Hello, yesterday my Note was low in power. It behaved strangely such as extremely lag and Dolphin browser crashed (could be another issue). The power level was 10%. Is there a relationship between low power and strange behavior such as extreme lag?
Cpu probably goes into lower speed modes to reduce battery consumption. Most likely s feature of the stock kernel.
Are you the type to leave the device unplugged overnight? Whenever you're around a power source it wouldn't hurt to top of your devices. ..
http://lifehacker.com/5875162/how-often-should-i-charge-my-gadgets-battery-to-prolong-its-lifespan
I don't think any of my devices have seen battery levels drop below 20%. I usually have the Note pro drop down to 50 and then I charge it.
Sent from my SM-P900 using Tapatalk
Do you have power saving enabled? If yes, there's an option in there to turn off CPU limiting.
Related
In the power options, under processor power management, the maximum processor state on battery seems to always revert back to 100% after a reboot or changing power plans. Any ideas why the setting won't stick?
I noticed this as well
..very annoying
is that the only setting you noticed reverting? or are there more?
I assumed win8 handles processes differently requiring less battery consumption.
Sent from my EVO using xda premium
but that isn't the issue
if u go into settings and change the 100% to anything else
it always reverts back .....very annoying ....marked difference in battery life noticed
If you create a new power plan and use it, the settings will stay after a reboot. This is what I did.
Did anyone try 20% CPU so far ? And if so, how is the battery life?
I won't mind getting Surface Pro if I can throttle down its CPU when on battery to Surface RT's speed for a longer battery.
I currently have a RT version with me
Power consumption curve for CPUs is very non-linear. 90% from 100% will probably save you more power than 20% from 90% will. You'd just be wasting a ton of processing capability.
GoodDayToDie said:
Power consumption curve for CPUs is very non-linear. 90% from 100% will probably save you more power than 20% from 90% will. You'd just be wasting a ton of processing capability.
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Not only that but the windows throttle percentage is not really as specific as a 0-100 range would suggest, so even if you set 20% it might limit the cpu to its minimum frequency.
If you use a tool such as this you can see what the current frequency is: http://www.cpuid.com/softwares/tmonitor.html
With my laptops (much slower) Core2Duo the minimum frequency was too slow, but about 50% of the max worked well and dramatically reduced the heat under load.
Some people reckon it is better to allow the cpu to use its full frequency so that it finishes the job faster and can move back to the lowest idle state. I am not sure that really applies to i5 (which doesn't support the ARM-style idle states that haswell will) and like you say the power consumption at lower cpu frequencies doesn't vary much. My experience with windows is that sometimes for no apparent reason at all programs such as word or chrome sit using 50+% of the cpu and you have to restart the process. It doesn't happen often at all but you might not realise until your battery is low. With the pro's i5 I expect you could get away with quite a low cpu frequency and would at least know you will always get roughly the same battery life.
This is the same problem that w700 has, an even earlier product. This situation made the biggest thread in the acer community because people are angry, some even took back their products and traded for the surface which made it the same than people realized it was not the w700 itself. Throttle stop didnt work because it seems to be more temp related.
Here are some interesting topics
http://community.acer.com/t5/Acer-T...rottling-Turbo-Boost-issues/td-p/6873/page/28
http://forum.tabletpcreview.com/acer-gateway/54122-w700-throttling.html
Walderstorn said:
This is the same problem that w700 has, an even earlier product. This situation made the biggest thread in the acer community because people are angry, some even took back their products and traded for the surface which made it the same than people realized it was not the w700 itself. Throttle stop didnt work because it seems to be more temp related.
Here are some interesting topics
http://community.acer.com/t5/Acer-T...rottling-Turbo-Boost-issues/td-p/6873/page/28
http://forum.tabletpcreview.com/acer-gateway/54122-w700-throttling.html
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Click to collapse
Actually, it is nothing like that problem. The OP is talking about manually limiting the max clock of the device using the Windows setting that has been there for a while now.
I just read this over on phonearena and wondered if anyone else saw it and has tried it.
http://www.phonearena.com/news/How-...-visibility-of-the-LG-G3-without-root_id58888
Im tempted to try it but hesitant too.
It'll increase the overall performance of the phone, at the cost of a little bit battery life, since turning off thermal mitigation allows the cpu to clock at a higher speed more often while ignoring the heat.
I cant decide if its worth it. For the most part I dont have any complaints about the brightness but I also use Lux.
While it was a different phone I did this same thing with my LG G Pro with no adverse effects to the phones operation in just over a year. It is still going strong in fact, so I dont fear phone damage by doing this but on this phone I havent seen the need for it yet.
I've been using this setting for some time now. I see no decrease in battery life, indeed I've seen nothing negative from it.
