yashsingh1/xdaforums huggingface dataset:
[Asus  Eee Pad Transformer Prime] uapyro:
I noticed mine got warm too. personally I don't exactly care about the warmness, or the "reduced battery life", I just mainly want the tablet to stop freezing and rebooting.
[Asus  Eee Pad Transformer Prime] buxtahuda:
Ok, update after the night.

Went to bed with 86%, woke up with 77%. Usual settings, Power saving, no IPS+, no BT, yes WiFi, no GPS, lowest brightness; as if it matters. All but about twenty minutes was in Deep Sleep, with that twenty I guess being some updating at 475 MHZ (that's right... all four cores, at 475 MHZ...). Seems excessive use for anything while the device isn't being used. I don't see how some are saying that keeping it constant even at a higher clock will still help battery-life; 100 MHZ on one or two cores is going to use less battery than 475 MHZ on four! There is no way four times the resource on four times the equipment can use less!

11% is so much better than some are doing. But ASUS has taken away my warm fuzzy feeling I used to have for my Prime; I used to wake up to something like 3% having been drained...
[Asus  Eee Pad Transformer Prime] G37:
Most of these issues are a tough thing for Asus to catch, partly because the blame can be held on nvidia's shoulders. How many other ICS devices are out there? Not too much. None the less, catching these very specific issues are close to impossible.

Thats why other OEM's take such a long time to upgrade to the next OS version. The quality assurance involved on top of their own (Lord forbid TouchWiz) ICS/HC customization would take eons to test and approve (and it does take eons!)

So here we have Asus practically in bed with nvidia trying to pump out fixes that handle our problems (and that by itself is a great thing) to fix more urgent problems.

Anyways my post is not very useful technically. I've been sifting through the posts and maybe I missed it, but does anyone have a battery drain tool that allows them to see the CPU time for certain applications over time?
[Asus  Eee Pad Transformer Prime] trent99:
mine has been rebooting a lot since 1.13

it's very annoying when i'm trying to read something and it just reboots on its own!

i've noticed it happening a lot today. i thought it was only 3 times in the last day since updating to 1.13, but in the last hour sitting here on my couch, it has rebooted 3 more times!

so who knows how many times it has actually been.

the only running app has been chrome, i just open it so i can see if it rebooted and killed it.

not sure about battery life, may be a bit worse but it will be hard to check with the device constantly rebooting.

hopefully another update is made soon because the device is very annoying to use at this point, although not completely unusable.

i have about 30 days left before my return window is up at best buy but might return it sooner if a fix isn't made quickly. this update really shouldn't have been pushed.
[Asus  Eee Pad Transformer Prime] nyijedi:
This issue is that for many of us, whatever asus had done with nvidia for the. 11 firmware worked great. Come on asus, GIVE IS BACK. OUR OLD WORKING FIRMWARE.
[Asus  Eee Pad Transformer Prime] G37:
Read your PMs. It's most likely that Gary is trying to contact you.
[Asus  Eee Pad Transformer Prime] SpecialK17:
Newest update is killing me. Prime used to work perfectly. Now rebooting every 15 minutes. Went to bed with it at 85% woke up annoyed to find only 8% left.
[Asus  Eee Pad Transformer Prime] trent99:
I don't have any PM, but if Gary Key wants to contact me to offer a potential solution, I'd be open to that.

I haven't seen sleep of death yet, but i have noticed that when i hit the power button there's about a second of lag before the screen turns on. That's new since the update.

Ok I'm posting this on my prime now, better hit post before it reboots on me!
[Asus  Eee Pad Transformer Prime] nyijedi:
I just sent Gary a PM. This battery drain has made my tablet borderline useless as far as traveling with it. The battery life was awesome on .11. I am so frustrated right now. JUST GIVE US BACK .11, ASUS. IT'S NOT THAT FRIGGIN' HARD. MY TABLET IS USELESS THANKS TO YOUR "FIX."
[Asus  Eee Pad Transformer Prime] edster00:
What is strange to me is that the sleep of death, reboots etc. seem to be so random between Primes, no wonder it is hard to come up with a fix. I have had no problems waking my Prime or any reboots since the .13 update, yet many of you have. My battery does seem to drain quicker during use now, but I only lost 3% overnight while the Prime was in sleep mode.

