[Q] Is the CPU active during BLN Notification? - Nexus S Q&A, Help & Troubleshooting

Quite curious as I am under the assumption that when the phone is in DEEP SLEEP, the CPU is powered down to conserve battery. However, if BLN is active with blink notification how is blinking controlled?
On a related note, does no blinking save or not save any battery life?
EDIT: Sorry, I meant DEEP SLEEP. DEEP IDLE is so frequently used on the forums I mistaked it in this post.

AeroEchelon said:
Quite curious as I am under the assumption that when the phone is in DEEP IDLE, the CPU is powered down to conserve battery. However, if BLN is active with blink notification how is blinking controlled?
On a related note, does no blinking save or not save any battery life?
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first of all, i think you dont understand what deep idle is. deep idle is a very low power state where your cpu IS active. for example, its used when you are listening to music with your screen off. deep sleep is when your cpu is in a hibernating state, when your phone isnt active and the screen is off. deep sleep is the ideal state to save battery. but when your cpu is active, deep sleep isnt possible. the next step up is deep idle(not all kernels have this as it also is guilty of causing issues for some phones). when the soft keys are blinking, this does wake your phone from deep sleep.

simms22 said:
first of all, i think you dont understand what deep idle is. deep idle is a very low power state where your cpu IS active. for example, its used when you are listening to music with your screen off. deep sleep is when your cpu is in a hibernating state, when your phone isnt active and the screen is off. deep sleep is the ideal state to save battery. but when your cpu is active, deep sleep isnt possible. the next step up is deep idle(not all kernels have this as it also is guilty of causing issues for some phones). when the soft keys are blinking, this does wake your phone from deep sleep.
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Ahh! That was my mistake. I definitely do know what DEEP IDLE is. I meant DEEP SLEEP. (I know it doesn't help when I put it in caps.) DEEP IDLE is an additional state introduced by Ezekeel as an intermediate state between DEEP SLEEP and IDLE. I understand.
Regarding my question, does that mean your phone is not in sleep while blinking is occuring? It seems like such a waste of battery.

AeroEchelon said:
Ahh! That was my mistake. I definitely do know what DEEP IDLE is. I meant DEEP SLEEP. (I know it doesn't help when I put it in caps.) DEEP IDLE is an additional state introduced by Ezekeel as an intermediate state between DEEP SLEEP and IDLE. I understand.
Regarding my question, does that mean your phone is not in sleep while blinking is occuring? It seems like such a waste of battery.
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thats one reason i dont use it. the other is that i would rather check for notification on my time

simms22 said:
thats one reason i dont use it. the other is that i would rather check for notification on my time
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Thanks simms22 for your quick response.
Actually on the topic of deep idle, it seems if the CPU was active to blink the LEDs, deep idle state seems like the perfect candidate.

AeroEchelon said:
Thanks simms22 for your quick response.
Actually on the topic of deep idle, it seems if the CPU was active to blink the LEDs, deep idle state seems like the perfect candidate.
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it could very well be, but maybe not

Blinking keeps the phone awake (excessive battery drain, deep idle helps but it's not worth it still). If you keep it static and on, the phone will happily go into deep sleep (this is how i set mine up).
You can test this with CPU Spy if you like, these are my findings.

Related

[Q] Battery loss during standby. . .

