I've noticed that when the battery gets below 35%, many games start lagging. I couldn't figure out what was causing this so I had a hunch that the OS is forcing the cpu to under clock even under heavy use to conserve battery. I installed setcpu and forced the cpu to max and sure enough, the games were playing smooth and home screen transitions were smooth. I did this a few times just to confirm. So is this true? Does the stock OS force the cpu to under clock even under heavy use when the battery is low?
And just to clarify, I'm not talking about cpu throttling. I understand android devices throttle the cpu based on use.
dsmboost said:
I've noticed that when the battery gets below 35%, many games start lagging. I couldn't figure out what was causing this so I had a hunch that the OS is forcing the cpu to under clock even under heavy use to conserve battery. I installed setcpu and forced the cpu to max and sure enough, the games were playing smooth and home screen transitions were smooth. I did this a few times just to confirm. So is this true? Does the stock OS force the cpu to under clock even under heavy use when the battery is low?
And just to clarify, I'm not talking about cpu throttling. I understand android devices throttle the cpu based on use.
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setCPU?
It does exactly that. Make a profile for Battery < 35 and set it to your clock speed.
Sent from my Samsung Galaxy S II w/ CM9
I've been running CM11 (feb 14 build) now for about 2 weeks with terrible battery drain during use. The phone gets really hot when i'm just browsing facebook or reading a news app.
I looked at the CPU usage and it seems it's either at max cpu, min cpu or deep sleep. That is strange first of all, it never or rarely uses the frequenceis in between. Then i took a look at the battery graph. When the phone is sleeping, the battery is holding really steady, but as soon as I start using it all hell breaks loose and the graph looks like an olympic downhill slope. The strange thing is that the main battery source is the screen which is odd beause on stock (With better battery life compared to this) Android System was the main battery killer.
I then took a look at BetteryBatteryStats. First thing i noticed: 50-50 deepsleep and awake which is pretty astounding.
The wakelocks are msm_hsic_host and PowerManagerService.Wakelocks. But this is strange because it's still pretty much a clean install.
So my theory is that the CPU governor is not functioning propperly and blasts to max cpu as soon as a wakelock is requested and when the phone is in use it also blasts max cpu. I don't know.. that's just what I think is happening with the data i have.
Any ideas?
Updated section:
After clearing cache through recovery and doing a hard reset, the uAh has gone back to 3142000. Standby time seems good with the battery losing 7% overnight. It does charge quite quickly from 0-100 in about 2h. The previous heating issue remains with cpu monitors showing that the cpu jumps to high clock when I touch the screen. I don't see any change in which apps use the most battery with the screen taking up the most as before the problem started.
The heat appears to be what is draining the battery but I can't find any single app that causes it to ramp to max.
Pictures:
No-frills is set to stock settings to see how the phone handles the actions
2nd picture is when phone is idle
3rd picture is immediately after swiping through a few tabs and scrolling through some pages in the app which causes cpu clock and load to increase
Old sectionFor when battery uAh was low)
I've had this Z1 for about 11 months. I can only get around 2.5h on screen time with regular usage. The battery uAh was only 1848000 Recently it fell to the 1700s. Calibration appears to reduce the value further. The phone seems to heat up in about a minute or two no matter what app is running.
The phone is rooted on stock 4.4.2
I have tried updating to Lollipop before but received an error due to rooting, so I don't think anything changed.
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alantay11 said:
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sounds like it's time for you to replace your battery.
You may try to disable the "input boost frequency"
By default when you toch the screen, cpu frequency of two cores instantly jumps to around 1400 to preventing any lag but it seems to use more power and causing heat
I have disables this and since then I'm no longer have any heat issue and also the battery life is so much better now but you may exprience a little lag while scrolling on heavy web pages but thats all
Btw i'm on .157 and using Kernel Adiutor for cpu tweaks
You may disable this by the app mentioned above or by editing sys.somc.touch_perf_kick=1 from 1 to 0 in buid.prop or adding this line
A month ago or so, i had this random period of time where perfZ started to show "-" for temperature ( i assume its gpu temperature because it doesnt match with battery or cpu temp from another app) and my phone was heating up much more in games but so was the performance was way better.
