Having trouble with multiplayer 12/18/2022

[AdamN]

Socket error 101 on Linux/Android = Network is unreachable, probably you are using a different IP on the pro-adhoc server IP address settings (all players need to use the same value, make sure none of the player use localhost/127.0.0.1 as it's only used for multiple instance on the same device), if you have a Terminal app (ie. Termux on Android), try to ping the pro-adhoc server IP and your brother's IP to see whether they're reachable or not, also ask your brother to do the same too with your IP.

Socket error 110 on Linux/Android = Timed Out (might also be related to unreachable network), probably the port are not opened yet or being blocked (may be using ports < 1024 which requires sudo/admin privileges, using Port Offset higher than 1024 might help), if it was blocked by external factors (ie. firewall, router, or ISP) nothing much can be done from within PPSSPP other than using UPnP (only when supported by your router)