

Development - [Kernel][23.12.2021][Android 11] Kirisakura 1.0.1 for Sony Xperia...
source link: https://forum.xda-developers.com/t/kernel-23-12-2021-android-11-kirisakura-1-0-1-for-sony-xperia-1-iii-aka-sagami.4377449/page-5#post-86659003
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Development [Kernel][23.12.2021][Android 11] Kirisakura 1.0.1 for Sony Xperia 1 III aka "Sagami"
Freak07
Recognized Developer / Recognized Contributor
Jan 2, 2011 5,431 17,795
Is the Boeffla wakelock blocker in A11 kernel, too? How to use it if so?
It´s not in the A11 kernel. There´s also no reason to use it, if your phone sleeps just fine.
It´s more of a last resort for example, if your companies wifi causes your device to not sleep, due to a wakelock which originates due to your phones wifi driver not playing nicely with the companys wifi network, and your company´s IT-guys refuse to update/solve the issue on their end.
Blocking kernel wakelocks to get "better battery life" is more myth/placebo than anything else and will cause random issues like missed notifications etc.
Similar to the SD810, I feel like this SD888 chip has conservative voltage settings (too high) resulting in the higher temperatures, and could really be optimised with even some modest undervolting.
Freak07
Recognized Developer / Recognized Contributor
Jan 2, 2011 5,431 17,795
Freak07, is there *any* chance of you managing to introduce undervolting / voltage control? In either A11 or A12?
Similar to the SD810, I feel like this SD888 chip has conservative voltage settings (too high) resulting in the higher temperatures, and could really be optimised with even some modest undervolting.
No. CPU voltage can't be touched via kernel any longer, these times are over.
You can adjust GPU voltage, but it won't make a difference for non gaming usage, and probably not much for gaming usage either. (Just google around, I'm pretty sure you'll find what you need for that, although I wouldn't recommend playing with this as you can damage your chip if something goes wrong)
Use the battery saver feature to restrict max cpu freqs. That helps the most i guess.
Arguably sd888 chips aren't designed to run at peak perf for extended periods of time, without any form of active cooling.
No. CPU voltage can't be touched via kernel any longer, these times are over.
You can adjust GPU voltage, but it won't make a difference for non gaming usage, and probably not much for gaming usage either. (Just google around, I'm pretty sure you'll find what you need for that, although I wouldn't recommend playing with this as you can damage your chip if something goes wrong)
Use the battery saver feature to restrict max cpu freqs. That helps the most i guess.
Arguably sd888 chips aren't designed to run at peak perf for extended periods of time, without any form of active cooling.
that's too bad, usually with undervolting i gained 2 more hours screen on time with lucky silicon.
That's the same trash Intel pull on lot of their CPU when OEM voltage are simply to high and if you are not extremely unlucky with silicon you usually can lower a whole 0.1-0.2 V from oem voltages lowering temp around 5-10 C
Battery saver is trash, i use it when i need my phone to survive loger for work, but in normal usage performance decrease is pretty high.
That was one of the better possibility on android phones
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Freak07
Recognized Developer / Recognized Contributor
Jan 2, 2011 5,431 17,795
that's too bad, usually with undervolting i gained 2 more hours screen on time with lucky silicon.
That's the same trash Intel pull on lot of their CPU when OEM voltage are simply to high and if you are not extremely unlucky with silicon you usually can lower a whole 0.1-0.2 V from oem voltages lowering temp around 5-10 C
Battery saver is trash, i use it when i need my phone to survive loger for work, but in normal usage performance decrease is pretty high.
That was one of the better possibility on android phones
Voltage selection has come a long way since years ago on the modern QCOM chips. Unfortunately peak perf and heat too.
Not talking about the inbuilt battery saver into android system, but the kernel feature that's detailed in post #3.
Voltage selection has come a long way since years ago on the modern QCOM chips. Unfortunately peak perf and heat too.
Not talking about the inbuilt battery saver into android system, but the kernel feature that's detailed in post #3.
There is generally a higher voltage ceiling so even the worst binned chips can run without an issue, while most could have stable varying levels of undervolts, like the gpu I can undervolt with konabess easily a voltage notch down on all levels without a hitch and if I experiment could probably go lower. It's just more locked down nonsense. As for the cooling solution, it's cheap!
Totally agree. Would love to have the ability to try some undervolting.There is generally a higher voltage ceiling so even the worst binned chips can run without an issue, while most could have stable varying levels of undervolts, like the gpu I can undervolt with konabess easily a voltage notch down on all levels without a hitch and if I experiment could probably go lower. It's just more locked down nonsense. As for the cooling solution, it's cheap!
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