I have a C1 s/n and I have not installed Chrome; I might install it today but I really don't want to have these issues start up and not be able to get rid of them later...
[Asus  Eee Pad Transformer Prime] demandarin:
This is the tool you want. Its called Better Battery Stats n made by a fellow xda member.

Here's the link

http://xdaforums.com/showthread.php?t=1179809
[Asus  Eee Pad Transformer Prime] Lock-N-Load:
I wanted to post up some new details after last nights test as I saw some interesting changes in my second round of tests last night, I cannot explain them just reporting them in the interest of be fairing and reporting all results I get....

From 11:30am until 9:52pm yesterday I saw 19% drop with off an on usage. Expected really. BUT, from 9:52pm until 7:52 am I saw only a 5% drop this time over night while in sleep.

Nothing like the 23% I saw the night after the OTA.

I did 3 things:

1. restarted

2. removed Chrome

3. stopped 1 app that I saw made 15000 “Alarm” calls as shown by Better Battery Stats

Did these matter? I am not sure if so and which one. Chrome was

never

listed as an app with run away battery use - hell, it was never listed. The app that made the 15000 “Alarm” calls was not even listed as an app using battery either, but comparing it's "Alarm" calls to the other apps making "Alarm" calls like Tasker, it was 3-4 times more so seemed way high so I killed it.

Since off the charger, on this round of testing, I see 30% at 475 and 62% in Deep Sleep. Still showing, IMHO, I am hanging out in a 475 range where I bet I would only be in the 100-300 range I was previously given the tasks I mostly do (I am not a game player of movie watcher). So, I still think that is high and we need back our low and states or some compromise well below 475. Since nothing in Better Battery stats stands out as some kind of rogue app or process, I really believe this default low end stat of 475 when in sleep (before Deep Sleep kicks in) or for doing just general tasks is part of the problem. Just no reason to be that high of lowest end state IMHO.

So, I wonder if some kind of restart needs to be made after the OTA restart to further clear some running services or open processes or something as I simply cannot account for a 23% drop to 5% over something like #1-3 above?

BTW, I had also turned off system sounds right after I did the OTA as I saw AudioOut_1 was 4-5 times higher (10.8%) then the next closest partial waeklocks (that hover around .07-2.9%) and so it has been off during both tests. I now plan to turn it back on as I WANT my system sounds and see how that affects battery.

BTW2, I run in Power Savings with no IPS most al of the time. However, that should not be an issue as we are talking about during sleep, but just saying. I use Tasker to shut of wifi, GPS, BT, sync IF they are running at 10:30pm and did for both tests. I NEVER had reboots or wake issue like otehr before this. So, this 5% last night versus the 23% is what I would have expected. I simply cannot explain, other than those 3 changes, would have caused that initial overnight 23% drop.
[Asus  Eee Pad Transformer Prime] demandarin:
Damn! Some of these battery drains overnight night being reported is crazy. Damn! That is really bad. No reason it should be draining like that. All just very weird how its affecting some n not others. Its as if your device is never really going to sleep. Something is constantly running and taxing the system and keeping it mostly awake. Have you all tried Better Battery stats to see exactly what's keeping it n Awake or wake lock state? I know its the update overall that caused this but we need to find out what exactly about the update is making the drain. Even the raising of lower frequency a couple hundred MHz won't cause drain like you're reporting. Something else OS going ln in there also that changed with update.

Here is link to Better Battery Stats app. It'll be very useful in trying to pinpoint exactly what is keeping your device n not able to really deep sleep for long periods of time.

http://xdaforums.com/showthread.php?t=1179809
[Asus  Eee Pad Transformer Prime] PolishPoet:
No drastic power drain, no reboots no lockups. I'm running under Balanced mode with brightness set to auto. Went to sleep with battery at 77%, 8 hours later it was at 74%. Woke fine. See attached CPU Spy. Again I am amazed at the differences in units. It's almost like these were produced at several different locations with each procuring parts from different sources. I'm glad I've got the one I've got.

Proud owner of a Transformer Prime on Tapatalk.
[Asus  Eee Pad Transformer Prime] demandarin:
Good findings. I've been trying to study my better battery results also. One thing I'm noticing is that something new seems to prevent device from sleeping for long periods. If you look at your Awake time(TIME device is awake with screen off) vs. Screen on(time device is awake with screen on) time, the Awake time is supposed to be lower than Screen on time.

