Hello,
I've recently switched to lollipop with NovaRom 1.5.5 [5.0.2] and GUYVER Kernel v0.9, the ROM is great, fast and stable but I have CPU throttling issue when playing games.
After 5 minutes of playing, the CPU temperature rise to 60°C and the frequency drop to 1.2 Ghz. that causes games running at very low FPS.
I tried to disable touchwizz DVFS with Wanam Xposed : same problem
Tried to make changes in cpu governor/hotplug/thermal with Kernel Adiutor but issue still present.
I did not have this kind of problem on KitKat roms : once DVFS disabled with Wanam, CPU temperature stayed around 80°C at 2Ghz. The phone was a bit warmer but I was able to play games with a good framerate. Now the CPU is throttling like crazy...
If someone know a way to reduce (or control) thermal throttling on lollipop rom it would be great because I consider to switch back to KitKat for this reason.
Thanks
Related
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?
I found when running Shadowrun Returns with the ElementalX 1.4 kernel http://forum.xda-developers.com/showthread.php?t=2389022 at 1.944 GHZ the back of the Nexus 7 gets hot. This worried me but I noticed when I installed the kernel was an option to use cool thermal throttling. I tried this and now the tablet does not heat up at all. You need to be rooted though to install the kerne of course not sure if ElementalX 1.4 works with stock though, I'm running the latest CM 10.2 nightly. It doesn't seem to affect the performance of either Shadowrun Returns or Wild Blood, the two games I'm playing at the moment, I still have the GPU overclocked to 487 and the Dalvik etc overclocked at the moderate ElementalX setting. . I think being able to run at 1.944 GHZ on my tablet with the cooler thermal throttling is better then running at stock and I believe that even some running at stock have that issue.
Hope this helps others that have this problem.
KedarWolf said:
I found when running Shadowrun Returns with the ElementalX 1.4 kernel http://forum.xda-developers.com/showthread.php?t=2389022 at 1.944 GHZ the back of the Nexus 7 gets hot. This worried me but I noticed when I installed the kernel was an option to use cool thermal throttling. I tried this and now the tablet does not heat up at all. You need to be rooted though to install the kerne of course not sure if ElementalX 1.4 works with stock though, I'm running the latest CM 10.2 nightly. It doesn't seem to affect the performance of either Shadowrun Returns or Wild Blood, the two games I'm playing at the moment, I still have the GPU overclocked to 487 and the Dalvik etc overclocked at the moderate ElementalX setting. . I think being able to run at 1.944 GHZ on my tablet with the cooler thermal throttling is better then running at stock and I believe that even some running at stock have that issue.
Hope this helps others that have this problem.
Click to expand...
Click to collapse
That's a good sign as you know the heat is being distributed effectively away from the internals. You don't need to be rooted to flash custom kernel. And setting different governors will have a major impact on your CPU.
http://forum.xda-developers.com/showthread.php?p=28002345
About The Heat At Least I'm Sure My Advice Is Sound.
Username invalid said:
That's a good sign as you know the heat is being distributed effectively away from the internals. You don't need to be rooted to flash custom kernel. And setting different governors will have a major impact on your CPU.
http://forum.xda-developers.com/showthread.php?p=28002345
Click to expand...
Click to collapse
You might be right about not needing to root to install a custom kernel though I couldn't find a definitive answer in the Nexus 7 2013 forums. I assumed it was needed from using custom kernels on other devices.
My device gets hot while gaming. When you are doing intense gaming like I am I'm sure pretty much any governor will max out the CPU. I know Intellidemand which I use does for sure.
When overclocking, heat is the enemy and it can damage, crash CPUs and even affect the performance of them. I believe if you are concerned about your Nexus 7 heating up (mine does for a good area between the logo and the camera when not using the ElementalX cool thermal throttling) then my advice is good.
Peace.
P.S. How the heck have you done 675 posts since June 2013?
KedarWolf said:
You might be right about not needing to root to install a custom kernel though I couldn't find a definitive answer in the Nexus 7 2013 forums. I assumed it was needed from using custom kernels on other devices.
My device gets hot while gaming. When you are doing intense gaming like I am I'm sure pretty much any governor will max out the CPU. I know Intellidemand which I use does for sure.
