Database Users

What Kernel are you guys using on the lastest CM7?

How many .35 kernels are available? I'm only aware of Umaro's and the stock CM kernel. I'm trying to achieve better battery life, so what kernel are you guys using?
So far, using Umaro's, I'm getting regular battery life, nothing special. Haven't tried the stock CM kernel.
Are they any other undervolted kernels available?

durps said:
How many .35 kernels are available? I'm only aware of Umaro's and the stock CM kernel. I'm trying to achieve better battery life, so what kernel are you guys using?
So far, using Umaro's, I'm getting regular battery life, nothing special. Haven't tried the stock CM kernel.
Are they any other undervolted kernels available?
Click to expand...
Click to collapse
There aren't any others so far. Umaro's kernel is really good for battery life, however it's not up to date with the latest kanged nightly from yesterday.

Ahh, I see. Thanks for the info.
What cpu settings are you running?

durps said:
Ahh, I see. Thanks for the info.
What cpu settings are you running?
Click to expand...
Click to collapse
Right now I'm using a kanged nightly with the "stock" cpu settings of 245MHz min and 1024MHz max, but with the interactive governor. With Umaro's kernel I had at 245 min, 1017 max and the Smartass governor. The smartass is pretty good on battery.

u made all the right moves all i would do is dim screen and keep runnimg apps low.
pimped out g2

btw pyromod 2.0 345 ghz min 1405ghz max on smartass. i fully charge bout 1 a day
pimped out g2

Pershoot released his kernel the other day pretty nice and smooth
Sent from my HTC Vision using XDA App

Alright I'm sleepy so this will be in rambling form but...
I've tried Umaro's and I'm not sure if it was the undervolting (which I haven't looked into tweaking) but my phone kept stuttering no matter which governor I used. I was using Htcclay's Super CM7 1.8 with cpu set to 245/1113
I also used the stock kernel that's been on CM7 with no problems and average to good battery life (10-15 hours of active use: texting, browsing, few calls, and playing the occasional game)
Most recently I've used Pershoots which I had heard worked great. I myself love it. Almost same battery life as stock kernel but everything felt just a little bit smoother performance wise.
Here's a link to Pershoot's thread:http://forum.xda-developers.com/showthread.php?t=847672

The stock cm kernel in my opinion is finally good enough that it doesn't need changed. I have always flashed pershoots and occassionally others, but it truly does not need supplemented IMHO.
Sent from my HTC Vision using XDA Premium App

I'm using savaged zen, and I get around two days of battery on a charge, with normal use.
Min: 368 max: 768
Sent from my HTC Vision using XDA App

Using Pershoots latest kernel, have nothing but good things to say about his kernels. Always my go to kernel.

fedtemis said:
I'm using savaged zen, and I get around two days of battery on a charge, with normal use.
Min: 368 max: 768
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
You're running that on Vision? I can't seem to find it for our device.

Stock CM7 kernel here. I run 245/806 Interactive with automatic brightness. I've found that when wifi is on, keeping the cell radio @ 2G only works wonders. Wifi is set to sleep on screen off, but not when plugged in. 1 day 7 hours on this charge so far with 23% left. I would consider my use light to moderate.
HTC Vision (G2) - CM7 B95 w/AUS radio
Your is not short for you are, but you're is.|It's means it is and never ever anything else.|Pluralization by way of an apostrophe is always wrong!

durps said:
How many .35 kernels are available? I'm only aware of Umaro's and the stock CM kernel. I'm trying to achieve better battery life, so what kernel are you guys using?
So far, using Umaro's, I'm getting regular battery life, nothing special. Haven't tried the stock CM kernel.
Are they any other undervolted kernels available?
Click to expand...
Click to collapse
I'm wondering where can I download the Umaro's kernel. I check out his github (https://github.com/umaro/htc-kernel-msm7x30) only to find out that the source is available.

