Se for um tempo limite, provavelmente é o fim deles. Verifique com o gerenciamento para ver se eles têm algum requisito especial para se conectar.
Eu recentemente mudei para um local com wifi público (para que eu não tenha acesso ao roteador ou a configuração DHCP deles) e estou com problemas para se conectar ao meu laptop Arch.
Eu tentei usar o NetworkManager e o netctl para conectar, mas ambos falharam ao obter uma concessão de DHCP. Deve-se notar que todos os outros dispositivos (telefones Android e iOS, laptops Windows e MacOS) o fazem sem problemas.
Como faço para depurar isso? Estou perdendo um pacote ou estou me conectando errado?
Eu uso nmcli para conectar:
$ nmcli dev wifi
* SSID MODE CHAN RATE SIGNAL BARS SECURITY
ssidOfWifi Infra 1 54 Mbit/s 52 ▂▄__ WPA2
ssidOfWifi Infra 13 54 Mbit/s 34 ▂▄__ WPA2
ssidOfWifi Infra 13 54 Mbit/s 22 ▂___ WPA2
$ nmcli dev wifi connect ssidOfWifi password passwordToWifi
Error: Connection activation failed: (5) IP configuration could not be reserved (no available address, timeout, etc.).
$ systemctl status NetworkManager
...
Jan 09 17:49:43 home NetworkManager[5621]: <info> [1483980583.9385] device (wlp2s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'ssidOfWifi'.
Jan 09 17:49:43 home NetworkManager[5621]: <info> [1483980583.9386] device (wlp2s0): state change: config -> ip-config (reason 'none') [50 70 0]
Jan 09 17:49:43 home NetworkManager[5621]: <info> [1483980583.9390] dhcp4 (wlp2s0): activation: beginning transaction (timeout in 45 seconds)
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0055] dhcp4 (wlp2s0): state changed unknown -> timeout
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0214] dhcp4 (wlp2s0): canceled DHCP transaction
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0215] dhcp4 (wlp2s0): state changed timeout -> done
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0220] device (wlp2s0): state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0223] manager: NetworkManager state is now DISCONNECTED
Jan 09 17:50:29 home NetworkManager[5621]: <warn> [1483980629.0233] device (wlp2s0): Activation: failed for connection 'ssidOfWifi'
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0319] device (wlp2s0): state change: failed -> disconnected (reason 'none') [120 30 0]
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0421] device (wlp2s0): set-hw-addr: set MAC address to AA:BB:CC:DD:EE:FF (scanning)
Jan 09 17:50:29 home NetworkManager[5621]: <warn> [1483980629.0453] sup-iface[0x1d5ec00,wlp2s0]: connection disconnected (reason -3)
Jan 09 17:50:29 home NetworkManager[5621]: <info> [1483980629.0454] device (wlp2s0): supplicant interface state: completed -> disconnected
Eu uso wifi-menu -o para conectar. Isso mostra apenas um "ssidOfWifi", diferente de nmcli , que mostra um para cada ponto de acesso.
$ sudo wifi-menu -o
Job for netctl@wlp2s0\x2dssidOfWifi.service failed because the control process exited with error code.
See "systemctl status "netctl@wlp2s0\x2dssidOfNetwork.service"" and "journalctl -xe" for details.
$ journalctl -xe
...
Jan 09 23:10:34 home dhcpcd[14402]: wlp2s0: soliciting a DHCP lease
Jan 09 23:11:03 home dhcpcd[14402]: timed out
Jan 09 23:11:03 home dhcpcd[14402]: dhcpcd exited
Jan 09 23:11:03 home network[14363]: DHCP IPv4 lease attempt failed on interface 'wlp2s0'
Jan 09 23:11:03 home kernel: wlp2s0: deauthenticating from AA:BB:CC:DD:EE:FF by local choice (Reason: 3=DEAUTH_LEAVING)
Jan 09 23:11:03 home network[14363]: Failed to bring the network up for profile 'wlp2s0-ssidOfWifi'
Jan 09 23:11:03 home systemd[1]: netctl@wlp2s0\x2dssidOfWifi.service: Main process exited, code=exited, status=1/FAILURE
Se for um tempo limite, provavelmente é o fim deles. Verifique com o gerenciamento para ver se eles têm algum requisito especial para se conectar.
Tags dhcp wifi networkmanager netctl