sudo steamos-readonly disable
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. steam deck v2ray
v2ray run -config ~/.config/v2ray/config.json Press Ctrl+C to stop after confirming no errors. sudo steamos-readonly disable The most reliable approach for