[Q] Nexus 4 Franco Kernel

I Currently flashed franco kernel on my nexus 4 . My question should I leave everything to default ? And how to exactly do I under volt in franco. I have really never under volted
Thanks

dia_naji said:
I Currently flashed franco kernel on my nexus 4 . My question should I leave everything to default ? And how to exactly do I under volt in franco. I have really never under volted
Thanks
Click to expand...
Click to collapse
Default settings are fine for a decent battery life. UV doesn't really increase the battery life; its used to reduce the heating when using processor intensive apps (games). But if you don't know what you are doing, its recommended that you don't change any settings.
Sent from my Nexus 4

blitzzz3434 said:
Default settings are fine for a decent battery life. UV doesn't really increase the battery life; its used to reduce the heating when using processor intensive apps (games). But if you don't know what you are doing, its recommended that you don't change any settings.
Sent from my Nexus 4
Click to expand...
Click to collapse
That's really my intention. Right now I am running
384 mhz- 725mV
1026 Mhz-900mV
1512 Mhz-1024 mV

Do you have the Franco kernel app?

dia_naji said:
That's really my intention. Right now I am running
384 mhz- 725mV
1026 Mhz-900mV
1512 Mhz-1024 mV
Click to expand...
Click to collapse
I have UV about 100mV with the franco kernel app. so pretty much like what you have done and I haven't noticed any loss of performance.
Sent from my Nexus 4

Yes
Sent from my Nexus 4

decided to bump this instead of starting a new thread
Is it pretty much the consensus that undervolting w franco kernel on the N4 doesn't noticeably increase battery life?

spitswap said:
decided to bump this instead of starting a new thread
Is it pretty much the consensus that undervolting w franco kernel on the N4 doesn't noticeably increase battery life?
Click to expand...
Click to collapse
I haven't notice any significant increase in battery life, if any. However, the device runs so much cooler than before.
I am now experimenting with 150mV UV. Haven't had any problems with stability or camera.
Sent from my Nexus 4

Undervolting can somewhat increase battery life. Undervolting is meant for lowering CPU power to reduce thermal heat and it will definitely increase the life of the CPU. It doesn't really increase battery life, it might save a little bit but not much.
Sent from my Nexus 4 using Tapatalk 2

Got a question for Franco kernel + Franco Kernel updater app user
Do you have the hotplug control in Frequencies/Voltages menu? It seems to be not there for me. If I flash it with stock kernel then the hotplug control is there but can't change anything. If I flash it with Franco's kernel, then the hotplug control is missing.
Using Franco's latest R119 kernel

frozzbyte said:
Got a question for Franco kernel + Franco Kernel updater app user
Do you have the hotplug control in Frequencies/Voltages menu? It seems to be not there for me. If I flash it with stock kernel then the hotplug control is there but can't change anything. If I flash it with Franco's kernel, then the hotplug control is missing.
Using Franco's latest R119 kernel
Click to expand...
Click to collapse
Franco didn't add hotplugging feature back yet. He might add it back in the next app update.
Sent from my Nexus 4 using Tapatalk 2

frozzbyte said:
Got a question for Franco kernel + Franco Kernel updater app user
Do you have the hotplug control in Frequencies/Voltages menu? It seems to be not there for me. If I flash it with stock kernel then the hotplug control is there but can't change anything. If I flash it with Franco's kernel, then the hotplug control is missing.
Using Franco's latest R119 kernel
Click to expand...
Click to collapse
Something similar happened to me while I was using faux. You have to flash the rom first and kernel later. If you flash kernel first and then the rom some of the features on kernel settings might disappear.

Hotplug is available since quite long time.
Nothing to do with flashing Roms.
Unleashed by my Nexus 4

thought I'd bump instead of starting a new thread.
what's the best settings for the cpu hotplug control? I've set suspend frequency to 384000, suspend frequency is the CPU frequency when the screen if off?
cores on touch is how many CPU cores get used when screen is touched? I kept this to 2.
now I'm not too sure what first_level is used for though. so I left it at 60.
the new app is good but lacks description for some of the settings.

alpha-dog said:
thought I'd bump instead of starting a new thread.
what's the best settings for the cpu hotplug control? I've set suspend frequency to 384000, suspend frequency is the CPU frequency when the screen if off?
cores on touch is how many CPU cores get used when screen is touched? I kept this to 2.
now I'm not too sure what first_level is used for though. so I left it at 60.
the new app is good but lacks description for some of the settings.
Click to expand...
Click to collapse
Do u want to apply the 'best settings' to increase battery life or performance? And I'm using the ones you have stated, pretty balanced stuff. Keep it that way