When overclocking, heat is the enemy and it can damage, crash CPUs and even affect the performance of them. I believe if you are concerned about your Nexus 7 heating up (mine does for a good area between the logo and the camera when not using the ElementalX cool thermal throttling) then my advice is good.
Peace.
Click to expand...
Click to collapse
Kernel is flashed separately from the ROM. Rooting is only for running apps like Trickster Mod to configure to kernel. Otherwise you can have stock 4.3 ROM with any kernel you want. Heating up will obvious affect performance due to thermal throttling but I was not concerned of damage even when the CPU of my 2012 Nexus 7 got to 80 degrees celsius from running overclocked performance stress test under direct sunlight in a case. If your CPU crashes then it's likely not overclocked correctly. Otherwise if it remains stable under artificial stress test, it will handle any game no problem.
I would really appreciate if someone explain me how exactly this function works?
I mean, tablet don't have fan, so how it keeps the cpu cool, and also what this option does to my nexus in order to keep it cooler?
I would not over clock this device. It us more than fast enough for any Android game.
Throttling does just what the word describes. In basic terms your cpu will be slowed down when getting hot and this defeats the purpose of over clocking.
I won't mention the instability that can be caused or the possibility of doing damage.
Just my thoughts.. To each how own and I do have my I7 pc cpu over clocked big time but it has a huge fan.
Sent from my shiny new(bought last Nov), scratch less Nexus 4!
I agreed, throttling and over clock doesn't make sense but this CPU is underclocked and it is designed to go higher like the one on the galaxy s4 and the GPU is meant to go higher but due to battery life Google underclock it
Sent from my Nexus 7 (2013) using XDA Premium [HD], for the man who wants to use the best tablet screen ever made.
Blade Zero (W1nst0n) said:
I agreed, throttling and over clock doesn't make sense but this CPU is underclocked and it is designed to go higher like the one on the galaxy s4 and the GPU is meant to go higher but due to battery life Google underclock it
Sent from my Nexus 7 (2013) using XDA Premium [HD], for the man who wants to use the best tablet screen ever made.
Click to expand...
Click to collapse
Well , its not under clocked by Google, this is underclocked cheap from the factory , its just a lower bin s600 that has been rebranded as S4 Pro .. If it was regular s600 it wouldn't be underclocked .
theofanis said:
I would really appreciate if someone explain me how exactly this function works?
I mean, tablet don't have fan, so how it keeps the cpu cool, and also what this option does to my nexus in order to keep it cooler?
Click to expand...
Click to collapse
When the CPU reaches a certain temperature threshold it begins to cycle down the CPU speed in order to cool down the processor. It makes the CPU start running at lower frequencies to keep it cool.
Exactly, so a quick oc and u got a better processor without worries of damaging the chip
Sent from my Nexus 7 (2013) using XDA Premium [HD], for the man who wants to use the best tablet screen ever made.
Trickster Mod Thermal Throttling Settings
Hey,
If your CPU is getting hot (especially if it's overclocked and hitting 80 C or near to it) At 1944 the back of my case would get noticeably hot. I still say it isn't good for the CPU. From what I know about overclocking if any CPU gets too hot it can damage the CPU or degrade it over time. I definitely wouldn't want it even getting to 80C before it throttles but I found in Trickster Mod, even the free version, you can set the throttling to custom settings if you are rooted. Custom kernels set their voltages to scale depending on the clock speed which means lower clock speeds, less voltages, less heat. I'd rather keep the temps lower on the CPU then risk damaging the device or degrading it over time. Also you can undervolt the CPU at the kernel different clock speeds so it heats up less. You can run the free AnTuTu Benchmark stability test to see if your clock speed voltages are stable and will not crash your device. I have my CPU overclocked to 1944, thermal throttling down clocks the CPU to 1836 at 73 C, 1620 at 75 C, 1512 at 77 C and 1134 at 80 C. My voltages I lowered and are stable at 1944 - 1087500, 1890 - 1062500, 1836 - 1035000, 1728 - 1025000, 1620 - 1000000, 1512 - 987500. The lower voltages are undervolted as well but not going to list them all here.
Peace,
KedarWolf
P.S. When it was posted in this thread you can install custom kernels without rooting it is correct, I recall reading that at one point. Like it was said to use Trickster Mod, change governors or custom throttling settings you need to be rooted.