Is anybody seeing heavy battery loss during standby mode?
On average my TF is losing between 3.5 and 5% battery in standby mode. I have done a few tests with and with out airplane mode and it does not change.
I currently have an RMA setup with ASUS but I dont want to have to send it back and wait 14 days, so I wanted to reach out here first.
Thanks in advance,
Brandon
Every device I've ever owned has lost power during standby. That's the tradeoff. Otherwise, you could, you know...turn it off?
Windows has that nice "hibernate" hybrid.
It's totally not worth an RMA...don't let your OCD win.
There are a few processes that run in the background like Android OS, WiFi, keyboard etc. It needs to be reactive to certain signals so it can't be off completely. The iPad has amazing stand-by times but I don't know why. I just saw it when I borrowed one for a day from a friend.
I would NOT RMA my device unless it's a significant drop in battery life (>10%/h); it's just the way it is mate!
But what I realized is after I rooted, installed SetCPU and set the governor to ondemand the battery life has increased significantly. It idles at 216MHz now.
mine doesn't have a great standby time either, pretty bad actually when you compare it to my xoom. however its an issue that should be fixed with a software update and it shouldn't require an rma.
Sent from my ADR6400L using Tapatalk
Check if you have your Wifi on sleep also?? Depending on number of applications that you use for updating it might be using your battery.
There are a number of other threads already discussing the issue of battery life in standby, but here's my conclusion: the TF has an issue with wifi that if you set it to stay on while the TF's screen is off (a setting in the wifi section of system settings), it burns quite a bit of battery while on standby. If you set it to turn off when the screen is off, then it doesn't.
I know this is a bug with the TF because the Xoom does not exhibit this behavior. It burns less than .5%/hour when on standby with wifi set to stay on when the screen is off. The TF gets this same performance (<.5%/hour burn) on standby only if wifi is set to turn off. Otherwise, I'm getting the same as you: around 3.5%/hour burn rate.
I'm assuming that the TF's wifi just doesn't enter whatever low-power state it's supposed to enter while on standby. My second assumption is that this is something that will get fixed in an update.
Sent from my Transformer TF101 using Tapatalk
I just turn on airplane mode when I know it is going to sit, and it burns about 1% an hour.
wynand32 said:
There are a number of other threads already discussing the issue of battery life in standby, but here's my conclusion: the TF has an issue with wifi that if you set it to stay on while the TF's screen is off (a setting in the wifi section of system settings), it burns quite a bit of battery while on standby. If you set it to turn off when the screen is off, then it doesn't.
I know this is a bug with the TF because the Xoom does not exhibit this behavior. It burns less than .5%/hour when on standby with wifi set to stay on when the screen is off. The TF gets this same performance (<.5%/hour burn) on standby only if wifi is set to turn off. Otherwise, I'm getting the same as you: around 3.5%/hour burn rate.
I'm assuming that the TF's wifi just doesn't enter whatever low-power state it's supposed to enter while on standby. My second assumption is that this is something that will get fixed in an update.
Sent from my Transformer TF101 using Tapatalk
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+1 on this. Looking forward to the updates
wynand32 said:
There are a number of other threads already discussing the issue of battery life in standby, but here's my conclusion: the TF has an issue with wifi that if you set it to stay on while the TF's screen is off (a setting in the wifi section of system settings), it burns quite a bit of battery while on standby. If you set it to turn off when the screen is off, then it doesn't.
I know this is a bug with the TF because the Xoom does not exhibit this behavior. It burns less than .5%/hour when on standby with wifi set to stay on when the screen is off. The TF gets this same performance (<.5%/hour burn) on standby only if wifi is set to turn off. Otherwise, I'm getting the same as you: around 3.5%/hour burn rate.
I'm assuming that the TF's wifi just doesn't enter whatever low-power state it's supposed to enter while on standby. My second assumption is that this is something that will get fixed in an update.
Sent from my Transformer TF101 using Tapatalk
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Is there an adjustment for the Wifi and/or app settings. In general the second or third largest power consumer in these devices is the radios. The radio needs to be powered up whenever a connection needs data. This can be for keep alive messages that verify the existence of a wifi connection to an access point, or from an app such as gmail, calendar, etc. checking for new data. In any case there may be settings that allow one to decrease the frequency of these operations.
ssj4vegita2002 said:
I just turn on airplane mode when I know it is going to sit, and it burns about 1% an hour.
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FYI, I did a few tests with airplane mode on and I was still losing around 3.5%-5% battery life.
I did do a few more tests, and my most recent test I found interesting.
I use my TF as usual and had a few applications running, I then turned off the screen and let it sit for an hour and 4% battery life was used.
Then I powered down my TF fully, then I powered it back up and turned off the screen. (Currently the TF is up and running but no applications have been opened aside from backround apps Syncing).
I put the TF into standby (turned off the screen) at 1:37 am and I had 53% battery life.
I checked on the TF in the morning at 8:51am, and I had 51% battery life.
So in just over 7 hours my TF only used 2% battery life in standby which is a very acceptable range.
Conclusion, what ever apps we are opening and using under normal use are not being fully closed out, and are running in the backround, not the backround services as per the airplane mode test.
I will do a few more tests tommorrow, I hope this helps and I look forward to others feedback!
Brandon
Brandon - Please check out yours with wifi set to turn off when the screen is off. In all of my testing (similar to yours), that made the difference between great standby performance (<.5%/hour) and not-so-great (3.5%/hour or more). Nothing else seemed to matter, including manually turning off just about every app that normally runs in the background and verifying that they stayed off.
Hopefully soon Asus will also fix the battery stats bug so that we can see what apps/system components are actually using power on standby. Or they'll just fix wifi so that it sleeps as it should.
Sent from my Transformer TF101 using Tapatalk
I have already done the tests with WIFI turned off and also with the TF in Airplane Mode.
So far the only time I have gotten great standby time was when I rebooted my TF and did not open any applications. (WIFI was on FYI)
Brandon
so, the last two night i've gotten great result from stand by mode. The first night i went and killed couple of programs, before putting in AP mode for the night. 12:45 am till 9:00 am from 78% 75%. Last night at 12:00am had 34% this morning at 8:00 it dropdown to 32%.
I took a screenshot of the battery usage after waking up in the morning. Wifi was left on with the sleep policy set to sleep on screen off. It seems to turn back on intermittently but the awake bar seems to happen more often the longer it is in sleep. Is that meant to happen? What does awake signify? That the screen is on?
background data probably running in the background
like weather updates to it to refresh every 4 hours or something
its weird though, towards the right theres like 2 times where the device is awake for long periods of time :S
brandonpaz said:
Is anybody seeing heavy battery loss during standby mode?
On average my TF is losing between 3.5 and 5% battery in standby mode. I have done a few tests with and with out airplane mode and it does not change.
I currently have an RMA setup with ASUS but I dont want to have to send it back and wait 14 days, so I wanted to reach out here first.
Thanks in advance,
Brandon
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Would you try "Task killer" for decreasing battery loss?
My battery seems to be dying alot quicker now I have the dock. Hopefully a new firmware will come out that'll lower the battery consumption of the dock when its in standby.

