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Freeze + "rrrrrrrrrrrrrrrrr" sound

My nexus 10 froze two times today ( pretty normal, it usually freezes about 5 times a day) but today, a strange sound came out of it ( "rrrrrrrrrrrrrrrrrr" )
I don't know if it were the speakers or if it came from somewhere inside the tablet... I am very disappointed, I sold my transformer tf101 because it froze 3 times in a week, that was already to much for me. Why can't Google just fix it ? Or are they working on a fix ?
Inse
Sent from my Nexus 10 using XDA Premium HD app

Are you on a custom kernel? That sounds similar to the CPU crashing and hanging, thus the repeated noise

try setting your cpu governor to performance if you have a custom rom or kernel. solved the issues with rebooting for me (for the most part)

Well, you have to determine why the tablet is rebooting. If the device is getting noticeably hot and there is a "slideshow" effect then it is a indicator that it is being thermally throttled. Changing the governor won't necessarily fix this and in some cases can exacerbate it.
If you are indeed on a custom kernel, then then the kernel crashed. If its a reoccurring event then I would look at flashing a different kernel (Ktoonz or another) and seeing if that fixes the issue.

I haven't installed a custom kernel or custom rom, I not even rooted. On the left side of the camera ( when holding in landscape) the tablet gets very hot while playing simple games like pudding monsters. Is that normal ? Happens it to anyone else ?
Send from my lovely Sensation XL,
If I succeed helping you (rare) don't forget to hit the thanks button

There is currently a theory (tested by members and mostly supported by gathered data found in this thread) that the CPU does not have a temperature sensor and instead estimates temperature based on an equation. According to the member who did some testing, the equation is way off from the actual temperatures. This can cause freezing (due to lag from thermal throttling) which would account for the sound or the random reboots as the temperature equation reaches a critical point and reboots the device.
I would pay attention to the KT Manta kernel thread as there's some interesting research going on over there. I can say having used that kernel from day one, 100 MHz to 1.7 GHz and extremely undervolted I haven't experience a single instance of throttling or rebooting. The only reboots I've had were when I was dialing in my undervolts. I tried messing with the GPU voltage, but mine appears to be somewhat picky and I really couldn't undervolt the GPU much. The CPU on the other hand undervolts like a champ.
However, if the theory that Samsung uses an equation to determine temperature and not an actual sensor, undervolting will have zero effect on "temperature" though it will save battery. Having never encountered thermal throttling (even after significant game play and other activities) I can't speak to that issue. Though I can say that with my undervolt settings, the battery lasts a crazy long time and I have absolutely no performance issues.

[Q] Heating problem

it's getting hot within a 10-15 min. last day i have just take 2-3 picture of my friend from N4 and it feel hot in hand and same happened at home also is it normal with N4.

GS150R said:
it's getting hot within a 10-15 min. last day i have just take 2-3 picture of my friend from N4 and it feel hot in hand and same happened at home also is it normal with N4.
Click to expand...
Click to collapse
You may use an app such as System Tuner to watch your CPU temperature. Mine get 50 celcius after 15minutes playing NFS MW... I dont know if it is still normal.

What version are you on? Mine used to be uncomfortably warm, but since 4.2.2, that has been fixed for me.
Sent from my Nexus 4

GS150R said:
it's getting hot within a 10-15 min. last day i have just take 2-3 picture of my friend from N4 and it feel hot in hand and same happened at home also is it normal with N4.
Click to expand...
Click to collapse
Hi,
It feels hot... its very subjective without a real measured CPU or battery temp. Like opticaldh said, install an app with monitoring CPU temp and see. What kernel ?
Also what is the battery temp?
opticaldh said:
You may use an app such as System Tuner to watch your CPU temperature. Mine get 50 celcius after 15minutes playing NFS MW... I dont know if it is still normal.
Click to expand...
Click to collapse
Hi,
Normal with these kind of games... But without more informations, overclock, underclock, undervolt, what kernel?
In any case with such of but playing heavy game I don't see where is the problem.
You can also search in the Nexus 4 General and Nexus 4 Q&A, Help & Troubleshooting sections there is another threads...

