Just bought a new laptop acer predator helios 500 with AMD Ryzen CPU. Installed linux with a recent kernel (4.19) and it seems it’s not able to detect when the power cable is connected to the laptop.
I’ve read other troubleshooting posts in which the problem is only when the cable is connected after booting, or not recognized after connecting and disconnecting, but for me the problem occurs regardless of whether is booted on cable or not, connected/disconnected, laptop lid opened/closed, etc.
The power however doesn’t seem to be running out – that is, it won’t drop below the number that appears when the laptop is started – but as it’s taken to be on battery it triggers power saving settings (while being plugged to an electricity source).
I tried installing different modules such as
acpi-support, but it didn’t work.