yashsingh1/xdaforums huggingface dataset:
[Nexus 9 General] username4this:
Don't get me wrong but, posting SoT's like these means jack **** when all you do is nothing but leave the tablet with the screen on.

1% youtube?

2% chrome?

1% mx?

Really? And you're proud you did 7h SoT's?

I'm sorry and I hope I'm wrong but this tablet's battery will be a disapointment.

Whoever bought a N9 will be a guinea pig for future 64bit Android devices.
[Nexus 9 General] Scotlac:
Ummmm, I didn't really notice anybody mentioning that they were proud. Pretty sure we're just comparing experience at this point.......
[Nexus 9 General] nsx2brz:
This is definitely a bug! After seeing USBhost's graph I rebooted and it is no longer showing awake with the screen off this morning. I should be trending to much higher battery life today. Perhaps this is the cause of why some people have great battery life and others not so much.
[Nexus 9 General] mk92595:
All I used it was for studying on Study blue. Its still was being used
[Nexus 9 General] Hogyoku:
I hope they will change the orange battery warning its looks hideous...
[Nexus 9 General] StuMcBill:
I got about 5 hours SOT before I put it on charge with 7% left.

I hope it gets better!
[Nexus 9 General] Sean09:
I am on my second charge since using the unit - charged to 100%. I am using it for web browsing etc. While I am in the office I am leaving it on with Plants Vs Zombies 2 running. The unit is moderately hot.

I know it is not very scientific, but between that and using it for browsing and youtube when I can I hope it gives people somewhat of an idea as to what they can expect. I will obviously have better results when the weekend gets here and I can use it more regularly. When I finish the testing today I will post screenshot results of what drained the battery as well as SOT.
[Nexus 9 General] chrisnewton:
5 hours of on screen time would be a deal breaker for me, I get easily 8 on my Nexus 7...Damn I really wanted this tablet too.
[Nexus 9 General] brushrop03:
So I fell asleep last night while watching Walking Dead on my tablet. I woke up and the screen was still on. I had a total of 10.5 SOT and about 17-20% battery life left

edit: the screen was on b/c I left the video paused
[Nexus 9 General] Pilz:
I'm still on the Q build with elemental kernel so I'm happy for now unless the R has a big change then I don't see a point in upgrading it. Have you tried flashing a new kernel?
[Nexus 9 General] ram130:
Since the R update my N9 now averages at 90-94F while scrolling. And 98-104F when loading new sites. Or when apps and tabs are reloading due to memory issues. Also battery life improved.

After 20mins of browsing. Mainly scrolling. Lost a % every 15mins.

Sent from my Nexus 7
[Nexus 9 General] Scotlac:
Wow, very nice!!! I'm not having that experience on 21R, are you using the stock kernel?
[Nexus 9 General] Pilz:
I'm using the Q build with elemental kernel v 9.06
[Nexus 9 General] techiedj:
[MENTION=2404483]ram130[/MENTION] What app is that with the Battery Info screen?
[Nexus 9 General] littleemp:
Could you download a battery drain app such as this:

https://play.google.com/store/apps/details?id=com.WazaBe.android.BatteryDrain&hl=en

And post a picture with your Web browsing results? With the stock kernel the drain is between 19.9-29.9%/hr, so I'd like to see just how much elemental kernel improves things.
[Nexus 9 General] USBhost:
This is what I did

and it works vary well
[Nexus 9 General] Scotlac:
I think I'm going to just go ahead and take mine back to Best Buy and trade it in. I feel like it's a bit of a risk because my current N9 is near perfect hardware wise but this heat thing is really worrying me. I installed the ElementalX kernel and I'm still seeing 150-160 degrees just browsing and scrolling through websites......

If everybody was experiencing this I would feel comfortable waiting for a software fix but at this point it's fairly obvious that the temps I'm experiencing are not the norm.
[Nexus 9 General] Gormsen:
How is it working out for you? Do you feel any difference?
[Nexus 9 General] USBhost:
For one thing

