Database Info

[Q] Is this okay for me to do?

First off:
Rom:
Virus rom RC1B3
Kernel:
1.8ghz bolted BFS uv kernel
if you overclock, your battery life is less. more power = more usage
so, in theory, if you underclock, less power = less usage..
when I'm at work, I barely use my phone. Maybe to text or a call here and there..
So I wanted to improve my battery life as much as I could,,, I have SetCPU and I have the minimum at 350mhz and the maximum at 650 using the smartass governor when not in use.. Since this is underclocking, the battery life has improved drastically,, though is it safe? I don't see any reason why not, just though I'd like some input on it.

Yeah, you're fine. With the Smart-Ass governor you don't really need to underclock. It's called smart-ass for a reason. It will only use as much is needed. So when your phones screen is off not running any tasks, the governor will underclock itself.

Another thing to add is if you are using SetCPU, then you really do not need to set up any profiles that would underclock the phone if you are using smartass.

[Q] My device keeps powering off when the I put the screen to sleep.

For some reason since this morning after a full night of charging everytime my screen goes to sleep or I pus the power button to put the screen to sleep the device completely powers off. Last night I did flash infusion to oc/uv but had several issues and just kept the the device clocked at 12k and did slight uv. Im using setcpu and have a profile setup for screen off but I disabled in hopes to remedy the total poweroff. Any suggestions? How can infusion be removed?

supadupadoug said:
For some reason since this morning after a full night of charging everytime my screen goes to sleep or I pus the power button to put the screen to sleep the device completely powers off. Last night I did flash infusion to oc/uv but had several issues and just kept the the device clocked at 12k and did slight uv. Im using setcpu and have a profile setup for screen off but I disabled in hopes to remedy the total poweroff. Any suggestions? How can infusion be removed?
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Flash community kernel your getting sod or try removing your Oc UV settings
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

Ok thanks. What is sod by the way???

supadupadoug said:
Ok thanks. What is sod by the way???
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Sleep of death
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

oh lol im learning slowly but fa showly.

supadupadoug said:
oh lol im learning slowly but fa showly.
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All good
Infusion kernel is great kernel but your settings are going to be trial an error play around with.UV that's usually the probably with sod
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

Question about uv. is less best ie -25? and what does disabling the various clock speeds do?

Try using setcpu to throttle your frequencies. If you're having sod that usually means your phone isn't getting the required voltage for your CPU and you're choking your phone.. See if you can set it at 1200mhz and 800mhz on performance mode and see where that leads you.

Thanks I will give that a try. to oc really isn't my goal just to improve battery life. Right now seems to be working ok @12k with frequency uv @75-50

jdbeitz said:
Try using setcpu to throttle your frequencies. If you're having sod that usually means your phone isn't getting the required voltage for your CPU and you're choking your phone.. See if you can set it at 1200mhz and 800mhz on performance mode and see where that leads you.
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SoD actually usually happens at lower frequencies - after all the phone tends to stay down there when the screen is off.
Typically SoD results from too much UV from 100-400. I never was able to go more than -50 mV undervolt, others hit -100.
netarchy's Gingerbread OC config is a bit different, instead of setting modifiers from stock you set absolute voltages. (No binaries have been released of his kernel until more testing is done - but the source is out there!)

You guys are great everyday i just read and read and im amazed by the information and knowledge passed on. I learn something new every few pages. As for my oc/uv prob i've stuck to minimal uv with no oc and screen off profile and everything is working aok i did switch to the b version of infusion so so far so good. Ive read 28 pages today on the new infusion v2b2 for gb and that will be my next conquest. To all thanks a bunch and continue to the good work and especially helping out the new guys like me. And believe it or not im an electrical engineer lol. Again thanks and much appreciation

supadupadoug said:
You guys are great everyday i just read and read and im amazed by the information and knowledge passed on. I learn something new every few pages. As for my oc/uv prob i've stuck to minimal uv with no oc and screen off profile and everything is working aok i did switch to the b version of infusion so so far so good. Ive read 28 pages today on the new infusion v2b2 for gb and that will be my next conquest. To all thanks a bunch and continue to the good work and especially helping out the new guys like me. And believe it or not im an electrical engineer lol. Again thanks and much appreciation
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No prob. Buddy glad to have ya
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

Entropy512 said:
SoD actually usually happens at lower frequencies - after all the phone tends to stay down there when the screen is off.
Typically SoD results from too much UV from 100-400. I never was able to go more than -50 mV undervolt, others hit -100.
netarchy's Gingerbread OC config is a bit different, instead of setting modifiers from stock you set absolute voltages. (No binaries have been released of his kernel until more testing is done - but the source is out there!)
Click to expand...
Click to collapse
sounds a bit like unhelpfuls kernel from the eclair captivate days. he had absolute voltage values and other freatures. will the gpu clock be configurable? that would be awesome. under clocking the gpu and agressive uv and ucing the cpu could add hours to the battery life. with 2.3.3 you could set the phone to 800mhz and the gpu to 182 or 166mhz could probably give little negative performance in every day use with exceptional battery life.
to the op:
sod can be a problem especially if you overclock. it seems the cpu doesnt like rapid voltage changes. i can uv -200 acriss the board if i dont overclock. if i do im at -150. the 200mhz clock is almost never used but i find if i disable it im more prone to sod presumably because the voltage and frequency jump to 400mhz is too great. it can help if the 100mhz-200mhz clocks have less uv than 400. if you loose stability on 1200 at -100 then maybe set all clocks to -75 cept 100-200mhz which you may set to -50.
this isnt a rule though. you might be able to uv 400-1000 settings quite a bit more than the 1200 setting just if you have sleep of death you generally dont want agressive settings on the 100-200mhz.

