Acer laptop AC detection

[Bastien Nocera]

On Sun, 2019-03-24 at 18:11 -0700, Justin Smith wrote:
> As seen here: 
> https://askubuntu.com/questions/1122662/how-can-i-make-upower-and-the-power-subsystem-recognize-that-the-power-supply-is
> 
> That is not my post but, it seems, everyone with this laptop is
> having 
> the same issue.
> 
> I have an Acer Predator Helios 500 PH517-61-R0GX laptop and my AC 
> adapter keeps showing as off-line. Because of this my whole machine 
> throttles down like it is running on battery. I can change the CPU 
> governor to "performance" which forces the CPU to normal speeds but
> I 
> cannot keep the GPU (AMDGPU Vega 56) running at an acceptable speed.
> 
> How can I help get this fixed? I don't even see ACPI events when I 
> unplug the power cord.
> 
> Is there information I can provide you for your next patch to allow 
> upower to correctly identify this AC adapter?

Unfortunately, no, you need a fix (or a work-around) in the kernel for
this to work. The mailing-list details are linked from:
https://01.org/linux-acpi

> Is there a way to manually toggle the AC online setting?
> 
> Is there a way to make a false AC device to trick upower into
> thinking 
> the power is plugged in?

Cheers