Hey everyone - just a little thing I'm curious about.
How come the choice of launcher changes my battery life in standby?
I've been using different kernels and roms lately. Mostly CM7 variants (nscollab etc) and trinity or netarchy kernels.
And no matter where I am and what I use: flashing UD launcher almost halves my battery drainage in standby. Which is why I use it: The point is I don't understand how that can be because I would like to use other launchers. I really enjoy the extra comfort adw and go launcher offer and the stock launcher is still the smoothest of all.
So what are they doing in standby that's draining battery? When comparing them of course I always use the same widgets, the same sync settings, juice defender config etc.
Atm I'm using cm7.0.2 with UD launcher flashed on top of it and morfic's trinity UV kernel with 1.1 Ghz.
According to battery monitor widget history standby drains around 5mA averaged over 5 minutes with adw in it's cm7 variant and stock launcher. with ud launcher it's around 2-3.
you would really have to do a do a controlled study and test the different ones and dig into source code, where possible. i dont know, i've always stuck with launcher pro and never tried any other to see a battery issue.
my nexus one in deep sleep hovers at 6mA idle power draw over night during 8 hours. i'm surprised the nexus s sees 5mA as well, for some reason i thought the better CPU hardware would have dropped idle power even lower, to around 2mA or so.
the HTC inspire for example is the best i've seen on any android phone so far. it can hit 2mA idle and stay there.
i do an 8 hour battery test every night while i sleep, and check the logs when i wake up. i'm weird.
I am running Faux-AOSP-1.3.1 with the Trinity kernel 2.6.32.45 overclocked to MHz. I turned auto brightness off. I have profiles setup in setcpu for calls, screen off, charging, battery temp, and battery level all set to 1000MHz. I have a crap ton of apps installed and no live wallpaper. Yesterday I used my phone to make phone calls, text, emails, xda, download some apps, picture messaging, and Facebook. I woke up this morning and I had almost 20 hours on that charge. I think that is excellent battery life for a 2.3.5 ROM that is not Miui. I know Miui gets awesome battery life because I have used that before but I could not believe that I got this kind of battery life out of this ROM overclocked so much. The quadrant scores are between 4500-4900. I have yet to have a screen of death, reboot, or freeze on this ROM and I have been using it for the past 4 days. I just thought that I would share this with everyone.
tidewaterns said:
I am running Faux-AOSP-1.3.1 with the Trinity kernel 2.6.32.45 overclocked to...
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I've always experienced outstanding battery life on Faux's AOSP 1.3.1 (he mentions there's a 1.3.2 in another post but i've been unsuccessful in tracking it down). I don't get those screaming quadrant scores you get but Faux's AOSP is a battery sipper!
EB 2.3.3 version 1.0.7
I got over 18 hours of battery life with charge, moderate use, and didn't have to do anything other than flash ROM.
Its about the only thing that sucks about CM7 based ROMS, battery life just terrible and a bunch of modifications are needed just to extend battery life.
Stock 2.3.3 based ROMS aren't so bad, except that Netflix don't work, Lock Screen doesn't have music widgets, and music player widget sucks.
I generally get around 20 hours with faux, too bad his kernel wont work in the new nightly yet
Hi i am having battery drain problems. My battery was working fine before like 10hours or more then all of a sudden it last like 7 hours on a full charge. After 5 hours its already in the 30's. I have ARHD 3.6.4 installed & faux123 0.2.3r_2 kernal. I installed faux clock to control the voltages. so right now its not undervolted because my phone cant handle it but my frequencies are at 1.08ghz max clock. I would like to know if i need to calibrate my battery or what do i check? I would appreciate the help Thanks.
You need to get an app to monitor your standby current. The one made by 3c is pretty popular.
Next, you need to see what it idles at. It should be low...Less than 100mA/Hr. (I see around 30mA/Hr or less).
If its high, then something is using it. Check that data. sync, wifi, and GPS are not on when not in use.
