Develop Bugs

Kernels don't seem to do anything.

Ever since i flashed francos kernel for the first time i failed to see any difference whatsoever in batterylife or performance. 4 versions of franco kernel later and still no change. Even bought his app and tried undervolting. I accidentaly uv'd by 100 in the 700 category and none of the side effects were happening so i tried undervolting all by 200 and even setting on boot. Nothing happened. I then flashed jame bond kernel and nothing happened. When i tried flashing glados kernel it just froze on boot. I experimented with all of them for at least a day and except glados which didn't work they all showed no difference than stock regarding battery life or performance. What could be the cause of this?
Sent from my Galaxy Nexus using Tapatalk

Kernels don't have the profound effect you might think on this phone. Not nearly as much as devices I have had in the past.

I'm aware of that, but still. No difference whatsoever? Even when i intentionally try and break it by undervolting by 200?
Sent from my Galaxy Nexus using Tapatalk

What did you undervolt by 200? Some speed steps can get away with that.

What ROM are you using?
Sent from my Galaxy Nexus using xda premium

adrynalyne said:
Kernels don't have the profound effect you might think on this phone. Not nearly as much as devices I have had in the past.
Click to expand...
Click to collapse
Adrynalyne! Its good to see you here!
Yeah, on the Fascinate, Kernels had much more of a profound effect. I can't say the same for this phone. But the OP said that he purposely tried to Bork his phone to see if it worked and it didn't even touch it. That's really strange. I can purposely try to Bork mine and do a pretty damn good job of it.
Sent from my Galaxy Nexus using xda premium

Some kernels had broken UV interfaces that wouldn't undervolt the kernel and would allow you to undervolt by absurd amounts. (though it wasn't actually doing anything)

joshnichols189 said:
Some kernels had broken UV interfaces that wouldn't undervolt the kernel and would allow you to undervolt by absurd amounts. (though it wasn't actually doing anything)
Click to expand...
Click to collapse
Well, are all the most popular kernels broken? Franco, glados, jame bond? I'm more inclined to think the problem is localized (either me or my phone).
And i'm running aokp 20, btw. Had 19 and milestone2 before those, which were all installed after full wipes (before anyone suggests that).
Sent from my Galaxy Nexus using Tapatalk

Your not the only one with this problem as I too have seen no change in battery performance on my gnex. I'm also using aokp 20 and Franco's (14.4). What I don't get however is that my buddy seems to see significant improvement in his phone while running the same rom/kernel combo

I've had some friends do some tests for me and run stock kernels for a while.
The differences in performance and battery life were menial between custom and stock.

What about all those people that claim seeing improved battery life? Not to mention those impresive screenshots of battery stats that show numbers i have yet to even come close to.
Sent from my Galaxy Nexus using Tapatalk

Many of those screenshots are sleep time.
Also, never underestimate the power of placebo.

adrynalyne said:
Many of those screenshots are sleep time.
Click to expand...
Click to collapse
naturally. also, data calls are a huge battery drainer, even with excellent reception, when actually using the phone. the same with wifi.
to give the op an example, this last night i forgot wifi on. connected to my home network. the phone slept well (something woke it up in the middle but for a very short period of time, probably gmail), and i only lost 3%. i normally loose 1% in 7hrs approx., so it wasnt so bad.
on the other hand, if screenOn is true, it will obviously drain faster..

adrynalyne said:
Many of those screenshots are sleep time.
Also, never underestimate the power of placebo.
Click to expand...
Click to collapse
+1 on that.
Btw adryn, what kernel/rom do you use in your gnex?
Sent from my Galaxy Nexus using xda premium

Tried a lot of combinations, but at the time of writing the original post i had been using aokp 20 with franco 14.4 for a while. I am currently trying aokp20 with trinity 384mhz gpu.
Also i lost about 2%/hour with franco in standby. I had mobile data connected and autosync only for google account + yahoo mail, all set to sync each hour.
Waiting on trinity now. Curious if i notice any difference besides the lack of franco's blueish tint.
Sent from my Galaxy Nexus using Tapatalk

adrynalyne said:
Many of those screenshots are sleep time.
Also, never underestimate the power of placebo.
Click to expand...
Click to collapse
This.
However, the GPU overclock is noticeable on games like Shadow and GTA.

