CPU stuck on low freq while unplugged

[unihero]

Just got myself an ASUS Vivobook X540MA, and the CPU (Celeron N4000) is giving me some trouble. When the laptop is plugged in, it behaves like normal and boosts up to 2.5 Ghz, and the machine's performance is ok. However, when I unplug the laptop, the CPU clock speed instantly drops to 0.79 Ghz (as reported by TM) and stays frozen, and therefore, the laptop becomes barely usable. Tried updating the BIOS, changed the power plan - nothing helped. Any tips? thanks in advance!

[Moonzy]

1 hour ago, unihero said:

Any tips?

almost every laptop will power limit the components when it's on battery

to prolong battery life and battery health

[unihero]

That's fair, but do you reckon there's a way to give the CPU a bit more juice when it's unplugged? Because otherwise this thing is unusable unless plugged in...

[unclewebb]

@unihero On laptops, Windows 10 usually hides the High Performance power plan. To access this, open a command window and type in this command.

 

powercfg /s SCHEME_MIN

 

To go back to the Balanced power profile type in this.

 

powercfg /s SCHEME_BALANCED

[unihero]

@unclewebb I do actually have the High Performace plan on! Does nothing, unfortunately, and from what I've managed to dig up myself, I started to think that this limitation is probably baked into the CPU and that there's nothing in Windows or BIOS that I can do.

[jlmercado321]

hola, tengo exactamente la misma laptop y el mismo problema. Instalé Ubuntu y el problema persiste. Es muy raro, porque cuando actualicé el Bios, en el primer arranque posterior si funcionó a la máxima frecuencia sin estar conectado a la electricidad y pensé que se había arreglado, pero sigue igual. Has podido arreglarlo?

 

[Mark Kaine]

On 9/30/2020 at 2:04 PM, unihero said:

That's fair, but do you reckon there's a way to give the CPU a bit more juice when it's unplugged? Because otherwise this thing is unusable unless plugged in...

 

On 9/30/2020 at 1:12 PM, Moonzy said:

almost every laptop will power limit the components when it's on battery

to prolong battery life and battery health

 

On 9/30/2020 at 9:32 PM, unclewebb said:

@unihero On laptops, Windows 10 usually hides the High Performance power plan. To access this, open a command window and type in this command.

 

powercfg /s SCHEME_MIN

 

To go back to the Balanced power profile type in this.

 

powercfg /s SCHEME_BALANCED

I know old thread, but I was curious (because I recalled that differently) 

 

of course a laptop will downclock when on battery... but only at idle, if it's doing something - like importing a movie in Windows™ movie maker® it will boost to whatever its boost is, usually the thing that makes a laptop throttle is the same as any computer, temps. 

 

laptop plugged in while "idling" ignore the HDD thing, there's no difference when it doesn't do that... 

 

laptop on battery, actually doing something (movie maker) 

 

 

laptop on battery idling... 

 

 

 

my very sophisticated "5 seconds common sense power settings" 

[Moonzy]

3 minutes ago, Mark Kaine said:

my very sophisticated "5 seconds common sense power settings" 

im not sure if adjusting cpu power usage in power options will affect what manufacturer does in bios, but not all laptops have throttling

 

have you tried firing gpu and cpu at the same time

[Mark Kaine]

1 minute ago, Moonzy said:

im not sure if adjusting cpu power usage in power options will affect what manufacturer does in bios, but not all laptops have throttling

 

have you tried firing gpu and cpu at the same time

yeah i forgot to check the cpu settings actually... 

 

 

Also nothing fancy... 

 

oh, I tried both (it kinda is in that screen shot cause movie maker is using the Intel gpu) but I only have heaven installed and I hadn't any luck... 16% cpu usage, 0.8 Ghz...

 

Vsync off! (22 fps lol) 

 

 

[Packss]

On 9/30/2020 at 7:17 PM, unihero said:

@unclewebb I do actually have the High Performace plan on! Does nothing, unfortunately, and from what I've managed to dig up myself, I started to think that this limitation is probably baked into the CPU and that there's nothing in Windows or BIOS that I can do.

 

On 12/2/2020 at 11:28 PM, Mark Kaine said:

yeah i forgot to check the cpu settings actually... 

 

 

Also nothing fancy... 

 

oh, I tried both (it kinda is in that screen shot cause movie maker is using the Intel gpu) but I only have heaven installed and I hadn't any luck... 16% cpu usage, 0.8 Ghz...

 

Vsync off! (22 fps lol) 

 

 

Quite old thread and my first post here but maybe it will help.
I had the same problem of my cpu getting stuck (mine at 0.5 Ghz) and unplugging and plugging the battery while charging solved the problem.
My laptop doesn't have a removable battery but rather a button that does that.