My cpu never goes over 100f in chrome

Also doing benchmarking

The temp never really goes over 130f

usually it is 126f

Only when i play k1 games thats when it goes 140f but never over
[Nexus 9 General] Gormsen:
Sweet! How hard was it to do, what materials did you use? Could you maybe make a video or a step by step guide. This is something everyone could do, since we have that flex on the back ;)
[Nexus 9 General] brushrop03:
Another night where my Nexus just would not go to sleep. Stayed awake for the entire night. I don't have any crazy apps installed...i'm pretty basic: Social apps, Plex, Asphald, and that's about it. No apps are showing up in the Battery Stats. Just Screen & Android OS
[Nexus 9 General] littleemp:
Install BetterBatteryStats to find rogue wake locks if you have root.
[Nexus 9 General] chrisnewton:
Is anyone getting near 8 or 9 hours of browsing time? I really want the nexus 9,as I love my Nexus 7 but as I mainly use my tablet for browsing I don't want just 5 or 6 hours between charges when I get 8 plus on my Nexus 7.
[Nexus 9 General] brushrop03:
Yeah, I'm going to root this weekend and do that and flash a new kernal.
[Nexus 9 General] Migamix:
I have had similar issues a few times with my N7.2, and for the life of me can't figure out what kept it awake. other than the one time I had ingress running in the background and it's fast wake option on. its going to happen. suggest that before you go to sleep, swipe away all unused apps and hope rogues don't run. I usually reboot my devices when I've set it down for the night. fresh start in the morning.

3C toolbox pro has an option I have set as a gesture up option in nova to give full reboot options, seems to do it right as it sends a command to reboot, as apposed to everyone else's adb reboot where it can not let the system know it needs to halt.
[Nexus 9 General] brushrop03:
Yeah, I may just have Tasker reboot the device overnight. But still....this may be an issue when I'm just using it normally. I brought it with me to work today, and it's been in deep sleep all day.
[Nexus 9 General] Jeltel:
With R I'm now on 1 hour 48 SOT with still 86% left. Very good in my opinion, but barely any browsing.
[Nexus 9 General] TheDom82:
I'm on R and have been using Opera browser. Of all the browsers, Opera causes the least amount of warm-up, almost none actually. I'm currently see 5 hours SOT (mostly web browsing) and I have 25% battery left. This is better than anything that I've gotten with Chrome, Chrome Beta, Firefox, Firefox Beta, or Dolphin.

While streaming video, it's got GREAT battery life...its the web browsing that crushes it. I guess for now, I'll stick with Opera Browser until whatever software bug is fixed...even though I highly prefer Chrome.
[Nexus 9 General] USBhost:
Not beta chrome
[Nexus 9 General] brushrop03:
Nice.
[Nexus 9 General] Scotlac:
Quite impressive USBhost!!! Is this using your Fire and Ice kernel?
[Nexus 9 General] Scotlac:
Sweet, gotta flash that puppy!
[Nexus 9 General] jji7skyline:
Just joining this discussion, I saw some posts about the CPU governor being way to over-reactive, and then not slowing down quickly enough. Wouldn't it be possible to change the CPU governor? I know that I was able to do this on my rooted Kindle Fire, how hard would it be to implement on the N9?

I haven't got a N9 yet, still undecided between it and the iPad Air 2. No haters, it's a great tablet hardware-wise, I just find the software limiting at times.
[Nexus 9 General] USBhost:
Wait wait

Huh???????

Kindle Fire !?!?!? The original one!?!?!!! Thats Old!!!! And your only android device!!?!!

Get the nexus 9 and you will never look back

especially at apple products

Doing this will fix that crappy GOV

echo 2500 | su -c tee /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay

echo 1020000 | su -c tee /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
[Nexus 9 General] jji7skyline:
It is quite old, but I learned a lot about Android using it, but it was very basic to say the least. The USB charging port broke within 8 months, and I was overseas at the time so I fixed it myself (a bit of a DIYer), but eventually the USB would not transfer data anymore, and after updating the recovery system and trying to flash a new ROM, I bricked it. It now props my door open.

Thanks for those commands, I'll use them if I buy a N9. Would you mind explaining exactly what each of the commands do though?
[Nexus 9 General] USBhost:
You need to experience a nexus device

There the best. They may have bugs but one sure thing you know

The nexus community always fights to the top and never lets go!

Also AOSP is awesome!!!

those commands stop the cpu from jumping to 2.3Ghz just by taping/moving the screen

= better battery and less heat
[Nexus 9 General] jji7skyline:
Haha yea, the great developer community is one of the reasons I want to get the Nexus 9. If only I could get both! Oh well.
[Nexus 9 General] ram130:
Battery reborn.

I'm gonna do the same. But I'm worried about being limited on the iPad. Guess I got no choice. I need my money worth. Nexus 9 is not tablet to me anymore with 5hr screen on, launcher redraws and heat issues. I shouldn't have to root to fix what Google ignored in user experience. Otherwise I loved this thing. Now the choice is either iPad mini or Air 2. I'm leaning towards the mini.

