Database Users

Atrix tends to run hot quickly

I'm running CM 7.2.0 with faux's 1GHz 0.2.4 kernel underclocked to 912 MHz (though I've had this with all CM roms and kernels) and after more than a minute of screen time my Atrix's CPU tends to exceed 50 degrees Celsius while the battery gets to around 40 degrees Celsius (this is recorded using setCPU). This happens most with apps like BaconReader or Facebook but has happened with others too.
I refuse to play games on my phone because it seems to nearly overheat while I'm playing any game.
When the phone starts to get hot, the battery drains faster (like 1% every 2-3 minutes).
Is there something I can do to fix this, or is this a common problem that I shouldn't mind?
Has anyone else experienced similar temperature issues?

Indeed my friend, its the Tegra 2 chipset, in fact, most of nVidia hardware tend to overheat, including Tegra 3 and PC/Laptops Video Hardware.

djluis48 said:
Indeed my friend, its the Tegra 2 chipset, in fact, most of nVidia hardware tend to overheat, including Tegra 3 and PC/Laptops Video Hardware.
Click to expand...
Click to collapse
Never had an overheating problem without a rogue app on my Atrix. Get BetterBatteryStats and CpuSpy and see what's keeping your phone awake/running.

Crap phone, nothing you can do about it.

Atrix_Owner said:
Crap phone, nothing you can do about it.
Click to expand...
Click to collapse
Someone is very dissapointed with its phone. :cyclops:

Atrix_Owner said:
Crap phone, nothing you can do about it.
Click to expand...
Click to collapse
Get a life.
Nothing wrong with our phones except moto's traditional neglect.
OP, try going back to stock. I find I've got heat issues with custom kernels too..
Sent from my MB860 using Tapatalk 2

Probably you have some rogue apps running in the background. You could try the GSAM battery monitor. It shows which app using the most battery and waking your phone.

It is getting hot because it is under a load. Not the phones fault. It is something you added. I had a "bad" app that looped and kept trying to write to cache. I couldn't figure it out till I used logcat. This phone still kicks ass, even if it does have Tegra II.
Also, BetterBatteryStats is free to xda users.
http://forum.xda-developers.com/showthread.php?t=1179809

I would look into an kernal change if nothing else works. This has helped in the past for me

MXIIA said:
I'm running CM 7.2.0 with faux's 1GHz 0.2.4 kernel underclocked to 912 MHz (though I've had this with all CM roms and kernels) and after more than a minute of screen time my Atrix's CPU tends to exceed 50 degrees Celsius while the battery gets to around 40 degrees Celsius (this is recorded using setCPU). This happens most with apps like BaconReader or Facebook but has happened with others too.
I refuse to play games on my phone because it seems to nearly overheat while I'm playing any game.
When the phone starts to get hot, the battery drains faster (like 1% every 2-3 minutes).
Is there something I can do to fix this, or is this a common problem that I shouldn't mind?
Has anyone else experienced similar temperature issues?
Click to expand...
Click to collapse
i know exactly what you're talking about, i jumped around all them roms based off of CM7 and CM9, tried different kernels, I did like Clemsyn's 1.0GHz enhanced kernel. In the end, try the rom in my sig, its based off CM7.2 stable, i **** you not my friend, first time ever I have enjoyed more than 24 hours of phone use on a single battery charge, phone never gets anywhere remotely close to being as hot as it used to, something about this build, i dont know but my battery lasts now and phone doesn't cook in my pocket after a phone call, check out log i have of how much battery life I got from 1 full charge
try flashing Jug's battery fix through CWM, it slows down the drain of the battery to a noticeable level where you can see it really does work and helps keep the battery from being pissed away after 2 phone calls

This is happening to me as well and only with this Rom have I had this issue. I guess I'll try changing roms and see if that fixes things.

i am using epsilon project v5 and problem solved
remember to fix permission
Sent from my MB860 using xda premium

Best Kernel for battery

Which ROM performs the best in terms of battery performance. If you are using any Governor and I/O setting please do mention them.

PA rom...Franco kernel...ondemand settings...

I'm also curious on what you guys experienced.
I'm currently testing Franco R15 with Stock JB on my Nexus 4. It's the first day and I'm running for 9 hours with 1h 46M of screen time.
So I'm expecting about 3h 30m of screen time.
Will give it a fews days and report back. Then I'll try out Matr1x.

