeping or in a meeting where i wnt be needed it. its easier to do manually then wait for the automated to kick in in my oppinion
TurkzZ said:
the policys are for automated controls, so its meant to turn off after 15 mins or whatever, i keep it as a widget so i can turn them on and off manually as i generally have the wifi or 3g on all the time for gtalk etc
i turn the 3g off when going under ground, sleeping or in a meeting where i wnt be needed it. its easier to do manually then wait for the automated to kick in in my oppinion
Click to expand...
Click to collapse
i do want it automatically turn off the wifi for me. i think my problem is that even i set it to "after 15 mins", the wifi is still on even after 20 or 30 mins after i turn off the screen.
Usually it will stay off until you awaken the screen (phone) by which time it will try to re-enable itself for your convenience.
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk
i tried the setting in Nexus as well. In Nexus, it is not "after 15 mins", but "when screen turns off". unfortunately, even you check the wifi status after you turn off the screen 10 mins later, the wifi is still on.. totally no idea how that is supposed to work..
How are you checking whether the WiFi is on? By waking it up again, or seeing whether it is connected to your router?
TurkzZ said:
have the wifi and 3g on off buttons as widgets on one of the home screens, and turn them off easily when not needed, like sleeping, takes a few seconds to reconnect, saves alot of battery for me
Click to expand...
Click to collapse
Yes that works for me to, just a simple quick press on or off and no worries about it using battery life when you dont want it to.

[Q] Automatic wake up when connecting power or USB

I'm running Nova and CWM9 and whenever I connect the phone to USB or a charger the phone wakes up automatically forcing me to push the power button evey time I connect it to turn off the screen.
Anyone know if it's possible to disable this "feature"?
Thanks!
I believe stock does that too. That would be an interesting tweak if it's not already around! In terms of disabling, I'm not sure there is an option to do so.
Sent from my GNex running gummy v0.7.0
Confirm stock does it as does Apex; presumably it's set somewhere basic in ICS
Its in developer options. Untick 'stay awake' (if I understand the question!)
Sent from my Galaxy Nexus using XDA App
And this is a problem why? Its just indicating to you that its plugged in properly and charging... the screen will time out and turn off a few seconds later.
Thanks for checking!
It is interesting that Google would assume everytime you plug the phone in (and unplug the phone) you would want it to wake up. Considering the short battery life these phones have, lots of charging would be commonplace and therefore lots of connecting/disconnecting without the intent to actually use the phone.
I could see giving people the option to have the phone do that - but for me the unplug wakeup is especially annoying because I have to turn it off everytime I go to put it in my pocket.
cyberfreak95 said:
Thanks for checking!
It is interesting that Google would assume everytime you plug the phone in (and unplug the phone) you would want it to wake up. Considering the short battery life these phones have, lots of charging would be commonplace and therefore lots of connecting/disconnecting without the intent to actually use the phone.
I could see giving people the option to have the phone do that - but for me the unplug wakeup is especially annoying because I have to turn it off everytime I go to put it in my pocket.
Click to expand...
Click to collapse
Well considering by stock there's no charging LED indicator, turning the screen on momentarily to indicate a charging state is a smart idea.
Also, if you're plugging it in, why are you worried about the battery drained by keeping the screen on for 10 seconds? 10 seconds.
martonikaj said:
And this is a problem why? Its just indicating to you that its plugged in properly and charging... the screen will time out and turn off a few seconds later.
Click to expand...
Click to collapse
Well that's that I thought too, but sometimes it doesn't go back to sleep like it should and I'll notice my pocket getting quite warm pull it out and it's still on.
It could be a bug in the ROM I'm running (not going to sleep correctly all the time) but I don't remember my DINC doing that so I figured it was something that just needed to be disabled.
killyouridols said:
Its in developer options. Untick 'stay awake' (if I understand the question!)
Sent from my Galaxy Nexus using XDA App
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Click to collapse
Hmm, I did have this option enabled - mainly because when I connect it to the charger I do like it to stay on -prime example using Slacker Radio in my car when plugged into the dock.
Maybe I'll try a different ROM since it seems the problem isn't so much that I need to disable to wakeup on connect/disconnect but instead I need the sleep function to be more reliable so I don't have a mini oven on my pocket.
Thanks!
A great option for your car dock needs would be to introduce something like the app Tasker. Then you could leave the screen off but have tasker set it to constant on and load slacker when the Bluetooth connection to your car happens.
Sent from my Galaxy Nexus