Bump bump
So I disabled the DVFS feature which I heard was some kind of thermal control but now the phone is unbelievably hot after intensive gaming session. For example I played xcom for 30 minutes and the phone felt like frying and the battery went down from 86% to 48%. I didn't have any cpu monitor so I don't know what temperature it was on, but it felt very hot. Is this safe? I personally think it isn't and I will probably turn DVFS back on.
I have a n9005 device, running xnote v15 and lean kernel 2.5.1 with default settings.
From what I gathered, DVFS was Samsung's "cheat" to enable awesome scores in Antutu and other apps that measured how well the CPU, etc worked... Disabling DVFS should in actuality leave it cooler as the CPU's/other aren't being artificially throttled up to maximum...
Correct me if I'm wrong...
lvnatic said:
So I disabled the DVFS feature which I heard was some kind of thermal control but now the phone is unbelievably hot after intensive gaming session. For example I played xcom for 30 minutes and the phone felt like frying and the battery went down from 86% to 48%. I didn't have any cpu monitor so I don't know what temperature it was on, but it felt very hot. Is this safe? I personally think it isn't and I will probably turn DVFS back on.
I have a n9005 device, running xnote v15 and lean kernel 2.5.1 with default settings.
Click to expand...
Click to collapse
Isn't the dvfs stock kernel related?
4aces said:
Isn't the dvfs stock kernel related?
Click to expand...
Click to collapse
No its TouchWiz system based. You can set it in Wanam Xposed.
It may sound like it's related with the kernel, but the kernel does not see what is being run on the device (especially only benchmarking tools) and then ramps up the device to perform better than expected.
Sent from my SM-N900W8 using Tapatalk
Hi,
I know that thermothrotteling is a feature to protect the cpu against damage. But what I notice that the temperature on my Note 910F is raising quire fast and that I am running into performance issue quite easily. Just playing arround the internet , watching something at youtube is bringing the device into the throtteling mode and than everthing is in slow motion (no hardcore games are neccessary). On my Note 3 I was never aware about such a situation.
Im using the Echoe rom 1.1 with the Ecoe kernel 3.5 (and fairly conservative power saving settings), but it is not kernel related because on stock it is the same.
Anybody facing a simelar situation?
Best regards,
dingolino
Thats not normal :/ i guess sd being 28nm and clocked at 2.7ghz does generate some heat
Your not alone. That is the very reason why I rooted my phone yesterday. The Samsung DVFS is very aggressive on my note 4 with 4.4 kittkatt.
Iv noticed in benchmarks once my phone heats up a little it drops the GPU and CPU down to about half speed and im only getting half the score and in gaming after a few minutes I would start to notice a little lag and my cpu speed would be staying at 1297. It slowly drops down to that then stays around there.
I disabled the Samsung DVFS and use setcpu aswell to keep it at the full speed while gaming and it works great now and the temps are hardly any different.
Many thanks for the feedback.
I have switched off Touch boost und set Max cpu to 1.9GHz
Will see how it works.
Best regards
dingolino
Gesendet von meinem SM-N9005 mit Tapatalk
It is quite annoying have such a fast phone but it downclocks both the cpu and gpu after a few mins of gaming.
A good test is GTA vice city with the settings cranked up.
With DVFS enabled once it hits about 56 degrees it starts to throttle and downclocks the gpu and cpu to about half and the game becomes a laggy mess.
With DVFS disabled its as smooth as butter but the temp goes up to about 70 degrees. Whats the max safe temp for this phone?
Matson123 said:
It is quite annoying have such a fast phone but it downclocks both the cpu and gpu after a few mins of gaming.
A good test is GTA vice city with the settings cranked up.
With DVFS enabled once it hits about 56 degrees it starts to throttle and downclocks the gpu and cpu to about half and the game becomes a laggy mess.
With DVFS disabled its as smooth as butter but the temp goes up to about 70 degrees. Whats the max safe temp for this phone?
Click to expand...
Click to collapse
I do not know the safe setting.
I am using the echoe kernel and this kernel offers the “intellithermal“ feature from faux. You can set the temperatures when frequency throttling should start as well as kernel throttling. They give in the faux app also some recommendations.
Maybe you give out a try.
