Why is this happening?

The_Ogre

The_Ogre

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At first I thought it was random, but then I realised that whenever I disconnect the power from my laptop momentarily, the laptop becomes almost unusably slow after reconnecting the power. The only thing that brings the speed back to normal is restarting it;

Its almost as if the laptop is in an ultra power saving mode and does not realise the power cable is plugged back in. It's frustrating as hell!

I have checked power management and have no idea where else to check.

Any ideas? Oh, it's a Dell e7250
 
what do you see when you unplug and then replug the power?
Is it still on best performance?

1647512400860.png
 
The_Ogre said:
At first I thought it was random, but then I realised that whenever I disconnect the power from my laptop momentarily, the laptop becomes almost unusably slow after reconnecting the power. The only thing that brings the speed back to normal is restarting it;

Its almost as if the laptop is in an ultra power saving mode and does not realise the power cable is plugged back in. It's frustrating as hell!

I have checked power management and have no idea where else to check.

Any ideas? Oh, it's a Dell e7250
Click to expand...
Why in the f are you unplugging the laptop just "momentarily"..?? Makes no sense..

You unplug, laptop goes into power saving and while still working its way into power saving mode, you plug the power back in and tell it suddenly come back to life into best performance mode.. of course the laptop is as confused as you are...
 
WAslayer said:
Why in the f are you unplugging the laptop just "momentarily"..?? Makes no sense..
Click to expand...
Because when I don't have to do a lot op typing, I sit on the couch instead of the desk. Sitting on the couch means the laptop moves a lot more on my lap and sometimes the movement causes the cable to become unplugged. Plugging it back in causes it to behave like I described above.

I cannot remember changing any settings, but my laptop is always plugged in and on so I'm not sure if some update ran on Sunday because this started happening on Sunday afternoon when I used it for the first time for the day.
 
The_Ogre said:
Because when I don't have to do a lot op typing, I sit on the couch instead of the desk. Sitting on the couch means the laptop moves a lot more on my lap and sometimes the movement causes the cable to become unplugged. Plugging it back in causes it to behave like I described above.

I cannot remember changing any settings, but my laptop is always plugged in and on so I'm not sure if some update ran on Sunday because this started happening on Sunday afternoon when I used it for the first time for the day.
Click to expand...
Just go sit on the couch with the laptop unplugged to begin with..
 
The_Ogre said:
Because when I don't have to do a lot op typing, I sit on the couch instead of the desk. Sitting on the couch means the laptop moves a lot more on my lap and sometimes the movement causes the cable to become unplugged. Plugging it back in causes it to behave like I described above.

I cannot remember changing any settings, but my laptop is always plugged in and on so I'm not sure if some update ran on Sunday because this started happening on Sunday afternoon when I used it for the first time for the day.
Click to expand...
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The centre pin on a Dell power adaptor is not positive it is sense/data. So that the laptop can adjust power and charge rates to the matching adaptor.

This sensing system is broken, bad kink in the cable or even inside your system, and your CPU is throttling to it's lowest point.

The reason the restart works? On some older models the sensing is flawed while power is off (so it will charge while off), it will even be at regular performance because it started with what it thinks is a good power source. BTW a lot of the generic universal supplies do the same thing or plugging an HP adaptor in.

You will also note the battery most likely never fully charges.

To fix, download Throttlestop, play around with the settings while keeping task manager performance tab open, then set it to start with the system, the app allows you to ignore the issues that causes different throttle events (including temps/overheats - use with caution!). If the options do not work, go with an older version of the app.

Also, on 2nd gen i5 and i7 CPUs, you will also find the temperature sensor to be the cause of the throttling on a lot of machine, especially Dell Inspiron Models.
 
D4N_CPT said:
The centre pin on a Dell power adaptor is not positive it is sense/data. So that the laptop can adjust power and charge rates to the matching adaptor.

This sensing system is broken, bad kink in the cable or even inside your system, and your CPU is throttling to it's lowest point.

The reason the restart works? On some older models the sensing is flawed while power is off (so it will charge while off), it will even be at regular performance because it started with what it thinks is a good power source. BTW a lot of the generic universal supplies do the same thing or plugging an HP adaptor in.

You will also note the battery most likely never fully charges.

To fix, download Throttlestop, play around with the settings while keeping task manager performance tab open, then set it to start with the system, the app allows you to ignore the issues that causes different throttle events (including temps/overheats - use with caution!). If the options do not work, go with an older version of the app.

Also, on 2nd gen i5 and i7 CPUs, you will also find the temperature sensor to be the cause of the throttling on a lot of machine, especially Dell Inspiron Models.
Click to expand...
Thanks for the comprehensive answer! Appreciate it.
 
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