yondercomesthetrain said:
+1 on that.
Btw adryn, what kernel/rom do you use in your gnex?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
My own or stock. I experiment a lot. Currently I am running a custom with a tweaked deadline scheduler, and a slightly different oc method for gpu and cpu than everyone is using to 1.35ghz. Stock voltages, tweaked ramdisk for filesystem mounts. Stock sleep profile of 350/700 on Interactive. Not using Setcpu to overclock at all. I set the power profile in fw-res to include the extra speed step.
So far so good, but its too early to tell. I went to bed and work up 9 hours off battery with 99% remaining. So its definitely deep sleeping fine I won't know for a couple days on whether it sucks battery dry or not.

ericc191 said:
This.
However, the GPU overclock is noticeable on games like Shadow and GTA.
Click to expand...
Click to collapse
I don't play a lot of games but 307mhz to 384, nets me 3fps in Nenamark2. Not exactly mind blowing.

adrynalyne said:
Many of those screenshots are sleep time.
Also, never underestimate the power of placebo.
Click to expand...
Click to collapse
exactly. I used to go crazy doing this and that, disabling this and that to try to get 20+ hours that people were getting on stock battery. Then I came to realize that the screenshots are probably mostly sleep time. Me being a very social person (text, IM, Facebook, and Tweet a lot) there is no way I was ever gonna get anywhere near 20 hours on stock. So I bought a couple of spare batteries, turned stuff back on, turn the screen back on brightly and enjoyed the phone and its great screen without worrying about battery life
Sent from my Galaxy Nexus using Tapatalk

Ill be as honest as I can. I just had two nexus and installed two different roms and and two different kernels....I believe they don't do anything as well..And I thinks its placebo effect when people are saying there battery's are better or the screen is smoother....I see not much of a difference even in stock...yes the benchmark may go up but that's means nothing really....
Sent from my Galaxy Nexus using XDA App

[Q] Worse battery life after installing DoomKernal

I'm using FPSE playing FF7 as the test.
Before installing DoomKernal I was getting a drain of about %13 per hour.
After Installing DoomKernal I am getting a 24% battery drain per hour.
I thought DoomKernel was supposed to help battery life. I even cleaned up the running processes. So they don't drain the battery in the background.
I have installing SetCpu but I haven't overclocked, I only used it to set the minimum speed lower.
I have JuiceDefender set to disable connectivity when using FPSE.
Am I doing something wrong?

try fully charging then turn off phone continue charging then boot recovery and press wipe battery stats.
Sent from my R800i using Tapatalk

Not sure which kernal your using with 10 i get nearly as good as stock, so close i leave it, where in the past ive tried them and always gone back to stock
If its V11 i think from memory the GPU is overclocked and in his thread he does state that the effect of this on battery is unkown.
When i say as good as stock i mean at comparable set speeds.

using v11 now, no significant difference than previous one...

I use DoomKernel v10 and battery life is excellent. I use different governers based on what I am doing.
Like smartass and underclocked to 400Megs during night and 1G or 1.2G during and gaming with OnDemand.
--
Maddy

Tried DoomKernel v10. Went back to Advanced Stock to emulate the original conditions. No significant difference here between both kernels.

Well I don't know why then. I used the latest one available at the time.
When I tried it, I wasn't overclocking or anything. Left things as is.
I'm now using Cyanogenmod 7 with it's kernel, and I'm getting same/slightly better battery life than stock. But when I was on DoomKernel, battery life just sucked.

Masters2150 said:
Well I don't know why then. I used the latest one available at the time.
When I tried it, I wasn't overclocking or anything. Left things as is.
I'm now using Cyanogenmod 7 with it's kernel, and I'm getting same/slightly better battery life than stock. But when I was on DoomKernel, battery life just sucked.
Click to expand...
Click to collapse
I'm really sorry for it, Masters... I guess there are too many variables to understand. Maybe it's a slightly different phone, maybe our modus operandi is different (i proably drain more battery than you, based on your posts).
Anyway, I hope you can find a solution, or maybe in newer versions it will be better. For now, sorry I can't help.