But I am disappointed because the throttling is affecting “normal“ life not only hard core gaming and this is for me somewhat a design fault.
At least on my Note 4 F
I never had this on my previous devices that I cannot watch a movie which is stored at my sd card. I have a number of tutorial and maintenance videos which are handy to watch on the device.
Best regards
dingolino
Gesendet von meinem SM-N910F mit Tapatalk
I can confirm this on the N910W8. As soon as the device heats up the frame rates drop dramatically. I also don't game. Just day to day usage. It's strange that some fairly simple tasks can heat things up so much.
I removed my ScanDisk 64GB Class 10 SD card which seemed to improve the heat problem.
Also, when its cool it smokes through GeekBench 3. After it heats up it runs slower then a Galaxy S3.
Just you my friend, I don't have that problem
Sent from my SM-N910F (Note 4)
Donkon....can you let me know what your idle phone cpu temp is? you can use the CpuTemp app and just let me know what it idles at on your homescreen and what it heats up to in a demanding game. Just make sure its the CPU temp and not the battery. thanks
It would be good to compare.
Also I was just doing some tests and these are my results.. im curious to know if these are normal temps.
My phone idles at around 34-38 degrees c.
With DVFS enabled it never goes above around 56 degrees as that's when it starts throttling down.
Iv never had any slowdowns in youtube or videos or anything like that. Its only gaming really and benchmarks where it starts to throttle once it heats up and in a game like gta it starts to lag abit once it throttles as it takes the gpu and cpu down to about half speed.
With DVFS disabled im able to run the full 2647 cpu speed when gaming and its as smooth as butter. My temp in riptide goes up to 58 degrees. In GTA vice city it goes up to around 70 degrees and in the unreal benchmark demo it goes up to about 74/75 degrees. Do these sound like normal temps when your running the full speed of the cpu?
Yeah, it is ok.
The Exynos start throttling at 80°C.
Matson123 said:
Also I was just doing some tests and these are my results.. im curious to know if these are normal temps.
My phone idles at around 34-38 degrees c.
With DVFS enabled it never goes above around 56 degrees as that's when it starts throttling down.
Iv never had any slowdowns in youtube or videos or anything like that. Its only gaming really and benchmarks where it starts to throttle once it heats up and in a game like gta it starts to lag abit once it throttles as it takes the gpu and cpu down to about half speed.
With DVFS disabled im able to run the full 2647 cpu speed when gaming and its as smooth as butter. My temp in riptide goes up to 58 degrees. In GTA vice city it goes up to around 70 degrees and in the unreal benchmark demo it goes up to about 74/75 degrees. Do these sound like normal temps when your running the full speed of the cpu?
Click to expand...
Click to collapse
Which kernel are you using and what means “DVFS“?
Which app are you using for the kernel settings?
Best regards
dingolino
Gesendet von meinem SM-N910F mit Tapatalk
Im using the stock Kernel. Iv only rooted. I haven't installed a custom rom or Kernel yet.
the DVFS is samsungs own voltage and frequency control program. Its what causes the aggressive thermal throttling in kittkatt 4.4. Its been there for along time but in 4.4 its pretty much too aggressive.
When you disable it the phone wont throttle back the GPU and CPU and a silly 56 degrees so it wont start to lag in games after a few minutes.
If anyone has GTA vice city or the epic citadel unreal demo can they run it and tell me what there CPU temp goes up to in those.. I just want to make sure mines normal as it gets very hot. With DVFS it should go up to about 55-60 and without it will be around 70.
Does anyone have freezes followed by restarts when disabling DVFS for just some apps (using blacklist)? I have this problem and disabling DVFS for the whole system really annoys me (opening app speed is slowed down + power saving mode requires a restart). I'm using the exynos C version.
I had this issue that on some games the fps start to be dragged down after 15, 20 min. I've instaled new custom kernel for thermal throttle due to cpu heating, but seems to be related to gpu, as the cpu stays constant at about the same speed. I have seen a fix for s4 on the web: to change a value in this file min_pwrlevel, though there is not on this os. If Anyone has an fix for gpu thermal please give advice. Cheers.
http://forum.xda-developers.com/showthread.php?t=2433045
http://forum.xda-developers.com/samsung-a-series/general/kernel-f93-kernel-sm-a500f-stock-t3160317