Normally after thermal throttling kicks in and device reaches heat equilibrium, my battery would sit around 38-39C, cpu at 42-43C. But in that time period where it showed "-", my equilibrium was battery sitting at 44C, cpu at 47-48C. Phone was considerably hotter to touch but you could still game on it. And performance was way better, it would fall to 50fps min instead of 40fps, which is very noticable. (Dont have exact numbers maybe a bit better)
Idk how this happened as it randomly happened one day but does anyone know how to make this work? My device isnt rooted. (s10+ exy)
(Small note: Using game plugins at max performance or custom doesnt help, maybe they arent optimised for dead by daylight, because thats the only game i play)
Most of your know about this problem. People complaining about phone heating, phone shuts down in the middle of gaming, heating while gaming with 90hz in all forums. But no one come up with the solution and Some even told us to send the phone to get serviced [yeah, but even then the service center will say that it is motherboard fault, which is the costliest replacement of all around 25k INR]
[NOTE: I want this to be heard by ASUS to release software update. If you are a moderator of any Asus forum or who could contact ASUS dev, share this thread with them]
First and foremost we have to understand what is causing the problem. And everyone who is facing the problem knows Its the Temperature causing the shutdown. But ASUS never implemented any Warnings to to the UI, instead they give active cooler to 256+ GB version, while leaving 128 GB owners stranded. I faced the shut down problem when updating to A10 around a year back.
Every time when I game outdoor on warm condition (around 30 degrees) and After few months of updates, it started to shut down very frequently. So I switched back and forth to custom ROMs and even to stock A9s.
Faced the worst embarrassment "Gaming phone shuts down in front of cousins who were playing in budget phone"
Finally my Gaming phone become a phone which cant game anymore.
Finding the real Problem:
After researching about android thermals and I even tried to stop the shutdown from happening to my device. But I failed and my device successfully shuts down when there is a chance.
I switched to custom rom and installed GCAM. On taking few photos, my phone died. After restarting and enabling the CPU overlay which shown the temperature and clock speed of CPU. Opened GCAM and took some photos the temperature rose from 40-65 degrees in an instant and it died and I noted all the CPU cores are ran at max clockspeed.
So, I switched back to stock rom, used Armoury crate to limit and limited the CPU clock speed of GCAM, Again same result phone died (like the custom rom Armoury crate displayed the max clock speed of 2.96 Ghz, though the app was being set to use lower clock of 1.92 Ghz)
After using and failing to limit CPU clock using kernels, It was conclusive that the temperature is not causing the issue, "NO_THROTTLING" of CPU does.
During heavy load on CPU like gaming or benchmarking, all CPU cores will run at high clock speed, which increases the temperature of CPU. To counterfeit this, the system applies slightly lower max clock speed to all its cores, makes the CPU to run at slightly lower clock speed. As the temperature increases the max clock speed will get reduced till it can no longer produces heat (auto cooldown) on doing work. Same applies for GPU. This is called throttling.
What will happen, when throttling doesn't happen? All CPU and GPU cores run at max speed which increase the temperature, when there is nothing to stop the rising temperature. The temperature rises further [A10's thermal management kicks in] and shuts the device.
During charging, the CPU temperature will be higher due to battery dissipating the heat, so when there is even slight load on CPU (background activities like downloading) rapid rise in temperature even for few milliseconds kills device.
Maybe none of the testing devices have this problem & none of the developer devices have this problem, but this problem does exist and I'm asking ASUS to release the patch for devices which lacks controlling CPU clock speed via Armoury create, and fix the device which doesn't throttle (thermal engine)
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Temporary Solution: Manually down clock the CPU and GPU
After so many failed attempt to apply lower clock to CPU, I found the location where the max clock speed file was located.
[I modified the file and put together in tasker (paid app to automate things) found my CPU finally throttled again]
I shared the values taken from asus thermal management applied those values and uploaded it.
Be careful, This might brick your device if used improperly, if that happens you might need to flash raw image so backup anything important. Don't point me the finger afterwards. If you are okay with that lets proceed.
We Need root access and root browser. If you have root access open any root browser and Extract the attached zip file
It has two folders and some files. CPU Reading folder has all the CPU max clock speed you can use to apply lower clock.
the folder contains 9 digit number like 295241178
First 3 number denotes max clock speed of Prime core i.e., 2.96Ghz
Next 3 numbers denotes max clock speed of Big core i.e., 2.4Ghz
Last 3 number denotes max clock speed of little core i.e., 1.78Ghz
for GPU First 3 number is the MHz of max clock (6750 is 675 MHz)
Select the clock speed you need
(lower number = lower clock speed = low performance = less heating
Higher number = high clock speed = better performance = more heating)
CPU has 9 different clock speed littleBigPrime combos
Gpu has 5 different combos
Applying clock speed
Replace the CPU file cpu_max_freq to the folder /sys/module/msm_performance/parameters
Replace the Gpu file max_gpuclk value to the folder /sys/devices/platform/soc/2c00000.qcom,kgsl-3d0/kgsl/kgsl-3d0
Replace those files and see if your device shuts down on gaming, if it does choose the lower value and repeat the process.
Everything should work properly now. It might not be great solution but it will prevent shutdown.
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Im creating an app to solve this, which is in progress. Will update once everything is done.
por favor, preciso deste aplicatirvo!
venkatesh321 said:
Im creating an app to solve this, which is in progress. Will update once everything is done.
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Are you done making the app, cuz i really need it rn
its power ic related issue. throttling app is reducing the performance