Please use search next time because there are threads with the same exact title. No such thing as a best kernel. It is subjective such as if you were to ask the question, what is the best car for conserving gas usage.
Sent from my Nexus 4 using xda premium

My first cycle (settings on signature) gave me almost 4hs of screen time.
Trying second cycle today.

calanizzle said:
My first cycle (settings on signature) gave me almost 4hs of screen time.
Trying second cycle today.
Click to expand...
Click to collapse
your sig is wrong, unless you are running 4.1.2?

calanizzle said:
My first cycle (settings on signature) gave me almost 4hs of screen time.
Trying second cycle today.
Click to expand...
Click to collapse
4.1.2????
Sent from my Nexus 4 using Tapatalk 2

This is what I'm getting constantly and I'm running Stock everything/rooted... not sure if I would leave stock with these numbers I'm getting... Anyone getting better numbers with custom ROM/kernel
Sent from my Nexus 4 using xda premium

fresh_TD said:
This is what I'm getting constantly and I'm running Stock everything/rooted... not sure if I would leave stock with these numbers I'm getting... Anyone getting better numbers with custom ROM/kernel
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
That's really good. I'm getting 4 hours 45 min running Xylon 012 with Matr1x 3.0
Sent from my Nexus 4 using Tapatalk 2

Jefferyrbrown1983 said:
That's really good. I'm getting 4 hours 45 min running Xylon 012 with Matr1x 3.0
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I'm going to give francos kernel a run to see if I can squeeze a little more out the battery
Sent from my Nexus 4 using xda premium

I'm on Stock rooted using Franco's R15 kernel since a couple of days. Every charge cycle brings a slight improvement. Will test the kernel for a week and then flash Matrix's kernel and compare.

Thanks for letting us know.
Sent from a galaxy far far away.

Wish I had better battery life
Sent from my Nexus 4 using xda premium

for best battery : CM10.1 + faux kernel (the last beta) + intellidemand + UV -150mv .
+5h00 screen on

fresh_TD said:
This is what I'm getting constantly and I'm running Stock everything/rooted... not sure if I would leave stock with these numbers I'm getting... Anyone getting better numbers with custom ROM/kernel
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
So ~5 hours screen time. And you got 1.4 days on WiFi with hardly any awake time. That's not really a good measure of battery life.
I don't know about everyone else, but I find the Nexus 4 gets really good battery life. Maybe not as good as the GSIII or the H1X+, but those have tremendously aggressive power-saving features.
Using faux kernel with Snake Charmer (caps max freq on all 4 cores) and Eco Mode (only allows 2 cores to be simultaneously active) provides adequate performance with very good battery life; even better if you undervolt. You will definitely beat the GS3 or H1X+ with those faux kernel settings. I don't use Eco Mode, because my phone lasts nearly a day, and I can charge it mid-day. I should probably be more conservative so I won't have to replace the battery as soon, buttphuckit, I do what I want.

I've used faux, Franco, motley, and Matr1x a lot. As of now, the best battery with performance goes to Matr1x by Mathkid. Version 2.5 undervolts by 150, which my phone runs fine. However, a few people had instability because it was too low for their devices. Enter v3.0, which undervolts by 100 (and you can uv even more using System Tuner or perhaps Faux app). Either way, great battery life (I routinely get 5 hours screen time with 16 hours battery time, or 4 hours screen with 24 hours total, etc).
Absolute best battery life is probably faux with his battery optimized settings (1.35 max speed, snake charmer, eco mode, and some undervolt by 100 or so). It runs fairly well, but it's not as quick and smooth as stock because it sacrifices some of that for battery (fair trade off if you need it because it's still a damn fast phone). People have gotten 6 and even 7 hours screen time. Obviously this won't happen playing games but it's possible with light browsing and texting and whatnot.
Motley's kernel also gets good battery and excellent performance. Franco's kernel does too, but not quite as good of battery because it doesn't support undervolting YET. When it does, it might be the best battery for performance of all (likely).
I use Matr1x daily and am happy with it. Some people, even smart devs, will sometimes tell you undervolt battery gain is negligible. However, at least with this device, it can make a huge difference because it handles such a big undervolt while remaining stable. It also stays much cooler and will run at high clocks longer before reaching the thermal throttling limit.
Anyway, some people might disagree, but these are my experiences. Franco has a huge following and for good reasons. His kernels are awesome. I just don't think the battery life will compete until he adds undervolting. He has said this will come when he feels it is stable and good overall. I'll probably switch then unless Mathkid adds more features to his like gamma control, etc.
Hope this is helpful. Btw, another thing I really like about Matr1x kernel is that he uses the older touchscreen driver which increases screen sensitivity. Many people complain about the nexus 4 screen sensitivity, and if that applies to you, this will fix that.
Sent from my Nexus 4 using Tapatalk 2

^^ A good write up, deserved its thanks. Am on latest rasbean & matr1x, never experienced smoothness & battery life like this. Screenshots at the Matr1x thread later today.
However, all users are different. Battery life WILL differ, that's the only certain thing.