Galaxy S Android 4.4 Unstable overclock

Hi there,
I want to get the most performance out of my old galaxy s but i have a slight problem with 4.4.
I came from Slimbean android 4.3 on 1.2ghz because it worked really slow and gave me alot of problems.
I first flashed (After full wipe) to Mackay 4.4 rom but whatever govenor or sheduler i am using it crashes everytime after a minute or so doing some simple tasks from the slightest overclock (1.1 ghz).
So i flashed to CyanAOSP (full wipe) to see if it would fix the problem but the problem still exist on this rom :c
Is there something wrong with my device?
Greetings,
- Merlin

Taking the phone to pieces and applying thermal compound to the chips gave me another 100Mhz. (rock solid at 1200Mhz when 3D gaming etc). There are 2 chips underneath the motherboard, and if you remove the sim tray from the board there are another few under there. I did them all. Be very careful if you're using Arctic Silver. I would have preferred to use the cheap white stuff but I didn't have any. There is a thread if you search for it with instructions on how to do this if you need it.
And with overclocking there's an element of luck. There are variations in the manufacturing of the chips themselves which can make your particular phone good (or useless) for overclocking.
Sent from my GT-I9000 using Tapatalk

knuckles1978 said:
Taking the phone to pieces and applying thermal compound to the chips gave me another 100Mhz. (rock solid at 1200Mhz when 3D gaming etc). There are 2 chips underneath the motherboard, and if you remove the sim tray from the board there are another few under there. I did them all. Be very careful if you're using Arctic Silver. I would have preferred to use the cheap white stuff but I didn't have any. There is a thread if you search for it with instructions on how to do this if you need it.
And with overclocking there's an element of luck. There are variations in the manufacturing of the chips themselves which can make your particular phone good (or useless) for overclocking.
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
But why could it do 1.3 ghz on android 4.3 easily? I think it has nothing to do with heat atm.
Because sometimes i can run antutu for 2 times in a row before it crashes. But sometimes it crashes instantly when i press the start button.

MerlijnD said:
But why could it do 1.3 ghz on android 4.3 easily? I think it has nothing to do with heat atm.
Because sometimes i can run antutu for 2 times in a row before it crashes. But sometimes it crashes instantly when i press the start button.
Click to expand...
Click to collapse
It's kernel related issues. I managed to clock in at 1.6Ghz rock stable on CM 10.2 but likewise, a 1.2Ghz overclock on 4.4 is giving me very rear soft reboots

MrAndroid12 said:
It's kernel related issues. I managed to clock in at 1.6Ghz rock stable on CM 10.2 but likewise, a 1.2Ghz overclock on 4.4 is giving me very rear soft reboots
Click to expand...
Click to collapse
Ah ok now that i know that, its probably going to get fixed sooner or later

Interesting. Mine is stable at 1.2Ghz on 4.4, so I'll be trying to push it a bit more when I get new kernels. I put Arctic Silver on all the chips the other day, even the ones under the sim card tray so hopefully that will help it. It has defo done something because my phone was unstable at 1.2Ghz before I did it.
Sent from my GT-I9000 using Tapatalk

knuckles1978 said:
Interesting. Mine is stable at 1.2Ghz on 4.4, so I'll be trying to push it a bit more when I get new kernels. I put Arctic Silver on all the chips the other day, even the ones under the sim card tray so hopefully that will help it. It has defo done something because my phone was unstable at 1.2Ghz before I did it.
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
I just flashed to semaphore kernel on mackay rom and it is fully stable on 1.3 ghz atm.

