Has anyone else notice that their M8 is noticeably less responsive when the battery gets low (usually under 15%)? I am aware that the Verizon model does not have the extreme power saving mode feature; however, I noticed something funny. When the battery is low and I go into developer options to turn on high performance mode, it lets me know that I cannot due to power saver being on (see screenshot). When the phone's battery is not low, I do not see this message and I can enable high performance mode. My guess is that the phone is entering some sort of power saving mode automatically when the battery gets low because I notice that it lasts quite long on low battery and is less snappy.
Fast start to finish here. But I'm running custom so.
Sent from my HTC One_M8 using Xparent BlueTapatalk 2
Can anyone else on stock replicate this issue or did I just get a defective M8? Thanks!
koolaid159357 said:
Can anyone else on stock replicate this issue or did I just get a defective M8? Thanks!
Click to expand...
Click to collapse
It honestly sounds like power saving mode is kicking in. Which does at 15% on stock if power saving mode is enabled ( not extreme power saving mode just the standard one)
If something weird is going on and it is not providing you with a notification that it is what's happening, next time it happens look at /sys/devices/system/cpu/cpu0/scaling_max_freq if it's at 2265600 then it's not in power saving mode, however if it's at 1190400 then power saver is on. Other signs of power saving mode would "normally" be
Display brightness reduced
Cpu reduced speeds
Vibration feedback turned off
*data connection put to sleep when screen off
Edit:
Turned my power saving mode on and I also can not turn on high performance mode. So I bet that is EXACTLY what's going on.
last edit,
if you have root you can launch the power saving settings ( even tho the option is not there under the power sub menu vzw left all the code in)
to do this from terminal emulator at # am start -a android.intent.action.MAIN -n com.htc.htcpowermanager/com.htc.htcpowermanager.powersaver.PowerSaverActivity
this will launch the settings for power saving mode, and from here you can see if it is set to on, if so just turn it back off.
sent from space
runandhide05 said:
It honestly sounds like power saving mode is kicking in. Which does at 15% on stock if power saving mode is enabled ( not extreme power saving mode just the standard one)
If something weird is going on and it is not providing you with a notification that it is what's happening, next time it happens look at /sys/devices/system/cpu/cpu0/scaling_max_freq if it's at 2265600 then it's not in power saving mode, however if it's at 1190400 then power saver is on. Other signs of power saving mode would "normally" be
Display brightness reduced
Cpu reduced speeds
Vibration feedback turned off
*data connection put to sleep when screen off
Edit:
Turned my power saving mode on and I also can not turn on high performance mode. So I bet that is EXACTLY what's going on.
last edit,
if you have root you can launch the power saving settings ( even tho the option is not there under the power sub menu vzw left all the code in)
to do this from terminal emulator at # am start -a android.intent.action.MAIN -n com.htc.htcpowermanager/com.htc.htcpowermanager.powersaver.PowerSaverActivity
this will launch the settings for power saving mode, and from here you can see if it is set to on, if so just turn it back off.
sent from space
Click to expand...
Click to collapse
Thanks for the reply, I agree with you on that one, I'm pretty sure power saving mode is being turned on somehow. I'm not rooted and on stock, so I don't have a toggle for power saver mode. Any idea how it could have turned itself on? Aside from rooting, is there anything short of a factory reset that I can do to get rid of it?
koolaid159357 said:
Thanks for the reply, I agree with you on that one, I'm pretty sure power saving mode is being turned on somehow. I'm not rooted and on stock, so I don't have a toggle for power saver mode. Any idea how it could have turned itself on? Aside from rooting, is there anything short of a factory reset that I can do to get rid of it?
Click to expand...
Click to collapse
Well I would first ask if any of the things I said happen when you phone goes below 15% such as
Display brightness reduced
Cpu reduced speeds
Vibration feedback turned off
*data connection put to sleep when screen off
Some of these you can check without root. Like the screen gets dim or the vibration turns off. If so then let me know.
Theoretically a factory reset would clear it. However you could try to clear data from the settings app.
sent from space
+1 on Power Save coming on.....I am on Viper so I see it is turned on at 15% with the quick settings, so I tap it to turn it off (which I know there isn't a stock equivalent)....but when it is on...the phone slows like a turd.
Related
The sleep option in the power menu, is it any different than taping the power button to to turn of the screen? (or letting the screen time out)
Sleep mode on a computer is a true low power state, does Android support this? I know that when the screen is off on my N1 that the OS is still running, because it has to for proper function as a phone. Now the Gtab does not need to keep running when you shut off the screen, so a true sleep mode would be great.
