Hey, I just installed SteamOS on my GPD Win 5 and wanted to start using Decky Loader. Unfortunately, I can’t access the right quick-access menu.

Does anyone know how to remap or bind currently unused keys (like the back grip buttons) to open that menu?

++ UPDATE ++

Got it working by remapping the back button in SteamOS using keyd.

In my case I remapped the right back button from F3 to Alt + Meta + 2 (A-M-2 in keyd).

Steps

1. Exit Gaming Mode and switch to Desktop Mode.
2. Open Konsole/Terminal.
3. Set a password for the deck user: passwd deck
4. (Optional / not recommended) Disable package signature checks if you run into Pacman signature issues. Only do this if you know what you're doing. I only did this because I was too lazy to fix the keyring properly.

Edit:

sudo nano /etc/pacman.conf

Change:

SigLevel = Required DatabaseOptional

to:

SigLevel = Never

Save with:

• CTRL + O
• CTRL + X

1. Install keyd: sudo pacman -S keyd
2. Find the button mapping: sudo keyd monitor

Press the button you want to remap.

In my case the right back button generated:

f3

1. Create/edit the config: sudo nano /etc/keyd/default.conf

Add:

[ids]
*

[main]
f3 = A-M-2

Save again with:

• CTRL + O
• CTRL + X

1. Restart keyd: sudo systemctl restart keyd
2. Enable keyd on boot: sudo systemctl enable keyd

Important

Using:

[ids]
*

will remap F3 system-wide, including your actual keyboard F3 key.

You can avoid this by replacing * with your specific device ID instead.
I didn't bother because I only use the handheld buttons.