Sent from my Nexus 9
[Nexus 9 General] borchgrevink:
So I have to root and run these commands from ADB?

No need to flah or do anything from recovery?

Does it impact performance in any way?
[Nexus 9 General] Tumult:
Not sure if this is reassuring, but just wanted to say that I've been experiencing very similar high temps (around 160). Tried a bunch of browsers and always much the same (though chrome is probably the worst).

But, I've had good results running Firefox with the adblock extension installed. Did a test browsing XDA forums for a few minutes on Chrome beta and temps were hovering around 160. Did exactly the same on Firefox with adblock and temps were hovering around 130. It feels a lot cooler and battery drain seems to be less (though I haven't really tested that).

It's not ideal - I'd like it to be cooler still - but I think it's an acceptable workaround for me until Google get around to pushing a fix...
[Nexus 9 General] brushrop03:
So how do I enter these commands? Never tweaked a kernel w/o an app before
[Nexus 9 General] USBhost:
Root is needed and busybox

https://play.google.com/store/apps/details?id=jackpal.androidterm

Just copy and paste

If you dont have busybox

Then do this

su

echo 2500 > /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay

echo 1020000 > /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq

There is a performance drop but you will hardly notice it
[Nexus 9 General] Diesel779:
I've had my N9 for a week and the battery life and heat issues are completely unacceptable for me. I wanted to love the Nexus 9, and, in some ways I do. Lollipop is smooth and runs well and the tablet is a good size, but battery life is terrible. I'm getting around 4 hours sot. For tablet that's piss poor. I never thought I'd go back to an iPad, but I'm just about to order an iPad Air 2. The battery life on iPad's cannot be matched and even though I prefer Android to iOS and I will continue using Android phones, I think Google have some serious issues to resolve with Android on tablets. This tablet would have been great with a Snapdragon 805. NVidia CPU's in mobile devices just cause too many issues.
[Nexus 9 General] USBhost:
What in the world are you using you N9 for

To only get 4 sot
[Nexus 9 General] Diesel779:
That's the thing. All I've used it for is very light web browsing, Gmail, Facebook and a little youtube. You sound surprised at 4 hours sot, why is that? From what I've read the majority of people are only getting 5 hours. The battery life on the Nexus 9 is terrible. Most forums I've looked on the majority of people are getting between 4-5 and a half hours sot. I' love to keep this tablet but I've had phones with better battery life. Sorry if I come across a bit harsh, I'm just really disappointed. I was looking forward to getting my N9 and it's just a let down.
[Nexus 9 General] USBhost:
I never get any lower than 5 SOT well only when i play k1 games

most of the time its 6-8

i can probably get to 9 if i had that much free time lol
[Nexus 9 General] Diesel779:
The sot seems very inconsistent from device to device on the N9.
[Nexus 9 General] USBhost:
Thats 3 days

of course you wont get good SOT
[Nexus 9 General] brushrop03:
Ahhhhh can't copy and paste!
[Nexus 9 General] Diesel779:
3 Day's is nothing, it's a tablet. When I had my Ipad Air last year I could use it for a while then leave on standby and repeat this process for over a week and still have 20% battery left. If I put my Nexus 9 on my bedside table at night on 80% battery I wake up and it's on 65-70% and that's with power saving mode enabled and location services switched off.
[Nexus 9 General] brushrop03:
It's a nexus. Software is going to get better. We've already had 3 major updates. Take it back and get a Ipad or Galaxy.
[Nexus 9 General] ryencoke:
Ya same problem in terminal emulator. Had to copy those commands into a text file using es file explore since it handles root operations (on root partition since SD partition can't be executable) and run the text file at term emulator do: ./cpu.txt (or whatever you called the file).

Got to be an easier way tho!
[Nexus 9 General] Diesel779:
I've just ordered an iPad Air 2. I sent as Galaxy tab s 8.4 back 2 weeks ago due to lag. I don't like Apple's phones, but when it comes to tablets they remain the benchmark. You've only got to read the comparison on Android Police to see that. I really like my N9 and this isn't my first Nexus device, I just feel really disappointed. Do the custom kernels and USBhost's commands improve battery life and overheating?
[Nexus 9 General] faux123:
Give my kennel a shot. I didn't do any crazy overclocking. The release included intelliplug and several battery saving tech
[Nexus 9 General] Diesel779:
Thanks, I'll check it out.
[Nexus 9 General] ram130:
I feel the same way. The fact apps are closing aggressively. Homescreen redraws. Chrome tabs reloads. Annoying. I can't stand this and I shouldn't have to root for a consistent tablet.