I have selected the sleep mode before, and to me it did not seem to take any long to "wake up" when I tapped the power button.
I think that if it is a true sleep mode, then it would be nice if we had options like a standard computer. Set the screen time out and then a separate time to enter sleep mode automatically when there is no user activity. Have it function like that when you tap the power button as well, auto sleep mode after 5 minutes or so.
It's the same as tapping the power button. Try to charge the battery full, and put it to sleep mode overnight. Do the same thing for tapping the power button. I've done this and next morning the battery is still at 100 percent full.
The battery indicator is slow to refresh upon waking back up I noticed, I guess experimenting could show if there is any real difference. Still , I would like to know from a deeper perspective, If the source is ever released someone with more knowledge than me could examine the code.
I too was wondering about the affect of sleep vs auto timeout on battery life, so I put my TnT Lite 2.0.0 to test:
(1) with sleep: after 12 hours the battery meter drops by 17% (I actually did this twice and got basically the same result)
(2) with auto-time out: after 8 hours the battery meter drops by 12%
So it seems that sleep and auto-timeout have the same affect on battery.
I am surprised to hear in post #2 that there was no change in battery life; after all, the CPU still runs, albeit at a lower clock. I do notice that when the unit comes back on -- from sleep or auto-timeout -- it takes a few seconds before the battery meter updates itself. Maybe that's the reason why in post #2 it looks as if there's not change at all?
In any case, I can live with dropping 17% over 12 hours, esp since wifi reconnects within seconds. The more I use the g-tab the more I'm amazed how well-built it is as a piece of hardware, and how much it was weight down by the stock TnT... Thanks to roebeet/rothnic/bekriebel et al for making this useable (and fun!).
I do not think the CPU runs on a lower clock when the screen is off, that is why SetCPU has the option have a profile to lower the clock with the screen off.
If we can get SetCPU to work correctly, this thing would hardly use any battery if set to minimum clock speeds.
I've noticed that every time the phone enters power safe mode, there is a problem after that.
Next morning after the phone is charged, ALL settings regarding power safe mode are still in effect (wireless is disabled, brightness is at the lowest, etc)
In my opinion, once the phone is fully charged , those power safe settings should be reverted to their original state, BEFORE they were activated.
Because they do NOT revert, and you have to manually put them back the way you want (and how they were before power safe is activated) is a poor design.
Is there a solution to this problem, so they automatically revert once power safe is deactivated?
So I noticed when I went to go use one of my apps that uses GPS the other day it said the phone had to come out of power saving mode to turn on the GPS, so I did that. Now I can't seem to find where to enable and disable Power Saving. I am not talking about the Extreme Power Saving feature that we don't have yet, just the normal power saving feature.
Can we toggle it without being rooted?
xceebeex said:
So I noticed when I went to go use one of my apps that uses GPS the other day it said the phone had to come out of power saving mode to turn on the GPS, so I did that. Now I can't seem to find where to enable and disable Power Saving. I am not talking about the Extreme Power Saving feature that we don't have yet, just the normal power saving feature.
Can we toggle it without being rooted?
Click to expand...
Click to collapse
What you saw was not the same power saving mode. It is a power saving feature built into our phones for GPS. Go to Google Settings, Location, and where it says Mode, that is where the change is. I currently have mine at battery saving unless I need step by step directions.
Did you have the power save tweak and then took the OTA? If so, it's still running but you can't access it until you do the tweak again.
Had the same thing.
Sent from my HTC6525LVW
I have power save mode powered on at 20%. It works, but now i recharged my phone back too 100% and is seems that the power save mode is still on.
All the things that will stop working (ringer, brightness) are still deactivated at 100%. Even with power save mode OFF it wont go back.
Is this a issue or am i doing something wrong?
I have Galaxy S2 Classic (SM-R732) with software version R732XXU2CPC5. Is there a way to automatically enable Power Saving Mode when battery power gets below a certain percentage like I can with my S6? I have noticed a prompt to enable power saving when the battery gets to 15%, but if miss the prompt and I don't hit the checkmark, it stays on normal power and dies.
Also, do Samsung reps monitor this forum? If there is no way to do it automatically, can this feature be added in a future update?
There is no way, but you can always do it manually through holding the home button and then scrolling through the menu