Your computer
Loading
Confirm the app pair: Decky on the source Mac, Decky Display on the receiving device. Keep both open and awake, and note the error text before retrying.
Step by step
- Confirm the app pair: Decky on the source Mac, Decky Display on the receiving device. Keep both open and awake, and note the error text before retrying.
- For USB, try a known data cable directly in another Mac port. Unlock Android and check its accessory prompt. Charging alone is not a data test.
- For a network connection, check the same local network, Network on in Decky’s Settings → Connection and Let devices find this Mac in Security. Check VPN or guest-network isolation and any custom port on both ends.
- Confirm the app pair: Decky on the PC, its icon in the notification area and switched on, and Decky Display on the receiving device. Keep both open and awake, and note the error text before retrying.
- For USB, use a supported Samsung Galaxy, Xiaomi or POCO device and try a known data cable directly in another PC port. Unlock Android, check its accessory prompt, and read the Direct USB status in Settings → Connection.
- For a network connection, check the same local network, Network on in Settings → Connection, and Let devices find this PC in Security. Windows must list the network as a Private network. Check VPN or guest-network isolation, Windows Firewall and any custom port on both ends.
What to know
A listed device may be connected without being in use. Complete pairing and choose Use as display. A rejected code or pending approval needs the pairing guide, not a different resolution setting.
A listed device may be connected without showing a picture. Complete pairing, then choose Extend or Mirror for it in Decky’s Devices card.
If it does not work
Restart both apps, then reconnect using one connection type at a time. If it persists, email the device model, OS and app versions, connection type, error and which of these checks changed the result.