nhatters said:
What version are you on? Mine used to be uncomfortably warm, but since 4.2.2, that has been fixed for me.
Sent from my Nexus 4
Click to expand...
Click to collapse
at first use it feel hot(over a wifi) at the top of the back panel then (with 4.2.2)i tried to connect it to my pc running win-xp but fail in between it behaves abnormal after some 2-3 restart it work pretty normal(now i am using Bluetooth to share data to pc) but still some lag in touch and heating problem.

viking37 said:
Hi,
It feels hot... its very subjective without a real measured CPU or battery temp. Like opticaldh said, install an app with monitoring CPU temp and see. What kernel ?
Also what is the battery temp?
Hi,
Normal with these kind of games... But without more informations, overclock, underclock, undervolt, what kernel?
In any case with such of but playing heavy game I don't see where is the problem.
You can also search in the Nexus 4 General and Nexus 4 Q&A, Help & Troubleshooting sections there is another threads...
Click to expand...
Click to collapse
at first use it feel hot(over a wifi) at the top of the back panel then (with 4.2.2)i tried to connect it to my pc running win-xp but fail in between it behaves abnormal after some 2-3 restart it work pretty normal(now i am using Bluetooth to share data to pc) but still some lag in touch and heating problem.

viking37 said:
Hi,
Normal with these kind of games... But without more informations, overclock, underclock, undervolt, what kernel?
In any case with such of but playing heavy game I don't see where is the problem.
You can also search in the Nexus 4 General and Nexus 4 Q&A, Help & Troubleshooting sections there is another threads...
Click to expand...
Click to collapse
I am on Franco kernel, fast CPU, UV 150 (Default for 384Hz is 850, now it is 700). That's what makes me worry.

My Nexus has been getting uncomfortably hot. I first noticed it last night after getting to a friends place and took the phone out. It was really hot and the battery had dropped about 20% for a 15 minute drive. I checked the battery and Google Maps was showing at the top with the most usage even though it wasn't enabled.
I then proceeded to check the settings in Maps and turned off all the location tracking stuff which was unfortunately enabled.
However, even today my phone was again quite warm after driving around. Battery didn't even show Google Maps so that wasn't the cause.
It may have something to do with signal issues always trying to get the strongest signal as it doesn't happen when I am at home and not moving around.

Maybe your friend is hot
sent from my nexus 4; cat on lap, beer in hand

Please help me.how to overcome or reduce heating problem of nexus 4.

is this your first smartphone? they all get "hot"

Only way to really reduce heat without an impact on performance would be to undervolt. Another way would be to underclock. Both you need a custom kernel to do.

IINexusII said:
is this your first smartphone? they all get "hot"
Click to expand...
Click to collapse
Yes! it is.

Detailed said:
Only way to really reduce heat without an impact on performance would be to undervolt. Another way would be to underclock. Both you need a custom kernel to do.
Click to expand...
Click to collapse
Which kernel do you preferred.

GS150R said:
Yes! it is.
Click to expand...
Click to collapse
well its normal then
@Detailed, @opticaldh, shutup and stop telling people to undervolt, youll just get them into more trouble.

Matrix kernel runs at 288 MHz when idling, you can under volt it at around 650ma there.
I am running Motley kernel, idling at 308 MHz, UV at 700 ma. The only time I notice my n4 getting hot is when I use GPS and charging simultaneously.
Sent from my Nexus 4 using xda premium

i don't have a problem with heating on my Nexus 4, running latest franco kernel + uv settings makes it a lot cooler than before, when i don't use uv settings it heats up too pretty fast but with those settings it even stays cool on benchmarks and stability tests, cause i don't play on my Nexus 4, could try that out too to see if it gets hot. well it gets slightly warm but never "hot" i would never call it that.