Dani897 said:
sounds a bit like unhelpfuls kernel from the eclair captivate days. he had absolute voltage values and other freatures. will the gpu clock be configurable? that would be awesome. under clocking the gpu and agressive uv and ucing the cpu could add hours to the battery life. with 2.3.3 you could set the phone to 800mhz and the gpu to 182 or 166mhz could probably give little negative performance in every day use with exceptional battery life.
to the op:
sod can be a problem especially if you overclock. it seems the cpu doesnt like rapid voltage changes. i can uv -200 acriss the board if i dont overclock. if i do im at -150. the 200mhz clock is almost never used but i find if i disable it im more prone to sod presumably because the voltage and frequency jump to 400mhz is too great. it can help if the 100mhz-200mhz clocks have less uv than 400. if you loose stability on 1200 at -100 then maybe set all clocks to -75 cept 100-200mhz which you may set to -50.
this isnt a rule though. you might be able to uv 400-1000 settings quite a bit more than the 1200 setting just if you have sleep of death you generally dont want agressive settings on the 100-200mhz.
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Not a clue - I only know what netarchy has done, not what he plans on doing.
The architecture of voltage/CPU frequency control is significantly different in GB kernels than Froyo. In general it's cleaner, so a lot of the issues with rapid frequency changes might go away in GB. For example, there's some code in the base kernel that's supposed to facilitate rapid voltage changes (not exactly sure how... the only documentation people outside of Samsung have for the MAX8998 is kernel source code.)

Well guys I have some news. I continued use with set cpu no oc just uv on freq above 624 @ -75 and I kept my screen off profile set to 644 max powersave scaling, and my battery life has been outstanding i check emails frequently been texting all morning and playing wwf and im @ 70% after 4 hrs of use. I know I read % doesn't mean much compared to some volts ratio but I think this is worth mentioning. And for my purposes the goal has been achieved in extending battery life and still having exceptional performance.

Oh and I wanted to add that my phone recharges much faster especially with the screen off with these setting. Maybe nothing new to you but def a plus for a(us) neewb's reading.

Request Overclocked Kernal that is also Undervolted

I know overclocking is all the rage for more performance. I myself would prefer the gains of overclocking (probably wouldn't be 1.7 ghz atm since that is the performance based kernal, but 1.5 ghz might be doable) with a combination of undervolting for longer battery life.
I know when I was considering a viewsonic gtablet, that most of the kernals that overclocked also undervolted at the same time (how much depended on the kernal and how much of an overclock too).
Advantages to overclocking are pretty obvious, more performance. Undervolting makes the processor (this case SOI) run off of less power, thus more battery life (can be significant if undervolted enough) and less heat, which translates into a tablet that potential has a longer life (heat overtime wears away at life of SOI/processors and sometimes other components), plus much lower risk than overclocking. I undervolt all my laptops, I mostly get my laptop with 3 hour battery life to 3 hr 30min or even 3 hr 45 min on a moderate undervolt. A little undervolting could take this tablet from 8-9 hours to possible 11-12 hours of battery life (plus a little overclock included will add some performance too).
Do any of the present kernals out there try this? If not, I would like to make a request for such a kernal.

Undervolting might cause the TP to be unstable and crash.
Sent from my MB860 using XDA App

neer2005 said:
Undervolting might cause the TP to be unstable and crash.
Sent from my MB860 using XDA App
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it would need to be done in small increments just like overclocking. Same methods are used undervolting as you would overclock. Yes they could both cause instability, if you double the clock speed or cut the voltage in half, it takes time to know the limit of the SOI by using small increments.

You will need to your favorite custom kernel and adjust the volts yourself using Govnah.

But then I also was reading on forums on webosbuzz and you can have screen wake issues to with undervolting

Metalshadowx2 said:
But then I also was reading on forums on webosbuzz and you can have screen wake issues to with undervolting
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Really? If that is true, I wonder how undervolting would cause that.

The webos-internals-testing kernels include initial experiments with undervolting.

Best kernel for battery life for osprey?

Hai I'm wondering what's the best kernel for battery life is and if they're about the same which would be the best one

ninja85a said:
Hai I'm wondering what's the best kernel for battery life is and if they're about the same which would be the best one
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There is no "best" kernel as each one will behave differently depending on your usage. Battery life is about trading performance for longer usage... If you don't like to tweak the kernel, leave it stock... the stock kernel and ROM are quite well optimized. Other wise if you don't mind tweaking, try any kernel, maybe start with Squid, and a conservative governor (like lionfish, conservative, or powersave), set the CPU minimum to 200Mhz, and the CPU Max Frequency 1094Mhz, even take a core or two off line if you want to get real crazy. Remember that to make a significant difference in battery you need to make a noticeable change in performance.

acejavelin said:
There is no "best" kernel as each one will behave differently depending on your usage. Battery life is about trading performance for longer usage... If you don't like to tweak the kernel, leave it stock... the stock kernel and ROM are quite well optimized. Other wise if you don't mind tweaking, try any kernel, maybe start with Squid, and a conservative governor (like lionfish, conservative, or powersave), set the CPU minimum to 200Mhz, and the CPU Max Frequency 1094Mhz, even take a core or two off line if you want to get real crazy. Remember that to make a significant difference in battery you need to make a noticeable change in performance.
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Ah cheers

Underclocked Kernel for our phones?

Wondering if someone know any kernel that has energy "savings" parameters such as underclocking cpu(phone is quite fast itself and to be honest as a daily driver some users rarely use more than 30% of it's actual power), energy saving profil, underclocking gpu
Surely you can underclock stuff for yourself and after a restart an app to force those lower clocks but why not having a kernel that has all these so you'll have better battery life and be done with tweaking?
What are your thoughts people?