I purchased a year 2022 used HP Laptop with USB-C power supply. The BIOS is pwd protected from previous owner so the standard BIOS "WAKE ON AC POWER" is disabled.
I can power the HP off and on via the standard laptop POWER ON key (which is inconveniently located on top of the laptop keyboard). I have the laptop connected to HDMI monitor. When I shut off the laptop via OS, it completely shuts down- and when it comes time to power it on I need to open up the laptop and press the POWER ON key on the keyboard. If I am working remotely and something hangs I need to get a neighbor to reboot the laptop.
I noticed that HP sells a USB-C Docking station that has its own POWER ON key. I am wondering if there is some Hewlett Packard standard code sent over USB-C to inform the laptop to PowerON/Suspend/PowerOff/Reboot?
I looked at the USB Type C Power Delivery https://www.embedded.com/usb-type-c-and-power-delivery-101-power-delivery-protocol/ and cannot find any message where the PowerSupply/Dock can inform the laptop USB-C port that the device should be turned on.... Not sure where to look for this type of documentation. Imagine it is vendor specific? Any thoughts or help to help me construct a custom circuit so I do not need to buy a docking station?