IINexusII said:
well its normal then
@Detailed, @opticaldh, shutup and stop telling people to undervolt, youll just get them into more trouble.
Click to expand...
Click to collapse
OK.thanks for your help.

jamesc760 said:
Matrix kernel runs at 288 MHz when idling, you can under volt it at around 650ma there.
I am running Motley kernel, idling at 308 MHz, UV at 700 ma. The only time I notice my n4 getting hot is when I use GPS and charging simultaneously.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
OK . I am try this.

Ƶero said:
i don't have a problem with heating on my Nexus 4, running latest franco kernel + uv settings makes it a lot cooler than before, when i don't use uv settings it heats up too pretty fast but with those settings it even stays cool on benchmarks and stability tests, cause i don't play on my Nexus 4, could try that out too to see if it gets hot. well it gets slightly warm but never "hot" i would never call it that.
Click to expand...
Click to collapse
OK. I am try this.

[Q] Phone getting warm lately, Please Help?

Not sure why but ever since I flashed release 7 of the faux kernel my phone just seemed to get really warm, now I don't know if i just never noticed it but I'm running Motley kernel now and my phone just gets warm at the top when installing apps. I'm not sure if I never noticed it and I'm starting too or if I have a problem, HELP? Thanks.

That's completely normal. When installing asps the CPU is being used. Also, the CPU governor being used and uv'ing affect the temperature. Also, the CPU is located at the top I'm guessing.
Sent from my Nexus 4 using Tapatalk 2

Hey, I'm wondering too ! Since i flashed the latest faux kernel (release 007m) , my phone seems to be warmer than usual. According to the system tuner widget the phone runs around 45°C after a few minutes of use and sometimes reaches almost 60°C while i do nothing special on my phone (a little browsing, sms). Despite the fact that I've downclocked the cpu to 1.35ghz, put the governor on intellidemand, disable mpdecision, UV 75 mV and running at the stock gpu clock. I don't know if this is normal but this seems to be a lot. What's gonna happen if I play games or some more intensive apps?

Only 4 cores are used

Hello,
I have a peculiar problem with my OnePlus Two
The faster A57 cores don't get activated, I have tried using Antutu, played Asphalt 8 And NFS NL for hours.
But the cores just won't get triggered
I'm using A1 CPU tool to monitor the same.
Even CPU Z wouldn't show me any activity on the other 4 cores while Antutu was running.
Any ideas? It's brand new can be returned
Oxygen OS - 2.1.1
A2003_14_151011
Sent from my C6602 using XDA Free mobile app

Denhot said:
Hello,
I have a peculiar problem with my OnePlus Two
The faster A57 cores don't get activated, I have tried using Antutu, played Asphalt 8 And NFS NL for hours.
But the cores just won't get triggered
I'm using A1 CPU tool to monitor the same.
Even CPU Z wouldn't show me any activity on the other 4 cores while Antutu was running.
Any ideas? It's brand new can be returned
Oxygen OS - 2.1.1
A2003_14_151011
Sent from my C6602 using XDA Free mobile app
Click to expand...
Click to collapse
I just installed A1 CPU to verify your issue.
It shows cores 0,1,2,3,4 are used at 1344ghz for me as well.
When i check with synapse (i'm on AK kernel) it shows all cores are used.
I guess it's a limitation with A1 CPU tool. Try with other tool that supports such architecure.