[Q] Battery drain - rooted, but on standard ROM

Hi all,
I've got a slightly strange one here which I wasn't expecting.
My Arc S was on .6, downgraded to .4, rooted, then upgraded to .6 with root still on. So I'm on a stock ROM, and have even removed a ton of unnecessary apps - otherwise, everything is as it should be.
However, where I previously got 2 days out of my Arc S, I'm now getting only about one. As before, I have background data, Wifi, Bluetooth and virtually everything else permanently turned off.
As I'm on a stock rom, and the same one that I was on before I rooted, is this normal and/or expected?
Thanks in advance,
schnide

Download a boot editor, or check the KERNEL, if you are using the stock kernel is normally. Idk how you can stay 2 days with an arc, without charging. Check the brightness.

Heck, im suprised how anyone can keep the battery last even for a day. If i fully charge the arc s, unplug it and then just leaves it there, the longest i can get is ~10hours.
I heard that arc/s battery will get better over time, maybe thats why, coz i only got mine like 4 months ago...
Sent from my LT18i using xda premium

You can save power using apps like "green power" and cie but I'm impressed by the autonomy of your arc. Mine survives 1 day and two hours when I don't use it. You also can reset the battery stats on recovery but it's an extreme solution...

It's known issue, worse battery performance is because of .6x version

Velcis Ribeiro said:
Download a boot editor, or check the KERNEL, if you are using the stock kernel is normally. Idk how you can stay 2 days with an arc, without charging. Check the brightness.
Click to expand...
Click to collapse
I conditioned my battery when I first bought the phone. Conflicting reports say this doesn't do anything with modern batteries, but I've always done it and had better battery life than some.

maliceomalice said:
Heck, im suprised how anyone can keep the battery last even for a day. If i fully charge the arc s, unplug it and then just leaves it there, the longest i can get is ~10hours.
I heard that arc/s battery will get better over time, maybe thats why, coz i only got mine like 4 months ago...
Sent from my LT18i using xda premium
Click to expand...
Click to collapse
Two days and 20 hours is my record
(uptime)
From my sexy LT15i

+1 I did manage to push it around the same with a few two minute calls bit of browsing and some xda posting
Sent from my LT18i using Tapatalk

Install supercharger, use a task killer to determinate what apps are running on the background and kill the unnecessary ones frequently. I'd suggest you to install another kernel and arconium if you have unlocked bootloader
Sent from my LT18i using Tapatalk

2days O.O
Do you people even use your phones ?
1day of usafe ~Moderate is normal
20/30min calls
Edge- Always on
Brightness-Medium - indorrs Full-Outdors
Wifi - off

I,m now almost 2 day,s with 15% left
6 hours displaytime
30 min calls
wifi almost on
brightness 30%
Arc s stock .62
undervolt -100 Mv
stockspeed 134-1400 Mhz smartassv2/bfq
v19.2 kernel
removed a lot off crapp.
With 3g the battery time is worser,but still good.

jejeh said:
I,m now almost 2 day,s with 15% left
6 hours displaytime
30 min calls
wifi almost on
brightness 30%
Arc s stock .62
undervolt -100 Mv
stockspeed 134-1400 Mhz smartassv2/bfq
v19.2 kernel
removed a lot off crapp.
With 3g the battery time is worser,but still good.
Click to expand...
Click to collapse
What kernel u use?
Sent from my LT18i using xda premium

maliceomalice said:
What kernel u use?
Click to expand...
Click to collapse
doom v19.2 highboot.

[Q] R800x, Post your Overclock CPU speeds below....

OK, so I currently have my PLAY set to 1.2ghz. My first android phone I OCd from 600mhz to 1ghz and one day while playing a game I heard a loud pop noise, then my phone shut off and that was that... toast. So I have been extremely leary of overclocking now. I am aware there are users who have OCd their phone to 1.4+
My question is how safe is when I use No frills to OC is it ramping up the volts to get that extra power. Also according to the Snapdragon layout it lists the S2 in our phones as capable of 1-1.5ghz... does this mean I could technically go up to 1.5 and be OK? I have a large 3600mha mugen battery, so thats not an issue, but what I am afraid of is popping my phones brains out...
http://en.wikipedia.org/wiki/Snapdragon_(system_on_chip)
Look at Snapdragon S2 section
MSM8255
Also, it sayd for phones that use the above chip.. GSM only for Xperia PLAY... if that is the case does that mean R800x users are on a differerent chip? And if so what chip is it? Thanks in advance.