Sent from my Nexus 7
[Nexus 9 General] Diesel779:
I feel the same. I enjoying rooting and flashing kernels, customs ROM's etc, but I like doing that stuff for fun. I do NOT want to have to be doing that stuff just to make a talet I paid £320 work as it should out of the box.

---------- Post added at 09:46 PM ---------- Previous post was at 09:39 PM ----------

Today my battery was at 70%, I did 3 races on Asphalt 8 on pretty low brightness, I did a little web browsing (About 10 minutes) and rebooted the N9 once. Just from that usage my battery dropped from 70% to 26%. I'd expect that on a phone, but it's completely unacceptable on a tablet. Anyway my minds made up the N9 is going back and my iPad Air will be here on Monday. I'll check to see how the N9 is shaping up in a few months and if things have gotten better I'll purchase another one. As things stand I'm not prepared to spend £320 to be a beta tester.
[Nexus 9 General] macrossmerrell:
In getting 6 to 7 hours playing Linezeta (which uses more energy than the screen...). I've currently just put in 4 hours SOT in the game and I'm at 50% battery (along with some so updates, some Google searching, and email. On my Nexus 7 2012, I would only get about 2.6 hours of screen on time playing this game.

I'm a happy camper!

Merrell
[Nexus 9 General] USBhost:
Will do

---------- Post added at 02:34 PM ---------- Previous post was at 02:33 PM ----------

Same here haha lol
[Nexus 9 General] TheDom82:
I agree. I thought Opera browser was fix to bad battery while browsing...it wasn't. It started to be just as bad as chrome, although not heating up. I have slight light bleed. And the last straw today was the speakers started to make a clicking/popping sound when I touched one area of near the bottom speaker. It would pop/crackle/click 5 times when I grabbed the tablet by the lower right corner. I've already boxed it up and shipped it back to Amazon this morning. I picked up an iPad Air 2...and damn it, everything is perfect. Been web browsing for an hour...still 99% battery left. I wanted to like the Nexus 9 so much...used it for two weeks, but there are just too many faults to put up with.
[Nexus 9 General] brushrop03:
You don't have to root. I have none of those problems using the R update I received OTA.

Google had a bad rollout but mine is running fine, so wait for update or return. Pretty well documented that the update fixes everything you mentioned. Geez.
[Nexus 9 General] brushrop03:
With the R update. Stock kernel up until that drop off. Just flashed Elemental
[Nexus 9 General] di11igaf:
Then the iPads battery % is lying to you. Simple as that.
[Nexus 9 General] ram130:
Yes mine creaks in certain spots. How is the iPad? Does the Air size feel too big? I'm considering the mini.

You missed my point. I'm already on R. I side loaded it. Same deal. If you don't notice tabs reloading in chrome, the home screen doing a occasional reload. Then you must not be doing anything moderate or have over 10apps. Frankly to be fair, if you reboot daily, it hardly happens.

Example of what I experience daily:

Again. I love this tablet. It's just these odd issues. I was ready to work with the hardware issues if battery life was better. But I can't. Moderate usage, 4-5hr screen and unplugged at 1pm got me this by 9pm:

My usual avg occasionally:

This is not tablet battery life. No. This is a Nexus 5 type battery life. For others to pass it on as "fine" is just bewildering. Especially since my N7 gets 3hrs more screen on with 24hrs stand by. Not asking for much, just hate feeling burnt. But again, I remain positive for future updates. ..but I am already looking for an iPad now.

No. The iPad battery is that good. Only thing is it takes a while to drop off from the initial 100%. iPad is something you can leave on for a week with light usage.

Indeed. I filed a replacement with Amazon. Should have done a refund instead. Oh well. Let's see how this new one pans out Monday.
[Nexus 9 General] mk92595:
It will get better with updates.
[Nexus 9 General] Diesel779:
I think we both made the right decision. I love Android and I love Nexus devices, but I'm going to use my iPad Air 2 until HTC/Google get all the problems sorted out on the N9. If a month or so down the lie I start reading good things about the N9 I'll switch back. As things stand there's just too many issues on the N9 to make it an option for me. I put up with the light bleed and other issues, but battery life is important to me and the battery life I experienced on the N9 was terrible.