Matt
design12 said:
Hi i am having battery drain problems. My battery was working fine before like 10hours or more then all of a sudden it last like 7 hours on a full charge. After 5 hours its already in the 30's. I have ARHD 3.6.4 installed & faux123 0.2.3r_2 kernal. I installed faux clock to control the voltages. so right now its not undervolted because my phone cant handle it but my frequencies are at 1.08ghz max clock. I would like to know if i need to calibrate my battery or what do i check? I would appreciate the help Thanks.
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This may help you......
http://forum.xda-developers.com/showpost.php?p=18929578&postcount=27962........ a new faux kernal released to combat this battery drain.
design12 said:
Hi i am having battery drain problems. My battery was working fine before like 10hours or more then all of a sudden it last like 7 hours on a full charge. After 5 hours its already in the 30's. I have ARHD 3.6.4 installed & faux123 0.2.3r_2 kernal. I installed faux clock to control the voltages. so right now its not undervolted because my phone cant handle it but my frequencies are at 1.08ghz max clock. I would like to know if i need to calibrate my battery or what do i check? I would appreciate the help Thanks.
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Hi,
Faux has released a new version to deal with the bad battery drain.
Check HERE
Hi, first to defend myself, I did search and found that everybody says good things for every kernel. So every kernel is best for Stock ICS?
I got confused. Yes I'am total noob and recently learned how to root and flash custom rom's.
I just want to hear your opinion for best kernel running on Stock ICS.
I need kernel that is good for the battery but also snappy for the system. I don't play games and I use my phone for calls, reading news, working on excel files, google maps, mail and taking pictures.
My phone is Nexus S GT-I9020T on Wind network.
IMO ezekeel kernels
Has lats of featured including voodoo color
http://forum.xda-developers.com/showthread.php?p=20520270
Sent from my Nexus S using xda premium
Thank you. Is this kernel stable?
Im just trying to set it up as we speak, will let you know how stable it appears once I figure it out
Stuck on trying to flash an unsecure boot image at the moment.
*shrugs* The stock kernel?
Unless you want the functions third party kernels bring to the table, I don't see a good enough reason to swap the stock kernel for another.
That's what I was thinking. With Glados kernel I had problems with restarting after the screen turns of, also with Matr1x kernel. Also I read that there are restarting issues with IMO ezekeel kernels. Yes I know that probably the most stable it's the stock kernel, but there is problem with battery, I had more juice with GB and CMD 7. That's why Google paused ICS update on Nexus. But probably I will stick with Stock Kernel because for me it's better to have less battery for now instead random restarts. I hate when my phone it's not in perfect state.
Just managed to get ezekeels CFS on there and I get the reboot bug after going to standby.
Looking for updates but the thread is huge. Yet to try BFS.
darko.baruh said:
That's what I was thinking. With Glados kernel I had problems with restarting after the screen turns of, also with Matr1x kernel. Also I read that there are restarting issues with IMO ezekeel kernels. Yes I know that probably the most stable it's the stock kernel, but there is problem with battery, I had more juice with GB and CMD 7. That's why Google paused ICS update on Nexus. But probably I will stick with Stock Kernel because for me it's better to have less battery for now instead random restarts. I hate when my phone it's not in perfect state.
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You can try and turn off deep idle for your reboots.
Solves the problem 99% of the time (totally made up stat that could actually be true)
But actualy that function (deep idle) it's the most impotant thing in the kernel. It gives more battery time. Other thing are just fancy. More battery and no hickups, I dont need overclocking because I dont play games.
Sent from my Nexus S using Tapatalk
darko.baruh said:
But actualy that function (deep idle) it's the most impotant thing in the kernel. It gives more battery time. Other thing are just fancy. More battery and no hickups, I dont need overclocking because I dont play games.
Sent from my Nexus S using Tapatalk
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Deep idle gives more battery time under certain conditions (screen off but not completely idle, playing music for instance). It won't really give you more battery time if your phone is actually idle with the screen off.
But according to this http://forum.xda-developers.com/showthread.php?t=1297535 I understood differently. Maybe you are right, I'am still noob to all of this.
darko.baruh said:
That's what I was thinking. With Glados kernel I had problems with restarting after the screen turns of, also with Matr1x kernel.