I was sceptical on the same but, out of the box I remembered seeing 1777 MHz frequencies.
Thanks a lot
I shall try more tools and get back.
Though I think if you're on a different kernel and had the A1 CPU tool been correct it would be redundant, Because core allocation would be done on kernel level (in my knowledge).
Sent from my iPad using Tapatalk

I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?

jemcik said:
I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?
Click to expand...
Click to collapse
Hi Jemcik, hi Denhot!
I'm facing the same issues on my new device and it's definately not normal!
With a battery level of 19% I was not able to get the 4 A57 cores online, which results in lower system performance. Have you found a solution?
@Denhot!
Maybe we should rename the thread into: IS OPT PERFORMANCE REALLY DEPENDENT ON BATTERY STATUS AND IS IT A ROM FEATURE OR AN ISSUE!?
I think, one of the kernel devs should be able to answer this question.

ollimi1 said:
With a battery level of 19% I was not able to get the 4 A57 cores online...
Click to expand...
Click to collapse
It looks like some system configuration files with kernels activation policy have to be edited,
but I haven't found yet which files exactly.

jemcik said:
It looks like some system configuration files with kernels activation policy have to be edited,
but I haven't found yet which files exactly.
Click to expand...
Click to collapse
I've never experienced such a function!
CPU power depending on battery voltage!? 62k with full battery, 49k with 20% battery both with same CPU temps!
Hopefully not a general problem on our side with the motherboard Voltage Regulator or something.
Have you been to a kernel thread and asked this question? If not, I will ask this in AK's kernel thread. Maybe he knows more about it!

The 4 high performance cores will only be activated when needed. What app are you using to check the core usage? Every now and then you should see 2 of the high performance cores sometimes coming to life every now and then, with the other 4 power efficent cores being more busy. Use CPU-Z to check.
Due to the way Oxygen OS's stock kernel works, only 2 of the high performance cores will ever be active, alternating between the 4 cores in an attempt to keep the phone cool and not throttle as often. If you want all 4 high performance cores to be active as well as overclocking it back to its original speeds, you'll need to flash a custom kernel.

jemcik said:
I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?
Click to expand...
Click to collapse
Hi,
would like to share I don't have a similar experience, with NFS NL or Asphalt, phone was consistent with no lags even when it got unbearable to hold.
I as playing and simultaneously screen mirroring over to a TV.
Going from 65 to 25% over a long course.
I normally won't let my battery fall below 20%.
So the thing about Li-ion/pro is that as you go lower voltage decreases so to provide same power draw current increases.
Basically it would heat up faster.
That can be a reason combined with that their might be inbuilt measures to save battery like you said, nor as an engineer I would recommend you to stress your phone at those levels.
I can't explain the lag at 45%, didn't find it might try real racing 3 later to check.
Sent from my iPad using Tapatalk

trapistasajt said:
The 4 high performance cores will only be activated when needed. What app are you using to check the core usage? Every now and then you should see 2 of the high performance cores sometimes coming to life every now and then, with the other 4 power efficent cores being more busy. Use CPU-Z to check.
Due to the way Oxygen OS's stock kernel works, only 2 of the high performance cores will ever be active, alternating between the 4 cores in an attempt to keep the phone cool and not throttle as often. If you want all 4 high performance cores to be active as well as overclocking it back to its original speeds, you'll need to flash a custom kernel.
Click to expand...
Click to collapse
This is consistent with what I've noticed. The time It didn't, a simple reboot helped solve it and it hasn't occurred since.
Also these tools can't monitor the other cores, if you're rooted why not try synapse as helkat suggested
Sent from my iPad using Tapatalk

Denhot said:
This is consistent with what I've noticed. The time It didn't, a simple reboot helped solve it and it hasn't occurred since.
Also these tools can't monitor the other cores, if you're rooted why not try synapse as helkat suggested
Sent from my iPad using Tapatalk[/QUOTE
Thanks man!
I know how the S810 should work!
But I thought the performance issues have only to do with the temps. But now it seems it have also to do with the battery level.
It would be good if someone tries to reproduce the following to verify it:
1. One run Antutu benchmark with fully charged battery and room cool temps.
To be sure the conditions are the same, shut the display off for one or two minutes, than start display again, kill all recent apps and run Antutu test and note the results.
2. Than wait or do something until your battery is down to 20%, shut the display off for the same time, kill recent apps and start Antutu test run again and compare the results.
I've also tried the same after a reboot, with always the same results.
With 100% I get scores between 60 and 66k and with lower capacity (20%) I get only 48 till 50k!
I am not interested about the benchmark results, but I need to know if this only occurs on my side.
Click to expand...
Click to collapse