Another good point or possibility is about maybe a reset or reboot needed to clear things or make battery behave more normally. I remember right after update I reapplied my overclock n device rebooted after a while. Maybe this is why I haven't experienced the excessive battery drain like others. I usually shut down n restart my device every now n then to clear overclock or to get a fresh start on RAM.

One thing though, I'm really liking that battery app. Its showing that something through out the night iS constantly waking up the prime to perform whatever functions its programmed to do. Although my battery life is seeming good, I know I've seen it better. My awake time is more than screen on time and really shouldn't be.
[Asus  Eee Pad Transformer Prime] Lock-N-Load:
Why is Awake suppose to be lower than Screen time. Mine, like yours, is that way but it makes sense to me. Would "Awake" not mean before Deep Sleep so of course it would be higher than Screen Time?
[Asus  Eee Pad Transformer Prime] mmilestone:
After doing a factory reset last night and leaving it as is {no app re-installs) I lost 12% in 6 hours of idle state(from 92 to 80% charge).

Despite the fact that Tegra 3 was touted as less of a battery hog, my all-apps-installed Tegra 2 OG Transformer lost only 4% in 9 hours of idle overnight.

I know, there are those happy with this device and update who would say I'm trying to convince them something is wrong with their device.

But at this point, given the facts (CPU lower speeds locked,etc.) the update did nothing to conserve my device's battery life - be it at base install or with apps re-installed.

Those are the facts I found. If anybody has doubts feel free to do the same experiment. Factory Reset. Do not install any app. Don't even put your Google log-in.

The power loss may vary from one device to another but it is not going to be better than the TF101.

Still, this update did improve my GPS and Wi-Fi (rarely use BT). My GPS was useful and maintained lock inside a moving vehicle and Wi-Fi is now 5 to 10dBm better than before.
[Asus  Eee Pad Transformer Prime] gbcrush:
So yes, battery drain?

I've posted some of my issues in the "Strange sleep issues" thread, but since this one is getting some attention, I thought I'd share my next post here.

More about trying to share data and anecdotal evidence than I am about beating horse (dead or alive). However, just so that you can see my experience:

Yesterday, after enjoying the heck out of me .13 build prime (with the sleep issue) I charged it back up and went to bed. I called it quits somewhere between 12:00 am and 1:00am, but before that I had:

- Wall charged my transformer prime to 100%

- Powered OFF my transformer prime

- Powered ON my transformer prime

- Verified that its status was still Charged 100%

- Unplugged it from the wall and let it sit on the shelf to go to sleep.

I slept almost a good eight hours, woke up earlier than I planned to, and drove off to do some unexpected class teaching. I returned home, showered and it's now 12:00 pm in the afternoon. At least a good 11 hours since anyone touched the tablet.

I pick up the tablet and its:

- Warm to the touch, like its been running apps all day, not that nice icy cool that says its been sleeping peacefully.

- In super deep sleep. I have to hold the power button down longer than 10 seconds to get it to reboot-up.

- Almost completely drained once it powers up.

Here's the screenshot from the battery page:

87% battery loss on 33 seconds of up time? I don't have the cause, but I've got something that points to abnormal battery loss during "sleep."
[Asus  Eee Pad Transformer Prime] buxtahuda:
Wow!

AudioOut_1

1013

31 m 29 s (1889 s) Count:21 68.1%

Geez... Suppose I'll try without system sounds at some point as well.

No Alarms yet. Nothing in Kernel Wakelocks.

My Awake is also greater than Screen On, WiFi has been active entire time (says 99.9%)
[Asus  Eee Pad Transformer Prime] trent99:
Thanks for the battery stats app, I'll give it a full charge and post what i get. My prime usually lasts 2 days with typical usage, today is 12 hrs and down to 15%.
[Asus  Eee Pad Transformer Prime] demandarin:
WhaT's also important is the count. Which is how many times that process or app activated. I saw facebook had a count over 130..lol. I have since went in a cut notifications or update off on it. Its contributing. I noticed the audioout1 on mines also. Plus WLAN wake amd WoW(whatever that is). Something is constantly keeping the primes from a true lomg sustained deep sleep now.

