mkdir -p ~/.config/systemd/user nano ~/.config/systemd/user/v2ray.service Paste:

The most reliable approach for Steam Deck is command-line V2Ray core with a systemd user service . It runs quietly in the background, works in both Desktop and Game modes, and survives system updates (reinstall only if Pacman packages are wiped). Avoid GUI clients – they add unnecessary overhead on the Deck’s constrained resources.

sudo pacman-key --init sudo pacman-key --populate archlinux sudo pacman -S v2ray

v2ray run -config ~/.config/v2ray/config.json Press Ctrl+C to stop after confirming no errors.

"protocol": "socks", "port": 10808, "settings": "auth": "no", "udp": true , "tag": "socks-in" ,

sudo steamos-readonly disable