So, guys!
I have tested it the last few weeks and it is a fact that the performance in benchmarks is dependent by the battery level.
We have tested it with 3 devices and it is always the same.
But thank God, it seems on the devices perfomance themselves (in apps/ui) this has no effect!
But each one can replicate this behavior very easy!

ollimi1 said:
Hi Jemcik, hi Denhot!
I'm facing the same issues on my new device and it's definately not normal!
With a battery level of 19% I was not able to get the 4 A57 cores online, which results in lower system performance. Have you found a solution?
@Denhot!
Maybe we should rename the thread into: IS OPT PERFORMANCE REALLY DEPENDENT ON BATTERY STATUS AND IS IT A ROM FEATURE OR AN ISSUE!?
I think, one of the kernel devs should be able to answer this question.
Click to expand...
Click to collapse
I have the same issue! When battery level goes lower than 20%, my A57 kernels become offline. I checked this with CPU-Z and PerfMon. And this is the same on stock or custom kernel. Now I am using Boeffla kernel. The most frustrating is that my UI suffer from this. I have lot of lags in simple apps, such as calculator or some messengers.

Same issue here, there are threads in one plus forums.
I think the threashold level is at 40 % ?? They made this to keep the battery up. You can also see faster battery drop till the 40-30% mark then it is harder to kill the battery.
I am also dissapointed in this, maybe we can search the kernel sources ? Or is there a daemon app that triggers this?
I received the phone with 20%-30% battery, started an antutu knowing how powerfull 810 chip is, then boom 45k same as the previos phone i had with 801 chipset...i was like what the fxck....runing antutu again with full battery - 66k.

well i have run benchmark in back ground with few game and apps .. and checked with cpuz max that i have notice was around 50-60% cpu load still 2 off those a57 cores were off using this device for 2-3 days it always turns off 2 cores for me rest 6 is working most of the time :/ Even in battery saver mode .. i am not sure if this is a cpuz issue as i have not rooted my device yet so cant say properly ..
Also i face some freq. benchmark issue like in benchmark it scores around single core - 690 multicore - 2.6K .. and if i restarts device it scores normal - 1.1K and 4.5K .. i have no idea whats wrong with this :/

20% Battery Mark
The drop in performance at 20% Battery is standard behavior of the Rom and Stock Kernel. The Big Cluster (A57) is completly shut down to save Battery. If you dont want this you have to use a custom Kernel which is able to switch this Battery saving strategy off. Boeffla Kernel for example can do that.

Read http://www.anandtech.com/show/9828/the-oneplus-2-review/2.
They "optimized" the soc.....
No they just turned off some cores so there is no heat problem.
So I think this is my first and latest oneplus.

they've hit the mark! What the hell, i think they must be sued for false marketing. Its just like buying a car with 400 hp and those hp are only there when i'm parked or listen to music, if i'm on the highway or on the ridge the car has 100 hp...wtf :|

Killer2k8 said:
they've hit the mark! What the hell, i think they must be sued for false marketing. Its just like buying a car with 400 hp and those hp are only there when i'm parked or listen to music, if i'm on the highway or on the ridge the car has 100 hp...wtf :|
Click to expand...
Click to collapse
Calm down lol it's actually good on their part. Shutting down A57 cores on low battery is a good thing because the A53 cores use much lesser battery. If you're out on a trip and have 10% battery, with the A57 cores this will probably drain off within an hour of intermittent usage. When only the A53 cores are active, the battery life will increase greatly.
Companies design phones for average users, not just gamers. If you don't want this feature, root your phone, flash boeffla's kernel and disable the BCL Battery Driver. It's as simple as that

Speed and Battery tweaks.