[Q] deep idle removed?

i wonder why deep idle is removed in every updated kernel...anyone has the answer...?i think deep idle is one good tweak in saving battery while we close our eyes sleeping..
Because some say it didn't work.. I dont know, because I didnt know what it did before it was removed
Greetzz, Jojoost.
Sent from my Nexus S using XDA App
..
is it?i think its work for me...without it, my battery drain quickly like 20 to 30% while in idle mode...i hv to recharge it back after i wake up in the morning...i think one of the problem is the ics 4.0.3 right...bcoz in ics 4.0.1 deep idle seems to be working fine and my battery last 20 hours with it..
mijul mojas said:
i wonder why deep idle is removed in every updated kernel...anyone has the answer...?i think deep idle is one good tweak in saving battery while we close our eyes sleeping..
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Deep idle did Not conserve battery while the phone is inactive - it only reduces power consumption while the screen is off and the phone is playing music, etc.
Have you ever actually read about the function and purpose of deep idle? CpuIdle seems to have replaced it.
mijul mojas said:
i wonder why deep idle is removed in every updated kernel...anyone has the answer...?i think deep idle is one good tweak in saving battery while we close our eyes sleeping..
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Ok, for one deep sleep is where phone should be when it is not used.
I always wanted to ask: whatever happened to this crazy idea of charging the phone when it is on some desk in the house for a few hours?
I am fairly certain you will find your phone is awake when you sleep, doing stuff it shouldn't be doing.
When it is just laying on the desk, a drain of 5-10% /hour means it is not in deep sleep, something on rom or apps is broken. deep idle would not fix that, deep idle may however help mask the real problem that keeps the phone from reaching deep sleep.
deep idle, the way you use it is like buying a can of flat fix for the car tire but leaving the object that still sticks out 2" beyond your tread in the tire, causing continued damage to the tire, it gets you by, but won't last forever and the guy who really fixes your flat will not smile at you once he sees the sticky inside of your wheel.