jgregoryj1 said:
OK, so I currently have my PLAY set to 1.2ghz. My first android phone I OCd from 600mhz to 1ghz and one day while playing a game I heard a loud pop noise, then my phone shut off and that was that... toast. So I have been extremely leary of overclocking now. I am aware there are users who have OCd their phone to 1.4+
My question is how safe is when I use No frills to OC is it ramping up the volts to get that extra power. Also according to the Snapdragon layout it lists the S2 in our phones as capable of 1-1.5ghz... does this mean I could technically go up to 1.5 and be OK? I have a large 3600mha mugen battery, so thats not an issue, but what I am afraid of is popping my phones brains out...
http://en.wikipedia.org/wiki/Snapdragon_(system_on_chip)
Look at Snapdragon S2 section
MSM8255
Also, it sayd for phones that use the above chip.. GSM only for Xperia PLAY... if that is the case does that mean R800x users are on a differerent chip? And if so what chip is it? Thanks in advance.
Click to expand...
Click to collapse
We're on the MSM8655 instead of the 8225. iirc, the difference is that it's cdma oriented as opposed to gsm
Each chip is different in what it can handle, so your best bet is to test it out, slowly. When your system starts to act funky, step down the voltage/speed levels.
Pax
Ps. Tried running mine @ 2 ghz once and was promptly rewarded with a random reboot. It takes some time, but with mine I've figured out our can run 1.6 with no issues (I tend to keep it at to stock levels because my battery sucks )
Sent from my R800x using Tapatalk 2

paxChristos said:
We're on the MSM8655 instead of the 8225. iirc, the difference is that it's cdma oriented as opposed to gsm
Each chip is different in what it can handle, so your best bet is to test it out, slowly. When your system starts to act funky, step down the voltage/speed levels.
Pax
Ps. Tried running mine @ 2 ghz once and was promptly rewarded with a random reboot. It takes some time, but with mine I've figured out our can run 1.6 with no issues (I tend to keep it at to stock levels because my battery sucks )
Sent from my R800x using Tapatalk 2
Click to expand...
Click to collapse
K, thank you Pax for the feedback.

Just thought I would open this to everyone on R800x, interested if people could point there OC status below.
Mine is still on 1.2ghz. with Performance and BFQ

Highest I can go is 1.6, but I keep it around stock or slightly underclocked, with SetCPU profiles that increase to 1.2 for games and internet apps. smartassv2 and sio for governor and scheduler.

I heard that underclocking can end up reducing battery life over time. Is there truth to this or is it just a myth?

1.6Ghz and Performance when the screen is on.
Stock when the screen is off.
Battery last all day, but I don't use heavily.
Sent from my R800x using xda app-developers app

Solar.Plexus said:
I heard that underclocking can end up reducing battery life over time. Is there truth to this or is it just a myth?
Click to expand...
Click to collapse
There's a large number of things that can adversely affect battery life, but by the time it becomes a problem, you'd most likely be on a new phone, anyway.
Sent from my SCH-I500

I tried my r800x at 1.6ghz (running Cyanogenmod 9 with stock kernal), and I was stuck in a boot loop that I had to fix through CWM Recovery. I am now running stable at 1.4ghz.

Yeah I'm on my 2nd xplay after I tried to oc to 1.6. My phone got extremely hot so I pulled the battery to let it cool. Upon booting my touch screen was non responsive. I don't ever go past 1.4 now.
Sent from my Xperia Play

Umm I got a r800x and the Max I can clock too is 1GHz but I see people up to 1.6 how do you do that?
Sent from my GBTweaked R800x using tapatalk 2

crazymonkey05 said:
Umm I got a r800x and the Max I can clock too is 1GHz but I see people up to 1.6 how do you do that?
Sent from my GBTweaked R800x using tapatalk 2
Click to expand...
Click to collapse
Custom kernel such as LuPuS or DooMKerneL

1.6 min and max. SIO, with performance governor, then I switch it after 30% and lower to powersave sio, 804-416 Max or whatever those numbers are.
Sent from my R800x using xda app-developers app

savage24x said:
1.6 min and max. SIO, with performance governor, then I switch it after 30% and lower to powersave sio, 804-416 Max or whatever those numbers are.
Sent from my R800x using xda app-developers app
Click to expand...
Click to collapse
Good luck with avoiding frying your phone

R800a 1.4 GHz, sio, ondemand, with Lupus GB v5 + Xperia NXT

My play can stable oc to 1.8ghz
Sprint Samsung Galaxy S II Epic 4G Touch w/ Stock 4.0.4
Xperia Play R800X w/ supercharged stock 2.3.3 and doomkernel

Running the LuPuSv7 Kernel on AOKP Milestone 6.
Max CPU: 1612MHz
Min CPU: 249MHz
Scaling Governor: Superbad
~Set to Boot~
Runs SUPER smooth!
Battery performance; half of the day under heavy use/gaming, up to 2.5 days when I'm only calling and texting.