So I've been following this section for months and just got my a2017u 2 weeks ago. I'm rooted with tenfars tool still locked on b20. I've noticed in the last few weeks a tapering off of new and useful info for this phone and would really like to see what and where everyone is with it? LSpeed? Kernel Auditor? Or any tweaks that have helped either performance or battery life!!! Looking for anything to make this already great phone better!!! TIA

I have been using EX Kernel manager to tweak the settings as kernel auditor was not working properly with the big.LITTLE arrangement. I have upped the readahead value and underclocked the cpu to 1036mhz on the little cores and 1401 mhz on the big cores. working still as snappy and getting +2h SOT. I'm a heavy gamer and Asphalt 8 still plays as fluid as before, even better tbh due to less heating.
If you don't like to underclock, you could try these:
http://forum.xda-developers.com/htc-10/development/pnp-tweak-custom-butterfly-ghostpepper-t3431307

+2h? That's really good! I know overclocking can/could/might damage the CPU. Does underclocking have any of the same risks? I'm rooted and unlocked atm. So no warrenty anyway

aPexalpha said:
+2h? That's really good! I know overclocking can/could/might damage the CPU. Does underclocking have any of the same risks? I'm rooted and unlocked atm. So no warrenty anyway
Click to expand...
Click to collapse
Overclocking can't really harm anything. The excess heat might but it would take a long time and really high temps (you couldn't keep the device in your hands). The only thing you risk by overclocking is a system crash. Just reboot, lower the clock values and voilà ! So no, underclocking can't hurt anything. Overvolting however poses a real threat to the integrity of the components. It's quite the same thing as in computers (except for the heat, you don't always realize it's too hot in a computer).
That being said, is overclocking still even possible on smartphones nowadays ? Just for the fun of it because it's not needed in the least on the Axon 7 .
That's impressive results ! Not sure those hours are needed since the battery is doing well with the software power saver but still a good thing to know.

Still any extra sot is welcome. I'm not a gamer, don't really have any apps that truly need the full power of the sd820 so might give it a shot. Greenify does wonders for standby time.
Not sure if the built in 'intelligent country control' does anything tbh

I'm on my phone most of the day whether it be YouTube play music, texts,calls,etc.. I'm just hoping to find a balance between battery and my multitasking ADHD LOL

Nik2424 said:
I have been using EX Kernel manager to tweak the settings as kernel auditor was not working properly with the big.LITTLE arrangement. I have upped the readahead value and underclocked the cpu to 1036mhz on the little cores and 1401 mhz on the big cores. working still as snappy and getting +2h SOT. I'm a heavy gamer and Asphalt 8 still plays as fluid as before, even better tbh due to less heating.
If you don't like to underclock, you could try these:
http://forum.xda-developers.com/htc-10/development/pnp-tweak-custom-butterfly-ghostpepper-t3431307
Click to expand...
Click to collapse
Mine keeps switching back to 'normal' modes with CPU full on. Any idea how to fix that?

aPexalpha said:
Mine keeps switching back to 'normal' modes with CPU full on. Any idea how to fix that?
Click to expand...
Click to collapse
Yup, I had that problem too initially.
First, I made system changes persistent upon reboot by running this command in Terminal emulator(you can also use adb shell):
reboot disemmcwp
Secondly, you have to disable smart power in the quick toggles.
Once this is done, set your new max values, select the arrow next to it to make it applied on every boot and then reboot your device. It should work.
Note: Everytime you open the EX Kernel manager you will see the speeds jump to max for like 1 sec but if you actually check the cpu statistics you'll see that your settings are sticking and the max clock speed was just for everytime you open the app.

The smart power! I forgot that thing controls the CPU.
So that round arrow thing means apply on boot? I selected that, figured it meant something like that.
Cheers!