Is there a 4.4 semaphore kernel?
Sent from my GT-I9000 using Tapatalk

Guys , every kernel has its own custom voltages for over clocking . just use an app that controls the voltage (you can find one in play store ) and increase the voltage step by step until your phone is stable. For example : on Mackay I can't over clock not even to 1100 MHz with stock voltages without the phone rebooting after a few seconds but on Semaphore I can oc with stock voltages up to 1200MHz and its stable . on Mackay I messed around with higher voltages until I found the ones that my phone is happy with and I could oc up to 1300 MHz stable after that.
knuckles1978 said:
Is there a 4.4 semaphore kernel?
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
Yes there is , check the Semaphore thread for 3.4.0
Sent from my GT-I9000 using Tapatalk

I didn't realise that voltages were set in a kernel. Thanks
Do you know what voltages I should be using for a 1300 or 1400 overclock? I'm sitting stable at 1200 at the moment, how much do you think I should raise the voltage to keep it stable with another 100 or 200 MHz increase?
Edit: I'll try the 4.4 semaphore kernel
Sent from my GT-I9000 using Tapatalk

I personally use these settings:
Frequency - CPU - Int
1000MHz - 1225 - 1100
1200MHz - 1300 - 1100
1300MHz - 1350 - 1100
1400MHz - I've never got stable 1400MHz OC :/ (I think 1400 1150 should be right for most devices)
Optional:
1100MHz - 1250 - 1100 (some kernels have this step)

Thanks again, that's me running rock stable even under gaming at 1.3Ghz. Not tried 1.4.......yet lol
Why is there two voltage values you gave for each clock speed though?
I used setcpu, and set the first value. I'm not sure what the other value you gave is? GPU voltage?? Thx

knuckles1978 said:
Thanks again, that's me running rock stable even under gaming at 1.3Ghz. Not tried 1.4.......yet lol
Why is there two voltage values you gave for each clock speed though?
I used setcpu, and set the first value. I'm not sure what the other value you gave is? GPU voltage?? Thx
Click to expand...
Click to collapse
Second value is internal voltage (mostly used with LiveOC to stabilize as it gives voltage to GPU and RAM). With normal OC it should be at stock (1100mV). Some apps, like NSTools gives you opportunity to change those.
Normal OC affects CPU, and liveOC CPU, GPU, RAM, so it's more likely to be unstable. I can't reach 1100 on LiveOC, but on normal I have 1300 easily.

midnight911 said:
Second value is internal voltage (mostly used with LiveOC to stabilize as it gives voltage to GPU and RAM). With normal OC it should be at stock (1100mV). Some apps, like NSTools gives you opportunity to change those.
Normal OC affects CPU, and liveOC CPU, GPU, RAM, so it's more likely to be unstable. I can't reach 1100 on LiveOC, but on normal I have 1300 easily.
Click to expand...
Click to collapse
Ah well i am using stock voltages from semaphore kernel and 130% live oc. It is fully stable atm.

MerlijnD said:
Ah well i am using stock voltages from semaphore kernel and 130% live oc. It is fully stable atm.
Click to expand...
Click to collapse
Heh there are no two same devices. One overclocks better and one at all. There are devices which can't be overclocked. It's just luck you have with your hardware.

Need help with Faux Kernel Ultimate

I'm in a huge dilemma right now, I want to install the "Ultimate" version of Faux's kernel but when I'm using it, my N4 always reboots on start up. From this, it's obvious that that my N4 cannot handle the OC at 1.8ghz and every time I attempt to lower the CPU frequency in trickster mod, my N4 reboots before I get a chance. Anyone out there have a version of Faux's Ultimate kernel that doesn't come at 1.8ghz by default when you install it?

You could try waiting for your device to cool down then booting it up and changing the frequency. I'm undervolted -100 and I'm using intellidemand and I have no problems with 1.8. The battery life is still unbelievably good - 88% with 1h SOT right now (ran quadrant 5 times).
Sent from my Nexus 4 using Tapatalk

Post your UnderVolting and OverClocking results!

Currently looking into the process of OC'ing and UV'ing. It would be cool to see what results you guys have got and what difference in battery life you perceive!
Im currently at stock ?
Sent from my Nexus 7 using xda app-developers app

Arthedes said:
Currently looking into the process of OC'ing and UV'ing. It would be cool to see what results you guys have got and what difference in battery life you perceive!
Im currently at stock ?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
I have the same PVS CPU than you with 0,9 Volt at 384Mhz and 1,05 Volt at 1,5GHz.
I could undervolt 50mV accross the board; undervolt the lowest frequenz (384Mhz) to 0,73 Volt and overclock the CPU to 2,0Ghz max.
Im running Cyanogenmod with Glitch Kernel and use Trickster Mod for OC and CPU UV.
With Glitch Kernel I can even undervolt the GPU 100mv accross the board with an increased max GPU of 450Mhz.
(More is possible, but I nearly dont play games with my tablet)
With this I get about 8 hours of SOD time with Surfing.
When I'm on a long business trip and use my N7 for (Kindle and pdf) offline book reading I reach something like 13-15hours SOD time.