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Same here but not bad at least for me just one reboot since i installed yesterday when he posted. 2.1 kernel I never got any reboots
Sent from my Nexus S using xda premium
darko.baruh said:
But according to this http://forum.xda-developers.com/showthread.php?t=1297535 I understood differently. Maybe you are right, I'am still noob to all of this.
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The first post that you linked actually just confirms what I said.
Ezekeel said:
Since this is just theory and Morfic noted that his experience seems to indicate otherwise and that limiting the CPU frequency does actually decrease the battery drain, I put this theory to the test and logged the battery charge over 10h of FLAC playback in Airplane mode with the screen switched off.
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1) Playing FLAC (not idle)
2) Screen off
Pre-requisites are met.
So as I understood the battery consumption is reduced only if you listen music, because you can't do anything else when the screen is off. And the deep idle is working only in standby mode (screen off).
darko.baruh said:
So as I understood the battery consumption is reduced only if you listen music, because you can't do anything else when the screen is off. And the deep idle is working only in standby mode (screen off).
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Deep idle only shows savings if there is tasks running while the screen is off VS the same situation without deep idle.
So for someone doing commuting (like simms22 for example) and listening to music for around an hour, they'll lose less battery with deep idle than without.
You won't actually save battery if your phone is actually idle with deep idle enabled.
It's not some kind of magical function that makes your phone use less battery doing tasks with the screen on, deep idle disables certain components of the phone while executing tasks with the screen off, instead of having it "at full speed" as if the screen was on.
Now I understood. Thank you very much.
darko.baruh said:
Now I understood. Thank you very much.
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No problem. I think Deep Idle is probably the mod by Ezekeel surrounded by the most misconceptions.
Most new users want it absolutely but don't seem to know why.
On His Glados kernel I noticed that Android OS was using 20%-21% of the battery and on the stock kernel 30%-31%.
Android System was using around 14% and on the stock around 19%.
Ok, have you decided to give the Glados 2.2 another go? I believe I have finally tweaked it so that it is stable for me.
Before I was getting restarts within 30 seconds of the screen turning off. I have cornered this (on my phone at least) to a problem with NSTools auto-setting the lower frequency to 100mhz. Changing it back to 200mhz and I have yet to see the system restart itself. Im not overclocked, because I dont see the point as everything is fairly snappy with this new kernel. I dont really play games on it so Im not fussed.
I did used NSTools and the frequency was set to 200mhz and I had system restarting on screen off. Using stock ICS with Glados 2.2
Also I had green annoying flickr on locking and unlocking the screen.
Hi all,
I have been using the ONDEMAND CPU governor for quite a while on my SGS4G running CM9 (Team Acid's version, the final herring one), and I have just gotten used to the 12-14 hour battery life that I have had ever since I switched from GB back in August 2012. However, most of the frequent users here recommend the SMARTASSV2 governor, so I tried to use that yesterday to see if battery life was enhanced.
If anything it seems that my battery life got worse (see attached picture). I am a moderate phone user in general; I use my phone for texting mostly, and sometimes I'll look something up on the Internet, but no music, WiFi and GPS are always turned off, no overclocking/undervolting. I recently purchased a new battery as my old one died about two months ago.
I was wondering, is there any governor for the CM9 ROM that is particularly good with battery but doesn't completely drain performance?
(Also, I tried to use the LZ kernel before, but it seemed to cause many more problems than it fixed.)
You've got some pretty bad wakelocks going on there. See how your phone is awake even though your screen is off? That is an issue. Also how much screen on time did you have on that run? Get Better Battery Stats(free on XDA) then fully charge and look at what wakelocks are occurring. You might also want to consider UVing if you want better battery life.
Also, if you're a fan of ondemand, I highly suggest moving to ondemandX, which actually does deep sleep when the phone is off.
But that will only help if you fix the wakelocks first. So follow hechoen's advice and your phone should be way more awesome.
Downloaded BBS today, we'll see how it goes.
Sent from my SGH-T959V using xda app-developers app