Edit: you just made me realize somthing. The audio deal is caused by system notifications constantly going off thru the night. Whether it be email or facebook notifications. Even I'd device asleep, a new email or message will cause it to go off sounding the audio sound. Then this probably wakes up again out o deep sleep. Then prime goes back to sleep n process constantly restarted over again. Hence one good reason prime never stays asleep lomg..

Thanks!
[Asus  Eee Pad Transformer Prime] Lock-N-Load:
Not a chance in hell I am reading all of that, give me the condensed version.

---------- Post added at 09:45 AM ---------- Previous post was at 09:42 AM ----------

My AudioOut_1 was 10.8% and by far far far the highest - next closest was 2.8%. So, I turned off system sounds. I have them back on now to see how it affects battery life as I like system sounds. They were off for both me last 2 days test.
[Asus  Eee Pad Transformer Prime] buxtahuda:
Lol, I just looked at the pretty diagram ^.^
[Asus  Eee Pad Transformer Prime] demandarin:
Basically if your awake time is not less than your screen on time, then that means your tablet is not reaching the Optimal deep sleep. Something is causing it to wake up or not stay in optimal deep sleep for long consistent periods of time. Prime constantly waking up. This could be due partial wake locks or kernel wakelocks. If its neither of those then you have to look at your apps settings or other settings on tablet.

Makes perfect since how my Facebook or email notifications is constantly going off thru the night(since I always leave wifi on. Even in deep sleep the system sound notification(audioout1) will go off letting you know system just updated with new info. Now if this is constantly going on thru the night then that means prime is constant waking up n going back to sleep. Therefore not allowing a long consistent state of deep sleep.

Battery drain can be blamed on higher low speeds BUT an increase in only a couple hundred MHz will not account for sole of the major drain examples on this thread. No way that lil bit increase can have such a dramatic impact on battery life. Something else is going on also. Culprit probably being our primes are now Insominacs..lmao. having a hard time staying asleep or having a good nights rest. So if prime is not in deep sleep then it will drain battery at alot faster rate than if it was in deep sleep. I think update may have tweaked some system settings to have them constantly going off all the time. Partial wake locks n kernel wake locks.
[Asus  Eee Pad Transformer Prime] jfarinella:
Post .13 problem boat

Unfortunately, I am in the same boat as the no problem pre .13 boat. The .13 update did some damage to my experience with my Prime. I started with the Sleep of Death problem. Did a factory reset and let everything install again. Sleep of Death went away. Now, when I let put my Prime down for the night, it completely drains by morning. I haven’t changed any setting from pre .13 when I could go 3 days before charging and no sleep issues.

I wall charged my transformer prime to 100% in the morning. Use it a bit during the day and show my battery at 70% in the evening. I set it down for the night next to the bed. With .11, my prime would wake up about 2% down. With .13 the tablet is warm to the touch, like it’s been running apps all day, not that nice icy cool that says it’s been sleeping peacefully. It's completely dead and until I charge it for a few minutes it won't even turn on.

I wish that this update would have come with a caveat "Don't install this unless you are experiencing problems".

Here is hoping that they allow us to revert back to .11, which shouldn’t be an issue to do. For now, I'll have to make sure and carry my charger on short trips.
[Asus  Eee Pad Transformer Prime] G37:
So I don't know how much a surprise this is, but different vendors can provide the same kind of functionality for the same kind of tablet. for example, the IPAD 2 screen is a combination of Sharp, Samsung, and LG. I'm wondering if certain vendors are having an adverse affect to the software. It's all speculation -- does anyone have any facts on this?
[Asus  Eee Pad Transformer Prime] oduca:
Thanks for the advance warnings, i wont update untill its stable
[Asus  Eee Pad Transformer Prime] demandarin:
Good point. Bit what components in prime would we be talking about that would be relevant to issues happening? We already know the CPU/gpu combo Soc Tegra3 comes from Nvidia alone. Then we have the broadcom wireless wifi/BT radio chip or whatever. We also have another one, I forgot its name but doesn't seem to be used.
[Asus  Eee Pad Transformer Prime] buxtahuda:
Humor me and join me in installing one app at a time after another reset (aside from updating current system apps + getting tools like WiFi Analyzer, BetterBatteryStats, CPU Spy, etc) and keeping all system settings at stock with the exception of GPS (keep my turned off for obvious reasons :p).

I kept Force GPU Rendering off and tweaked my sync settings. I'm getting better life than I was directly after update, about 11% drained for an 8 hour night.

