X1C Gen 1: Discharging even though the power cable is connected and LED is lit.

Just now a new strange phenomenon appeared.
The power cord is connected.
When the laptop is switched off, it charges.
When the laptop is switched on, it discharges, even though the LED at power cable connector is on.
The acpi state is, that it is discharging.
As if the power via the cable is not enough to charge and operate the laptop at the same time.

I verified this by leaving it in both states for some time.
I have tried various power adaptors and power plugs.

I am using Linux (shouldn't matter).
I have tried rebooting.

Has anybody else had that issue?

Any ideas?
Opening her up and checking whether something got loose?

Maybe the power adapator is getting recognized as a low Watt pwer adaptor and I need to play with the pins of the socket?

 

Found the problem. The two pins inside where the powerplug goes were bent ever so slightly down. These are used to recognize what kind of powerplug is connected.

Idioitic as it is, this only happens when the laptop is plugged in. And when it is not, it just charges, not caring what kind of power connector it is, or so it seems.

So bending these two pins up slightly again made it charge fine, even when powered on.