zz_marcello said:
I have the same PVS CPU than you with 0,9 Volt at 384Mhz and 1,05 Volt at 1,5GHz.
I could undervolt 50mV accross the board; undervolt the lowest frequenz (384Mhz) to 0,73 Volt and overclock the CPU to 2,0Ghz max.
Im running Cyanogenmod with Glitch Kernel and use Trickster Mod for OC and CPU UV.
With Glitch Kernel I can even undervolt the GPU 100mv accross the board with an increased max GPU of 450Mhz.
(More is possible, but I nearly dont play games with my tablet)
With this I get about 8 hours of SOD time with Surfing.
When I'm on a long business trip and use my N7 for (Kindle and pdf) offline book reading I reach something like 13-15hours SOD time.
Click to expand...
Click to collapse
I know a bit how i can get to know my cpu's pvs stepping, but since you have the same as me, what is it exactly? And is it considered a fast, normal or slow binned cpu?
Sent from my Nexus 7 FHD using Tapatalk

mine are way lower and im pretty stable, no crashes but i dont' play games
im on ElementalX oc to 1.728ghz
at 38400 >>> im at 77500
at 702000..... 85000
at 102600.......90000
at172800 .... 102500

Whats the best way to test stability? Ive got this app https://play.google.com/store/apps/details?id=com.into.stability but i dont seem to get any wiser... Anyone know what i should do?
Sent from my Nexus 7 FHD using Tapatalk

Arthedes said:
Whats the best way to test stability? Ive got this app https://play.google.com/store/apps/details?id=com.into.stability but i dont seem to get any wiser... Anyone know what i should do?
Sent from my Nexus 7 FHD using Tapatalk
Click to expand...
Click to collapse
yup, run that for like 30mins on classic test, should be fine if it doesn't crash

cobyman7035 said:
yup, run that for like 30mins on classic test, should be fine if it doesn't crash
Click to expand...
Click to collapse
I did that, but with voltages that are stable there, antutu crashes. And with voltages that are antutu stable, my device crashes randomly. I can run the scaling test with very low voltages across the board for more than an hour and it doesnt crash.
With other apps it just crashes.
This is an experimental undervolt that rarely crashes when switching apps:
I dont know which clock speed and its corresponsing voltage is unstable because the clock speed ranges from 384 to 1512 mhz and i dont have a crash log.
So I added 12.5 mV across the board, and this hasnt crashed so far!
But, being the perfectionist that I am, I want the Ultimate Undervolt. Is there a way to see what frequency you are running when it crashes?
Sent from my Nexus 7 FHD using Tapatalk

I achieve stable 700mV at 1026MHz...
30mins stress run on "stability test" app and on stress run on "setCpu"
At 1134MHz the tablet freezes for the first time when I switch to 7875mV
Isn't it weird??

I dont think the stability test app is working. I could undervolt 1512 mhz to 900mV and have it run stable, but everyday use stable is with 987.5mV
Sent from my Nexus 7 FHD using Tapatalk

zz_marcello said:
I have the same PVS CPU than you with 0,9 Volt at 384Mhz and 1,05 Volt at 1,5GHz.
I could undervolt 50mV accross the board; undervolt the lowest frequenz (384Mhz) to 0,73 Volt and overclock the CPU to 2,0Ghz max.
Im running Cyanogenmod with Glitch Kernel and use Trickster Mod for OC and CPU UV.
With Glitch Kernel I can even undervolt the GPU 100mv accross the board with an increased max GPU of 450Mhz.
(More is possible, but I nearly dont play games with my tablet)
With this I get about 8 hours of SOD time with Surfing.
When I'm on a long business trip and use my N7 for (Kindle and pdf) offline book reading I reach something like 13-15hours SOD time.
Click to expand...
Click to collapse
Will you post your voltage table?
What are the Kernel setup settings that you choose and have you ever OCed to 2.2 and still get good undervolting?