I'm highly suspicious of their decision to run all four cores. I'm thinking that some poorly coded app or other is somehow causing an issue with this decision, maybe only because it pops up to using all four vs the companion even for app/widget updates. If you have something set to update often (or, as is likely, it comes default that way) it's going to keep you in a pretty awake state even without needing to be.

I'm just some Joe-schmoe, just blowing this out there, but I'm almost with Gary and them about an app (maybe apps in general with ICS combined to their kernel tweaks?) being partially to blame.

Requiring four cores at 475 MHZ to play a notification can not be efficient. That's about how my CPU Spy stats are looking, cuz I've only been touching my device to check that and BetterBatteryStats and I'm getting more time at 475 MHZ than I'm using... Or so it seems to me >.>
[Asus  Eee Pad Transformer Prime] JanetPanic:
gbcrush, it is not in super deep sleep if you have to hold down power for 10 seconds, it is locked. There are 2 things going on.

First are situations where the device is locking up while in sleep. In multiple occasions of this lock the user has commented on unusually high battery drain or high heat output, sometimes both. This suggests something is locking the cpu at full utilization and using the cycles. The cpu throttling up to 1.2 Ghz would not be sufficient to explain this. The CPU is being spun up and fully utilized on at least one core.

The second are situations where battery drain is higher than expected but not catastrophic (such as battery being completely drained while plugged in). This could be the cpu ramping up or the amount of time spent awake. Lock-N-Load is doing a nice job in analyzing his experiences to date.

For the runaway CPU and sleep lock problem it would be very useful if someone would connect to a box with usb debugging so that we could at least attempt to determine what is causing it. Installing dev tools might tell a bit more but I am not sure you could reach the info when the system is locked. It is a long shot but do those of you that are experiencing hard lock on sleep have an encrypted storage?
[Asus  Eee Pad Transformer Prime] fenturi:
Need to remember it's 475mhz + 475mhz +475mhz +475Mhz vs 102mhz

Never seems to drop to 1 or 2 cpu cores.
[Asus  Eee Pad Transformer Prime] rand4ll:
Just as an add on because I don't know if I have said it in this thread, anytime you update a reboot after the initial update boot is always a good idea. The initial boot after update does some activities that a normal boot doesn't like optimization of already installed apps. There is a chance this process could leave some processes running in the background or locking up some memory that isn't there on a normal boot. A quick reboot after the initial doesn't hurt anything and gives you a tablet in a state it should be in normally. If nothing else at least it will provide peace of mind that nothing odd is going on and give you a good clean start on testing the new updates.
[Asus  Eee Pad Transformer Prime] g10005:
+1 “Sleep of Death” issue

I am also experiencing the “Sleep of Death” issue. My prime has locked up 3 times since the last OTA. The tablet drains the battery very fast when it is locked up. It just locked up again within the last 3 hours. The battery drained from 70% to about 30% within the time it was locked up.

It has been very stable prior to the update. I found this forum thread when I decided to search online to see if anybody else had been experiencing my issue. I am hoping that someone at Asus is reading this thread.

I am also experiencing a significantly degraded stand by time. It seems my battery drain is 1 to 2% per hour when on Stand By. My standby time was fantastic before the update. Prior to the update, the battery would only drain by a few percentage points in a 24 hour time period if I had not used the tablet.
[Asus  Eee Pad Transformer Prime] techfreakster:
I have been following all of the post .13 update threads very closely since my Prime has had no issues until the most recent update. I'm not trying to add to the noise here, but I have experienced both high battery drain as well as the sleep of death since updating and I sent a message to Gary Key along with my serial number (BCOKAS series). I'm hoping that Asus can find the problem and resolve it since it's frustrating to never know if the screen will turn on whenever I pick up my Prime. I will continue to watch...and hope.
[Asus  Eee Pad Transformer Prime] rflagg:
Same issues here - no issues prior while running .11 firmware, or since getting the tablet in mid January - now with both tablet and dock, I'm getting ~24 hrs on standby before both are drained, tablet drains fast, constant reboots, and sleep of death with hard reset to bring tablet back up and running after it goes to sleep after just a minute. No new apps installed since update, etc. Will PM Gary my S/N and info as well.
[Asus  Eee Pad Transformer Prime] jdbaker82:
This whole Prime disaster is actually starting to turn comical.