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macOS defaults to 1.3GHz min speed, but CPU supports 0.8GHz

Open alexmenn opened this issue 6 years ago • 14 comments

I came from xiaomi notebook pro, and there we we're using cpufriend kext pack to get 800mhz low freq and keep some battery.

Is this possible with i7 8750h? I've searchned in tonymac and other sites and didn't found nothing.

alexmenn avatar Jan 24 '19 16:01 alexmenn

It's on the to-do list. Have you tried following the instructions for CPUFriend (https://github.com/acidanthera/CPUFriend/blob/master/Instructions.md)?

If you get this to work, a pull request is appreciated.

bavariancake avatar Jan 28 '19 08:01 bavariancake

Maybe need CPUFriendDataProvider.kext and need hwpenable

M69W avatar Feb 15 '19 02:02 M69W

I know @M69W , but we must configure cpufrienddataprovider, and I dont know how. I will wait to an expert :)

alexmenn avatar Feb 16 '19 11:02 alexmenn

Instructions are linked above. Proper sleep support will likely yield better power savings. Fixing a problem and providing a pull request is a way we all end up with a better setup.

Asking everyone else repeatedly does not improve anything. Please spend the time, submit a pull request, and be part of the solution.

bavariancake avatar Mar 03 '19 02:03 bavariancake

Maybe need CPUFriendDataProvider.kext and need hwpenable

You do not need the "HWPEnable" option, since HWP is already enabled. See "Testing power management" section of readme.

bavariancake avatar Mar 20 '19 01:03 bavariancake

This change is going to be of limited value - better sleep support would yield much better power savings on battery, and this is irrelevant on AC power. Closing until someone provides a pull request.

bavariancake avatar Mar 20 '19 01:03 bavariancake

Re-opening this issue for better visibility. Pull requests welcome.

bavariancake avatar May 23 '19 04:05 bavariancake

https://github.com/stevezhengshiqi/one-key-cpufriend one key is easy for everyone to do it.

M69W avatar May 23 '19 14:05 M69W

https://github.com/stevezhengshiqi/one-key-cpufriend one key is easy for everyone to do it.

This should do. Although, It doesn't drop to 0.8 after waking up from sleep for me.

erenatas avatar May 26 '19 12:05 erenatas

I applied this fix to my build, XPS 9570, i7-8750H, 1080P, 16GB, 256gb Toshiba and chose preference 2. My processor is idling at around 800-870mhz. Performance is a bit slower, but not terribly noticeable. Battery life has increased significantly. Thanks for the fix @erenatas!

Edit: my system doesn't sleep properly, the screen just turns off and acts like it's sleeping but the battery still drains like in wake mode. However when it wakes from this-non sleep state the CPU still idles around 800mhz.

d3myz avatar May 30 '19 15:05 d3myz

@d3myz - Check your power usage with Intel Power Gadget. It should be around 1-3W idle. Audio layout id 30 has an issue where you'll see 8-15W idle power usage after wakeup from sleep. If you can live with the headphone output not working correctly, audio layout id 11 doesn't have this issue. I haven't resolved/documented this problem yet.

bavariancake avatar May 30 '19 19:05 bavariancake

Ahh, i see it. I'm clocked down to 800mhz, but the PKG anbd Core together are using between 5-15w. I don't need a headphone out. how do i switch the layout?

d3myz avatar May 30 '19 20:05 d3myz

@d3myz https://github.com/Xigtun/xps-9570-mojave/issues/37

M69W avatar May 30 '19 23:05 M69W

@erenatas I've applied the following procedure https://github.com/stevezhengshiqi/one-key-cpufriend but cpu idle doesn't drop to 800ghz. is there anything i need to change on config.plist. I ve used the https://github.com/LuletterSoul/Dell-XPS-15-9570-macOS-Mojave config and i am only getting 1100ghz cpu idle. please help

prajals avatar Jun 04 '19 02:06 prajals