The BRAVIA does not reliably reconnect to WiFi after a cold boot or reboot. WiFi connection manager toggles between “Connecting…”, “Saved”, “Not in range”, “Optaining IP address “, “Connected, no Internet” (with Auto-IP) and “Disabled” states. Several manual connection attempts are necessary. Many attempts fail with "couldn't find network", "couldn't connect to network" or "WiFi network didn't accept connection". In the BRAVIA system log, there are lots of ASSOC_REJECT errors:
The network gets deactivated after several attempts. It looks like the Wi-Fi access point (a FRITZ!Repeater 1750E in this case) is rejecting the connection. However, other devices connect without any problem.
The problem seems to be much more severe after power-cycling the router/WiFi access point. It takes minutes for the BRAVIA to reconnect. There seems to be a settling process which takes some days after which connection on a cold boot becomes more stable. Same is true for #68. All other devices on the WiFi instantly connect and make use of the full channel bandwidth at any time.
What has been tried to mitigate the problem:
switch off all other clients
disable auto-channel
separate 2.4GHz and 5GHz networks
check for interference with a spectrum analyzer
Connection seems to be reliably be established after standby/deep sleep.
The BRAVIA does not reliably reconnect to WiFi after a cold boot or reboot. WiFi connection manager toggles between “Connecting…”, “Saved”, “Not in range”, “Optaining IP address “, “Connected, no Internet” (with Auto-IP) and “Disabled” states. Several manual connection attempts are necessary. Many attempts fail with "couldn't find network", "couldn't connect to network" or "WiFi network didn't accept connection". In the BRAVIA system log, there are lots of
ASSOC_REJECTerrors:The network gets deactivated after several attempts. It looks like the Wi-Fi access point (a FRITZ!Repeater 1750E in this case) is rejecting the connection. However, other devices connect without any problem.
The problem seems to be much more severe after power-cycling the router/WiFi access point. It takes minutes for the BRAVIA to reconnect. There seems to be a settling process which takes some days after which connection on a cold boot becomes more stable. Same is true for #68. All other devices on the WiFi instantly connect and make use of the full channel bandwidth at any time.
What has been tried to mitigate the problem:
Connection seems to be reliably be established after standby/deep sleep.