Sent from my LG-D850 using Tapatalk 2
I've had both thermal settings off for a while now as well, it only powered down from heat once and that was because I was chrome casting Netflix and playing a intensive 3d game. Other than that it's fine, however I would expect it to get hot doing 2 large processes anyway. Battery life is still 4-5hiues SOT
By doing this my phone over heats and the turns itself off. Was running fine for a while with it on but I guess it was to much for the phone to handle.
my note pro 12.2 temperature gets quite high 40C when using it even if the conditions are relatively cold outside is this normal?
my samsung s3 would heat up too that's why i never closed the cover properly to let the hot air escape.. this made a big difference as it wouldn't go up past 32C even in warmish indoor environments (also i used power saving and lowest brightness). i apply the same principles to the tablet, power saving, lowest brightness or auto brightness yet the top part by the camera at the back i can feel heating up and is quite warm.. is this normal? do you other guys have high temps?
i read a review saying it doesn't really go above 35.6C which is BS as mine goes to 40C. i know because the cover is not open the hot air cant escape so the CPU is running up or the battery is heating up or maybe both. i use OS monitor to monitor my battery temp and voltage.
do i have a defective unit possibly? this might also explain why it reboots randomly however i know for certain when it rebooted the temperature was low as i was using it in like 4C conditions so the temp was under 30C max however now the temperature outside has risen i think that's playing a part. im getting sick of all these samsung issues. their quality control needs to be better or at least create so air vents so the battery can breathe. temperature kills lithium ion and i dont think you can change this battery easily
http://forum.xda-developers.com/galaxy-note-pro-12/help/how-hot-device-t2835997
Sent from my SM-P900 using Tapatalk
What you're reading is battery temp, not cpu temp. 45c and below is perfectly fine. As for cpu temp, gaming can bump that up to 80-85c. Thermal shutdown occurs at 105c (SM-P900)
Hello. I'm new with the account here, but been reading this forum for years.
I'm creating this thread because my new Nexus 5 (which I have for 20 days now) is overheating more than a normal mobile device should.
When i bought it, it had 4.4.4 Kit kat android, and I had that one for about 5 days, and in that time, I didn't notice any overheating, or maybe didn't pay attention, can't remember really.
But after installing official Lollipop 5.0.1, the device is heating pretty good even when browsing internet for 5 minutes, at about 30-40% brightness.
**** Please tell me if some of your devices are acting the same, and is it worth a try to install back an older android to try if it will stop overheating, or my device may be faulty and should I take it back for another one (or maybe switch to LG G2) ?
Because I'm still unable to post image links, i will write it down:
- Ambient temperature: 23 degrees Celsius
- The temperature sensor is taped on the back side, at the side of camera, this is where it overheats most. (even if not using camera)
- Phone temp after staying on standby with screen off: 28 C (it's not warm but it is warmer than desk which it is sitting on)
- After staying idle on home screen with screen on for 10 minutes (50% brightness): 30.5 C
- After chatting on Messenger for 10 minutes: 34.3 C (feels warm)
- After recording video for 4 minutes: 41 Celsius!!! (almost uncomfortably hot in the whole upper half of the phone, both the back side and the screen)
- After 15 minutes letting it cool down, with screen off of course, it is 38 C (still hot to touch), and it stays like that untill I reboot the phone, then it cools down.
The test took about 50 minutes, and after that, battery was drained for about 25%.
-While charging, the phone does not overheat, just gets a little warm which is OK. (haven't tried wireless charging)
P.S. I don't play games on the phone...
Please act quick in case I should return the phone...
the only time my phone gets hot is when im intensively doing a lot of things..
for example.. im playing ingress, have tether ON, and my two sons are using their tablets connected to my phone playing ingress too..
but if i turn off the game and turn off tether, it cools down..
to me it sounds u have something intesively using your CPU and perhaps GPS and other radios.
hold power button.. when PWR OFF shows, long press it and reboot into SAFE MODE...
use the phone for a bit and see if it gets warm... this should tell you if its apps installed.
I only used wifi, no tethering, no GPS, 3G, NFC or any other radios, cell signal is good so phone is not searching for it.
- In safe mode, it still gets warm when using camera. When browsing internet and watching images in google search, also but just mild warm..
- But after sitting and thinking, I've found a problem! After recording with camera and leaving it to cool down, it didn't cool down because it had to make an effort to upload that 5 min video on Google drive via Auto backup!
After turning the Auto-backup off, it is now much cooler!
I will post tomorrow with the results, if something changes...
Anyway, thank you!
First of all, "warm" doesn't mean anything.
Battery temperature does not mean much either, as the CPU is what generates the most heat.
There is a battery temperature throttle that reduces the CPU frequency, but it is almost entirely pointless as the CPU will always reach it's own throttle temperatures MUCH, MUCH earlier than the battery will. The CPU starts throttling at 65C CPU temp (NOT battery temp), and shuts itself down at about 105C CPU temp. Unless your battery somehow reaches a batterytemp of 70C+ (nearly impossible because the CPU will always hit it's throttle first), then I would never even take it into any sort of consideration unless you have a physical battery defect.