---------- Post added at 11:05 AM ---------- Previous post was at 11:03 AM ----------

I had the R update on Friday. It solved nothing for me.
[Nexus 9 General] ram130:
Man I'd usually say I hope so. But Google has always proved me wrong. Fingers crossed. Gonna try out the iPad mini this week. Amazon said my replacement won't be here until next week.
[Nexus 9 General] TheDom82:
I wasn't speaking of creaking...if it creaked, then that would have been ok, I'm used to creaks from tablets because all of my Samsung tablets creaked. This was the speakers actually playing a sound when I grabbed the N9 by the lower right corner. The speakers would generate a click, click, click, click, click sound. This started happening with 100% repeatability and reliability. Rebooting didn't help and I was already on R.

As for the iPad Air 2 size, it doesn't feel too big at all (of course IMO). It's hard to explain but while its heavier, it feels much less dense and is actually easier for me to one hand. I finally understand what people mean when they say premium hardware. The look and feel are flawless. It's visually stunning (I got the gold one) and so far I haven't noticed a single hardware issue.

The downside? iOS is annoying...hugely so. i haven't figured out if the iPad has a swipeable keyboard, the scaling on non-iPad optimized apps is horrendous, and while they've stolen some notification ideas from android, the implementation of notifications is awful!

But, it looks and feels it's cost, runs smoothly, and is showing exceptional battery life on this first charge (about 4 hours browsing and 2 hours streaming videos - 67% battery life left)...no regrets so far. Oh, and I was able to get a case for it without having to put out a search party.:p
[Nexus 9 General] DanielW81:
How bad I tab reloading on the iPad in Safari compared to the N9 in Chrome?

The last time I used an iPad it was horrible, but that was a few years ago.

I know all those devices are memory limited compared to my PC, but I don't understand, why no one implemented something like "suspend to disk" for tabs, where it dumps the memory content for a tab to the flash memory and reloads it from there. If you do it compressed with hardware compression support, I expect it to be really fast.
[Nexus 9 General] brushrop03:
Soooo can we get back to the Nexus 9 and battery life.

Today is going to be my first full day on Elemental kernel. Yesterday I finished with just over 6 hrs SOT on mostly stock kernel with around 20% battery left.
[Nexus 9 General] TheDom82:
I use chrome on the iPad. I didn't experience tab reloading on the N9 and haven't yet on the iPad. What I did experience on the N9 was extremely poor battery life while using Chrome, Chrome Beta, Firefox, Firefox Beta, and to a lesser extent Opera browser. While doing everything else on the N9, i.e. not web browsing (I don't know about gaming), battery life is perfectly acceptable.
[Nexus 9 General] Chyeo1979:
Freshly unplugged from the socket this morning, surfed chrome for about 20 mins and facebook for 5 mins, battery dropped to 91%. Really not impressive even though i jumped over from an old ipad 2. But won't be going back to ipad no matter what.
[Nexus 9 General] Scotlac:
After a couple of weeks of struggling with the heat/battery life issue I finally took my N9 back to Best Buy and exchanged it. I wanted to post back here to let those of you that are having extreme heat issues know that it could be somewhat related to hardware.

The N9 that I took back was near perfect hardware wise (at least externally) but got VERY hot while browsing and playing games. I'm talking like 140-180 degrees with just simple scrolling in Chrome. The battery would drop like a rock under these circumstances losing ~3% every 10 minutes.

The new N9 that I received yesterday has a little light bleed and the sunken power button issue but is much better in the temperature department. Right out of the box it was a solid 20-30 degrees cooler while doing the same activities and now that I've got a custom kernel installed it seems to be doing even better.
[Nexus 9 General] USBhost:
Cheers!!
[Nexus 9 General] ram130:
Oh makes sense. That was a hardware issue as I don't have the same problem. Thanks for your experience! I'm considering the Mini 2 then and if I like iOS enough I'll drop the $600 later down. I agree it's not that much bigger. I played with one today. Thanks.

Lol. Terrible still. But good to know the kernel improved it.
[Nexus 9 General] brushrop03:
Little over 6hrs SOT is terrible with just over 20% on stock kernel? Heavy asphalt games play and video usage

I could have gone 8+ hours if I decided to

Not sure what you are expecting from an ipad but have fun with that
[Nexus 9 General] Wayfarerrr:
Has anyone tried the batterylife with constant movie watching?

I´m looking for this fellow for it´s 4:3 screen, but also for media usage in long flights. And I can live with the letterboxing.

Currently my Nexus 7 can do about 9-10 hrs with movies and I hope the same for the next tablet...
[Nexus 9 General] TheDom82:
battery life is fine while watching movies on the N9. I think if all you're doing is watching movies and reading books, then you'll get the advertised battery life easy.