Wake lock - phone/rild

So I've been working to get as much battery as possible out of my device. Just today, I left my phone with wifi turned off on my desk and sync on, and it idled down only 1% over the course of 2.5 hours. Great, that's almost better than in gingerbread. The minute I turn wifi on and let it idle, my new wake locks are coming from "phone" and process "rild" in GSam. Any thoughts what these ones are?
Sent from my SPH-D710 using XDA
I've tried searching but it's tough to search wake lock and "phone" since it's such a vague term, but seems to be a specific piece of Android that GSam is reporting on.
Rild seems to be a radio interface layer or something related to 3g/4g,but why would that even be attempting to wake the phone when wifi is on? Isn't that portion of data turned off when on wifi?
Sent from my SPH-D710 using XDA

[Issue] Display turns on periodically by itself

I've got a small issue with my N7. Since I bought it, my display turns on periodically without touching it or hitting any of the buttons. It seems, that the time periods inbetween are always the same (e.g. today its always 24 minutes after a full hour when it turns on). It just displays the lock screen and turns off again.
Is there a possibility to find out which app or service is causing this? As far as I can observe, there are no notifications coming in which could potentially turn on the screen.
I'm on stock 4.3 and switched meanwhile from the stock kernel to that one by faux123 (problem occurs with both kernels)
Thanks for your help!
The screen does not turn off
The problem with my N7 Wi-Fi is that the screen does not turn off. On the Nexus 10, the screen turns off within a minute.
On phones and the Nexus 7, when plugged in, the screen never turns off. Many customers have been complaining that the screen turned off at unsuitable times, so I think Google went crazy with it.
On my Nexus 7, the display is turned on by incoming Sipdroid calls.
What you can do is to look at logcat, but it will cost you tons of time to figure it out.
It occurs to me while the tab is unplugged. Perhaps i check if it also occurs in flightmode. Then i could see if wifi or an other connection is the problem!
Sent from my Nexus 7 using xda app-developers app

odd issue with my case's wake/sleep function.

Hi guys
I just wondered if anyone else has a case with the magnetic wake sleep function and finds it doesn't always power on the screen straight away when opened? Mine seems to work well when I'm connected to my network via wireless. If I am out and about with no wifi then when I open it up it can take up to a minute before the screen comes on. It like the device goes in to a deeper sleep when it has no network.
I thought the case was actually broken when trying at my mums tonight . But after I had tethered from my mobile its been working fine.
Cheers
Well, I don't have a magnetic case to test, but are you sure it isn't your kernel?
teh roxxorz said:
Well, I don't have a magnetic case to test, but are you sure it isn't your kernel?
Click to expand...
Click to collapse
I'm just running stock at the moment.
It's normal, seems to happen to many others. What is your wifi setting for when it is in sleep mode?
I have it set to always on. It only happens when I am out of range of my wireless and it has no signal.
Until/if Google pushes a fix try enabling Bluetooth as a workaround. That seems to work for me even with no Bluetooth devices connected and has very little impact on battery life judging from the mAH readings from Battery Monitor Widget.
If you look around the forum, you would know this is a "well-known" issue with the tablet.
Just keep BlueTooth on for now fix the problem ... and wait for Google to release a fix (if ever).
Thanks guys
I have turned on Bluetooth now and will give it a go

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