Onde trabalho temos vários WiFi's com frequências diferentes. Muitas vezes fico desconectado e preciso reconectar manualmente. Quando isso aconteceu novamente, eu verifiquei
journalctl
e obteve a seguinte saída:
Nov 04 17:13:22 foo kernel: wlo1: Limiting TX power to 20 (20 - 0) dBm as advertised by 00:24:a8:98:08:40
Nov 04 17:13:22 foo NetworkManager[292]: <info> [1478276002.0335] device (wlo1): supplicant interface state: authenticating -> completed
Nov 04 17:13:22 foo wpa_supplicant[347]: wlo1: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Nov 04 17:13:22 foo kernel: IPv6: ADDRCONF(NETDEV_CHANGE): wlo1: link becomes ready
Nov 04 17:13:22 foo kernel: wlo1: associated
Nov 04 17:13:22 foo kernel: wlo1: RX AssocResp from 00:24:a8:98:08:40 (capab=0x801 status=0 aid=6)
Nov 04 17:13:22 foo wpa_supplicant[347]: wlo1: CTRL-EVENT-CONNECTED - Connection to 00:24:a8:98:08:40 completed [id=0 id_str=]
Nov 04 17:13:22 foo wpa_supplicant[347]: wlo1: Associated with 00:24:a8:98:08:40
Nov 04 17:13:22 foo kernel: wlo1: associate with 00:24:a8:98:08:40 (try 1/3)
Nov 04 17:13:22 foo kernel: wlo1: authenticated
Nov 04 17:13:22 foo wpa_supplicant[347]: wlo1: Trying to associate with 00:24:a8:98:08:40 (SSID='BAR' freq=5180 MHz)
Nov 04 17:13:22 foo kernel: wlo1: send auth to 00:24:a8:98:08:40 (try 1/3)
Nov 04 17:13:22 foo NetworkManager[292]: <info> [1478276002.0224] device (wlo1): supplicant interface state: scanning -> authenticating
Nov 04 17:13:22 foo kernel: wlo1: authenticate with 00:24:a8:98:08:40
Nov 04 17:13:22 foo wpa_supplicant[347]: wlo1: SME: Trying to authenticate with 00:24:a8:98:08:40 (SSID='BAR' freq=5180 MHz)
Nov 04 17:13:21 foo NetworkManager[292]: <info> [1478276001.9020] device (wlo1): supplicant interface state: disconnected -> scanning
Nov 04 17:13:21 foo kernel: IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
Nov 04 17:13:21 foo dhclient[10311]: receive_packet failed on wlo1: Network is down
Nov 04 17:13:21 foo NetworkManager[292]: <info> [1478276001.7420] device (wlo1): supplicant interface state: associating -> disconnected
Nov 04 17:13:21 foo wpa_supplicant[347]: wlo1: SME: Deauth request to the driver failed
Nov 04 17:13:21 foo wpa_supplicant[347]: wlo1: CTRL-EVENT-ASSOC-REJECT bssid=00:24:a8:a7:90:50 status_code=17
Nov 04 17:13:21 foo NetworkManager[292]: <info> [1478276001.7021] device (wlo1): supplicant interface state: authenticating -> associating
Nov 04 17:13:21 foo kernel: wlo1: 00:24:a8:a7:90:50 denied association (code=17)
Nov 04 17:13:21 foo kernel: wlo1: RX AssocResp from 00:24:a8:a7:90:50 (capab=0x421 status=17 aid=0)
Nov 04 17:13:21 foo kernel: wlo1: associate with 00:24:a8:a7:90:50 (try 1/3)
Nov 04 17:13:21 foo kernel: iwlwifi 0000:02:00.0 wlo1: disabling VHT as WMM/QoS is not supported by the AP
Nov 04 17:13:21 foo kernel: iwlwifi 0000:02:00.0 wlo1: disabling HT as WMM/QoS is not supported by the AP
Nov 04 17:13:21 foo kernel: wlo1: authenticated
Nov 04 17:13:21 foo wpa_supplicant[347]: wlo1: Trying to associate with 00:24:a8:a7:90:50 (SSID='BAR' freq=2412 MHz)
Nov 04 17:13:21 foo NetworkManager[292]: <info> [1478276001.6877] device (wlo1): supplicant interface state: completed -> authenticating
Nov 04 17:13:21 foo kernel: wlo1: send auth to 00:24:a8:a7:90:50 (try 1/3)
Nov 04 17:13:21 foo kernel: wlo1: authenticate with 00:24:a8:a7:90:50
Nov 04 17:13:21 foo kernel: wlo1: disconnect from AP 00:24:a8:98:08:40 for new auth to 00:24:a8:a7:90:50
Nov 04 17:13:21 foo wpa_supplicant[347]: wlo1: SME: Trying to authenticate with 00:24:a8:a7:90:50 (SSID='BAR' freq=2412 MHz)
O que acho que poderia ser interessante é que a frequência muda. Isso poderia ser um problema? Como isso pode ser consertado?
Eu uso nmclipara me conectar a Wifi. Posso me conectar a um Wifi dado seu SSID. Posso conectar-me a um Wifi em um canal específico, de modo que, quando me reconectar, não seja apenas reconectado ao Wifi com o mesmo SSID, mas também com a mesma frequência?
Editar: eu percebo que hápoderser uma correlação entre um número variável de pessoas que usam o mesmo Wifi e eu sendo desconectado. Em outras palavras, acho que quando as pessoas vêm com seus laptops, aumentam as chances de me desconectar. Se as pessoas não se moverem, minha conexão será relativamente estável. Isso faz sentido?