[Q] Can't figure out what's eating my tf700's battery?

Hi all,
My new tf700's battery is draining while sleeping.
I tried Don's airplane mode, unchecking Activate Wi-Fi while screen is off, checking disconnect Wi-Fi while screen is off, yet nothing works!
~5% drain per 7 hours.
The battery stats show that ~11% of the system resources go to waste because of "System Idle"...
This is despairing.
Please help.
Even a device that is sleeping consumes power. Personally, I do not think that about 5% per 7 hours is that bad -- is it? I would recommend installing BetterBatteryStats and then have a few charging cycles to see what's happening inside. (It may be an app that's going amok, and that may not be reproducible with a single run.) The standard Android battery report I do not trust.
5⅝ isn't that bad really. There are some extra power saving options and if rooted you can enable deep sleep.That'll give you 1% - 2% overnight.
What's your screen set to? IPs or IPS+?
Which CPU mode?
Is it very cold? Cold drains a battery faster.
sbdags said:
5⅝ isn't that bad really. There are some extra power saving options and if rooted you can enable deep sleep.That'll give you 1% - 2% overnight.
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Don't need root for that, mine does 2% in 4 days if i leave it alone...
ShadowLea said:
What's your screen set to? IPs or IPS+?
Which CPU mode?
Is it very cold? Cold drains a battery faster.
Don't need root for that, mine does 2% in 4 days if i leave it alone...
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Click to collapse
IP (not IPS+).
Battery save cpu mode.
Normal Temperature (~20 celsius)
How can u enable deep sleep in root?

Spends too much in in 400mhz speed

My phone half of the time stays at 400MHz.
Is that normal?
even when is idle and screen is switched off. battery life is not that good though i am not sure if it should be better on an S6,
I am rooted and I have uniKernel.
Note that I do have Deep sleep but only like half of the time even when my phone display is off.
Phone CPUs adjusts their speed depending upon the need to conserve power.
bebseh said:
My phone half of the time stays at 400MHz.
Is that normal?
even when is idle and screen is switched off. battery life is not that good though i am not sure if it should be better on an S6,
I am rooted and I have uniKernel.
Note that I do have Deep sleep but only like half of the time even when my phone display is off.
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Click to collapse
If you mean you have no deep sleep you can root and download BetterBatteryStats or Wakelock detector to see what is causing the wakelocks.
GSM battery monitor works without root, but you can't see the wakelocks, but you can see what apps are draining your battery.
Faspaiso said:
If you mean you have no deep sleep you can root and download BetterBatteryStats or Wakelock detector to see what is causing the wakelocks.
GSM battery monitor works without root, but you can't see the wakelocks, but you can see what apps are draining your battery.
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Click to collapse
Hello
I do have deep sleep, pbbly +50% of the time,
However it does spend quite some time in 400mhz even when is idle.
is this normak ? i dont remember seeing the same behavior on my Note 3.
bebseh said:
Hello
I do have deep sleep, pbbly +50% of the time,
However it does spend quite some time in 400mhz even when is idle.
is this normak ? i dont remember seeing the same behavior on my Note 3.
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Click to collapse
Well I have 98-99% deep sleep buy I'm also on a custom kernel + Rom without all the battery hungry apps like Facebook, messenger, Spotify and so on, so only thing that wake my phone from time to time is Google play services.
On stock Rom I mean I had around 50-70% so if you're using a lot of battery hungry apps (that wake your phone a lot) I think it's normal.

Deep sleep only 1.5%, Idling at 400Mhz almost 60%

Fully stock SM-N920P. Only seeing 1.5% in Deep sleep since buying the phone. Average between 55% - 60% at 400Mhz. Something's off (IMO). I use System Monitor, GSam Battery Monitor, etc and Android System seems to account for the most battery drain which I think is OK. Screenshots attached. Any idea how to get the Deep sleep time up?

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