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undervolting

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By mega_man, Senior Member on 25th May 2014, 10:56 AM
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has someone undervolted is his atrix hd if yes then how and what were the rom and kernel settings kindly please help me
 
 
25th May 2014, 02:14 PM |#2  
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Quote:
Originally Posted by mega_man

has someone undervolted is his atrix hd if yes then how and what were the rom and kernel settings kindly please help me

You're lucky I remembered I uploaded my screenshots to G+ with my voltage table



See where it starts going down in 25mV intervals, do that all the way to the bottom (the app there is Kernel Tuner). The top two frequencies can be dropped by 25, but from there and any lower on the top two and you'll get an undervolt forced reboot. Some of the low end freqs might be able to go a bit lower than what my scale gives, you'll just have to test yourself since every phone is different in the undervolt department. And do not set it to activate on boot until you've pushed your phone a bit and know those voltages work. It is possible to undervolt brick a phone forcing you to do a factory reset to remove the saved undervolt values (or a full rom install if you save bad undervolt settings in an init.d script).
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25th May 2014, 03:08 PM |#3  
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Quote:
Originally Posted by skeevydude

You're lucky I remembered I uploaded my screenshots to G+ with my voltage table



See where it starts going down in 25mV intervals, do that all the way to the bottom (the app there is Kernel Tuner). The top two frequencies can be dropped by 25, but from there and any lower on the top two and you'll get an undervolt forced reboot. Some of the low end freqs might be able to go a bit lower than what my scale gives, you'll just have to test yourself since every phone is different in the undervolt department. And do not set it to activate on boot until you've pushed your phone a bit and know those voltages work. It is possible to undervolt brick a phone forcing you to do a factory reset to remove the saved undervolt values (or a full rom install if you save bad undervolt settings in an init.d script).

so are these values arlready lowered or are these stock values ? and which rom were these settings made ?
Last edited by mega_man; 25th May 2014 at 03:15 PM.
25th May 2014, 03:34 PM |#4  
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Quote:
Originally Posted by mega_man

so are these values arlready lowered or are these stock values ? and which rom were these settings made ?

Rom shouldn't be an issue, this a kernel feature to undervolt cpu.
25th May 2014, 05:36 PM |#5  
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Originally Posted by mega_man

so are these values arlready lowered or are these stock values ? and which rom were these settings made ?

Guessing at the rom....probably PAC 4.4, but like Techno said, that really doesn't matter. And those are lowered.
26th May 2014, 02:28 AM |#6  
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Quote:
Originally Posted by skeevydude

You're lucky I remembered I uploaded my screenshots to G+ with my voltage table

See where it starts going down in 25mV intervals, do that all the way to the bottom (the app there is Kernel Tuner). The top two frequencies can be dropped by 25, but from there and any lower on the top two and you'll get an undervolt forced reboot. Some of the low end freqs might be able to go a bit lower than what my scale gives, you'll just have to test yourself since every phone is different in the undervolt department. And do not set it to activate on boot until you've pushed your phone a bit and know those voltages work. It is possible to undervolt brick a phone forcing you to do a factory reset to remove the saved undervolt values (or a full rom install if you save bad undervolt settings in an init.d script).

Thanks, mate! It was trial and error, wasn't it? Is it too noticeable the battery save?
26th May 2014, 05:29 AM |#7  
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Originally Posted by mauchito

Thanks, mate! It was trial and error, wasn't it? Is it too noticeable the battery save?

It doesn't make a big difference for me, but you should just try and see it yourself.
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