Ref 主要是太久沒使用觸發電源保護措施。重置即可。

I submitted a ticket with steam and apparently it’s a bug. You have to put the system into battery storage mode to reset it. These are the steps they gave me:

  • Power the Steam Deck down normally (choose Shut Down from the Power menu)
  • Hold down the Volume+ button and press the power button. The Steam Deck should boot into the BIOS menu.
  • Using the D-Pad and A to select, navigate to “Setup Utility”
  • Navigate to the Power Menu
  • Choose Battery storage mode, and confirm.

You should see the Steam Deck power off, and the power LED will blink three times to confirm battery storage mode.

Wait a few minutes, then plug the Steam Deck in to the provided power supply and turn on the Steam Deck.