Smoothrom causing hot battery

I am not a ten posts so can't post in dev section. I have had the nexus since September and played lots with different kernels and roms and am playing surfing for 10 plus hours a day over holidays so know how this thing likes to run. I installed smoothrom today and noticed the back getting hot and the battery reporting 31-32C. It normally runs 28-29C and the back does not get hot unless I am gaming. Its winter here and house is never over 22C so its not that. No GPU over clock and tried 3 different kernels just to be sure. Is there anything that could be loading the GPU in smoothrom? I have run stress tests at 1.5G and not got the battery that high. And the battery is not draining faster than normal.
Sent from my Nexus 7 using Tapatalk 2

k29er said:
I am not a ten posts so can't post in dev section. I have had the nexus since September and played lots with different kernels and roms and am playing surfing for 10 plus hours a day over holidays so know how this thing likes to run. I installed smoothrom today and noticed the back getting hot and the battery reporting 31-32C. It normally runs 28-29C and the back does not get hot unless I am gaming. Its winter here and house is never over 22C so its not that. No GPU over clock and tried 3 different kernels just to be sure. Is there anything that could be loading the GPU in smoothrom? I have run stress tests at 1.5G and not got the battery that high. And the battery is not draining faster than normal.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
I'm running SmoothROM too. Of course it's getting hot when you play games, it always will. My temps are the same when I'm playing, you don't have to worry about it, these temps are safe.

you do realize that 31-32C isnt hot, right? you do know that your body temperature is right around 37C, right? holding your device in your hand while its powered off can get your device warmer than that.

Well, of course I don't mean hot, but warm. It gets warmer only when I play games, that's no problem.
Sent from my Nexus 7 using xda premium

[Q] How can I get my Nexus 4 longer battery life?

Hi Guys I am noobs here, still I hope you could help.
I have had my N4 for about 3 months now and I have had the same problem since day 1... If you play games that battery life is less than 2 hours. How is this possible?
Is it due to me having process like Skype in the background?
I see that my screen is taking about 70% of the battery life which to me is insane?!
Site note is I got the 8GB version and finally found out that the andriod system is taking up about half my memory.
Waiting to hear from you guys.
Cheers Patrik

Skype is a known battery hog unfortunately but not your main cause.
You need a custom kernel that will let you do things like...
down clock cpu and gpu
undervolt cpu
set max cores, so you can just run for example 2 cores
..it's surprising how much you can turn things down and still have plenty of power for most games
oh yeah keep screen brightness down and try not to run 3g

The higher percentage the screen uses of your battery the better . 70% is normal.
Sent from my Nexus 4 using xda premium

UV.
Sent from my Nexus 4 using xda premium

What am I doing wrong? Short battery life and heating issues!

Hey guys, I have a serious problem with my battery life.
I am currently on PA 3.5 and PA stock kernel but this has been an issue for a long time.
If I barely use my n4, the battery will last over 24 hours, but calling or gaming will kill my battery really quick.
Playing let's say candy crush saga will kill my battery in less than one hour and my Nexus will reach really high temperatures. I also have the visible glue on some parts of my display. Some of you may know what I'm talking about.
So what would you recommend me to do? I'm actually quite happy with my n4, but I want to be able to play a stupid game for 20 mins without worrying about my battery...
I've wiped my battery stats after Rom updates when I felt like and I'm also using greenify which is hibernating background apps to save battery.
I guess I will have to use an other kernel, right?
Sent from my Nexus 4 using xda app-developers app

George_Mn said:
Hey guys, I have a serious problem with my battery life.
I am currently on PA 3.5 and PA stock kernel but this has been an issue for a long time.
If I barely use my n4, the battery will last over 24 hours, but calling or gaming will kill my battery really quick.
Playing let's say candy crush saga will kill my battery in less than one hour and my Nexus will reach really high temperatures. I also have the visible glue on some parts of my display. Some of you may know what I'm talking about.
So what would you recommend me to do? I'm actually quite happy with my n4, but I want to be able to play a stupid game for 20 mins without worrying about my battery...
I've wiped my battery stats after Rom updates when I felt like and I'm also using greenify which is hibernating background apps to save battery.
I guess I will have to use an other kernel, right?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I`am using Franco kernel r134 atm, you might try it. Getting good batterylife and performance and color control, and undervolting may limit the temperature. I have a faster binned cpu and i undervolted -100mV (conservatily).
You might also look at other good custom kernels here on the thread, there are plenty.

I was using Franco kernel before, but I kept the stock PA kernel as the color configuration was better as with Francos app display control. Now I flashed r134 and reinstalled display control to see that gamma settings were added I guess I'll stick to that kernel now and see how my battery likes it.
Which app are you using for undervolting your n4? I installed cpu tuner, but there is no way to undervolt.
Sent from my Nexus 4 using xda app-developers app

I'm using Franco kernel #666 and it's giving me good battery life and very good performance. I've undervolted -125 mV and the heating issue is gone now. The colors look awesome too.