Reproduced on bq 4.5, OTA13. I created two APs with SSID "Ubuntu", same
password, same authentication. I connected to one of them:
phablet@ubuntu-phablet:~$ nmcli d wifi
* SSID MODE CHAN RATE SIGNAL BARS SECURITY
Ubuntu Infra 1 54 Mbit/s 100 **** WPA2
* Ubuntu Infra 11 54 Mbit/s 91 **** WPA2
phablet@ubuntu-phablet:~$ ifconfig wlan0
wlan0 Link encap:Ethernet direcciónHW b8:64:91:47:21:b6
Direc. inet:192.168.43.189 Difus.:192.168.43.255 Másc:255.255.255.0
...
Then I removed the AP in channel 11. After waiting for some minutes to
make sure we had re-scanned:
phablet@ubuntu-phablet:~$ nmcli d wifi
* SSID MODE CHAN RATE SIGNAL BARS SECURITY
* Ubuntu Infra 1 54 Mbit/s 88 **** WPA2
It looks like the connection has moved to the other Ubuntu AP, but ping
does not work, and the interface address has not changed:
phablet@ubuntu-phablet:~$ ifconfig wlan0
wlan0 Link encap:Ethernet direcciónHW b8:64:91:47:21:b6
Direc. inet:192.168.43.189 Difus.:192.168.43.255 Másc:255.255.255.0
...
Apparently the IP configuration has not completed properly. I was able
to return to a working state by doing
phablet@ubuntu-phablet:~$ nmcli d wifi connect Ubuntu
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https://bugs.launchpad.net/bugs/1478319
Title:
Wifi doesn't reconnect to AP if it uses the same SSID than another AP
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