Undervolting Damage?

Can undervolting, in any way, make ure phone heat up more or loose more battery?
/==(CyberScopes)==\

I undervolted 50mV and my phone is still okay

Wats the best undervolting level?
/==(CyberScopes)==\

I don't think it will damege the hardware, but the software may not boot due to the CPU not having enough energy to process all the bits of data there for having to restore a nandroid or ftf. But I don't know about a safe voltege as I am on a stock kernel and locked bootloader
Sent from my GBTweaked v7.1 r800x using Tapatalk 2

Doomlord said -100mv is stable for him. But I not dare so I go till -50mV

If i try undervolting, my battery life goes to hell.
Its different from phone to phone.
Sent from my R800i using xda app-developers app

Ive got -100mv and i cant tell if its givin more or less batt.
/==(CyberScopes)==\

Undervolting will never harm the phone, though it may prevent it from booting (if the undervolt is set on boot), or make the phone sporadically freeze/reboot. Some frequencies can undervolt more than others, and each phone's tolerance will vary as well. I've been able to go down -225mV on the 1024MHz frequency (or even -250mV on 1017MHz), though that's the farthest any of them has gone.

Yeah I've heard of overclocking causing damage, but never undervolting. It may cause some issues, but actual damage? I don't think so.

-Undervolting should GAIN BATTERY.
-Going too low might make your device freeze or not boot.
-Because of the way that you are actually taking away the energy this actually makes the phone slightly cooler.
- I myself don't like messing up with the voltages, there shouldn't be a very huge battery difference (Only about 1-6%) and I prefer stability.
-If you are still thinking of doing so then use a CPU stress app and test on every single step that you go down by for at least 20 minutes.
Sent from my R800i using xda app-developers app

Anybody know any good undervoltages for 1.6ghz overclock? I need to overclock this high to get my games going.

chery2k said:
Anybody know any good undervoltages for 1.6ghz overclock? I need to overclock this high to get my games going.
Click to expand...
Click to collapse
I'm able to set 1.6GHz to 1200mV stable, but it varies from phone to phone. (1200mV is the same as stock 1GHz voltage btw )

is undervolting really necessary?

CyberScopes said:
is undervolting really necessary?
Click to expand...
Click to collapse
No as I earlier explained it only saves about 5% battery and heat.
Sent from my Xperia Play using xda app-developers app

sewer56lol said:
-Undervolting should GAIN BATTERY.
Click to expand...
Click to collapse
That's what you want it to do, and that is the usual result of moderate undervolting, but that is not always the result.
The phone checks itself (similar to parity checks). Excessive undervolt can make the phone cpu do the same thing over and over until it comes out right

electricpete1 said:
That's what you want it to do, and that is the usual result of moderate undervolting, but that is not always the result.
The phone checks itself (similar to parity checks). Excessive undervolt can make the phone cpu do the same thing over and over until it comes out right
Click to expand...
Click to collapse
undervolted -100 my HTC desire HD. Phone got rather hot.
Switched back immediatelly...
Why's that?

Odp: Undervolting Damage?
cimdahers said:
undervolted -100 my HTC desire HD. Phone got rather hot.
Switched back immediatelly...
Why's that?
Click to expand...
Click to collapse
It could have happened because your phone has gone to the highest possible frequency, I'm not sure about it though.
How do I change the voltage in android without having to edit the kernel?
Wysłane z mojego R800i za pomocą xda premium

I agree that the safest level of undervolting is -50 or even -75 but anything beyond -100 would make the device restart when it hits the min clock speed.

Can somebody give me tutorial how to undervolting custom kernel? When using/try doomkernel n lupus still can't see a chance to uv. N i don't want to use setxperia.
Sent from my R800a using Tapatalk 2