I found a workaround: https://github.com/ValveSoftware/steam-for-linux/issues/9966#issuecomment-3569813134
Closing this issue since the root cause seems to be the same as https://github.com/ValveSoftware/steam-for-linux/issues/9966, i.e. Steam adds long delays when it can't connect to NetworkManager's DBus interface.
Your system information
Please describe your issue in as much detail as possible:
After resuming from standby, my wired connection takes a second to come back online.
Steam correctly detects the offline state, but then waits for 20+ seconds before checking the connection status again:
In the meantime I just click "Go Offline..." in the Steam menu and go online again, and get a usable Steam after a few seconds.
This
StartAutoReconnectdelay should either be shortened to 1-2s by default (with backoff), or be configurable.Steps for reproducing this issue:
connection_log.txt