Using the camera generates heat since it's CPU and power intensive.
Using the phone in general will generate heat.
Keep in mind that mobile devices are passively cooled, not actively cooled with a fan/liquid.
Not sure what you're so worried about.
Lower your brightness
Lethargy, thank you for a short physics lesson. I'm already into physics and cooling systems so all is clear. I was just worried a bit because all of my previous phones weren't getting this warm (hot), but also never had a multi-core processor in phone eather, maybe that's the reason why I never experienced this before.
Battery temp (measured with app) gets up to 40-42 degrees Celsius, while the phone case gets up to 41 when recording video. Of course that temp won't damage the device, I'm not worried about the processor, but that temp is degrading battery life, in long term.
And about the brightness, phone is not meant to be used at lowest brightness all the time, so that shouldn't be an excuse for high temps. Just sayin'...
Sent from my Nexus 5 using XDA Free mobile app
AlexSRB said:
Lethargy, thank you for a short physics lesson. I'm already into physics and cooling systems so all is clear. I was just worried a bit because all of my previous phones weren't getting this warm (hot), but also never had a multi-core processor in phone eather, maybe that's the reason why I never experienced this before.
Battery temp (measured with app) gets up to 40-42 degrees Celsius, while the phone case gets up to 41 when recording video. Of course that temp won't damage the device, I'm not worried about the processor, but that temp is degrading battery life, in long term.
And about the brightness, phone is not meant to be used at lowest brightness all the time, so that shouldn't be an excuse for high temps. Just sayin'...
Sent from my Nexus 5 using XDA Free mobile app
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The only thing that sounded odd was how it wasn't cooling down until you rebooted, but it sounds like you figured that out with the automatic upload setting.
41-42c battery temp can be normal after prolonged usage, though personally I usually see that after a short gaming session. My brightness is around 40% and high brightness will cause extra heat.
Otherwise the phone is very thin so you can feel the stacked SoC and RAM heat up through the skin fairly easily, right around the camera area as you mentioned.
I think each device and CPU is slightly different and can vary by a few degrees under load as well.
AlexSRB said:
Lethargy, thank you for a short physics lesson. I'm already into physics and cooling systems so all is clear. I was just worried a bit because all of my previous phones weren't getting this warm (hot), but also never had a multi-core processor in phone eather, maybe that's the reason why I never experienced this before.
Battery temp (measured with app) gets up to 40-42 degrees Celsius, while the phone case gets up to 41 when recording video. Of course that temp won't damage the device, I'm not worried about the processor, but that temp is degrading battery life, in long term.
And about the brightness, phone is not meant to be used at lowest brightness all the time, so that shouldn't be an excuse for high temps. Just sayin'...
Sent from my Nexus 5 using XDA Free mobile app
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Click to collapse
Your temperatures are fine and you shouldn't worry about it. It's average for a Nexus 5, and there are throttles/shutdown temps anyways, for both the battery and CPU. I've had mine for a year and there hasn't been any sort of issue, normal usage should be negligible to the condition of the battery.
Ok, everything seems to be ok then. Now I can go to sleep without worrying Thanks guys!
Sent from my Nexus 5 using XDA Free mobile app
Starting a month and half ago my LG Nexus 5 would get hot near the camera (Where the CPU is) and drain the battery unusually fast, even without an active app opened, now I can not keep it on outside because of the drain and even if it stays connected to a charger, it slowly builds a charge because of the drain.
I recently changed the battery and the problem continues to persist.
This started happening around when I went over all the settings in the phone and apps, I fear I might of turned on something that is causing it in the background but I can not figure out the exact problem.
Please help.
minun said:
Starting a month and half ago my LG Nexus 5 would get hot near the camera (Where the CPU is) and drain the battery unusually fast, even without an active app opened, now I can not keep it on outside because of the drain and even if it stays connected to a charger, it slowly builds a charge because of the drain.
I recently changed the battery and the problem continues to persist.
This started happening around when I went over all the settings in the phone and apps, I fear I might of turned on something that is causing it in the background but I can not figure out the exact problem.
Please help.
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Click to collapse
Check the frequencies of the cpu, sometimes the minimum value gets stuck to a higher than needed frequency.
You can do so by using Kernel Auditor (root) or CPU-Z. Obviously if they're higher you'll need to set them lower, 300 MHz is the normal minimum freq. If that is not the case then install Gsam Battery Monitor and enable extra stats, you should be able to figure something out with that one app.
CriGiu said:
Check the frequencies of the cpu, sometimes the minimum value gets stuck to a higher than needed frequency.
You can do so by using Kernel Auditor (root) or CPU-Z. Obviously if they're higher you'll need to set them lower, 300 MHz is the normal minimum freq. If that is not the case then install Gsam Battery Monitor and enable extra stats, you should be able to figure something out with that one app.
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thank you, it was the outlook app going rouge