Eu instalei recentemente o xubuntu 18.04 e descobri que não consigo me conectar ao meu wifi em casa. Ele apenas tenta se conectar a ele por cerca de 30 segundos e, em seguida, eu tenho um ícone "sem conexão". Aqui estão os logs do NetworkManager
NetworkManager[686]: <info> [1528639424.2342] device (wlp2s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
NetworkManager[686]: <info> [1528639424.2357] manager: NetworkManager state is now CONNECTING
NetworkManager[686]: <info> [1528639424.2377] device (wlp2s0): Activation: (wifi) access point 'homenet' has security, but secrets are required.
NetworkManager[686]: <info> [1528639424.2378] device (wlp2s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
NetworkManager[686]: <info> [1528639424.2379] sup-iface[0x56540a716c30,wlp2s0]: wps: type pbc start...
NetworkManager[686]: <info> [1528639424.2464] device (wlp2s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
NetworkManager[686]: <info> [1528639424.2471] device (wlp2s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
NetworkManager[686]: <info> [1528639424.2476] device (wlp2s0): Activation: (wifi) connection 'homenet' has security, and secrets exist. No new secrets needed.
NetworkManager[686]: <info> [1528639424.2479] Config: added 'ssid' value 'homenet'
NetworkManager[686]: <info> [1528639424.2481] Config: added 'scan_ssid' value '1'
NetworkManager[686]: <info> [1528639424.2483] Config: added 'bgscan' value 'simple:30:-80:86400'
NetworkManager[686]: <info> [1528639424.2485] Config: added 'key_mgmt' value 'WPA-PSK'
NetworkManager[686]: <info> [1528639424.2486] Config: added 'psk' value '<hidden>'
NetworkManager[686]: <info> [1528639425.2723] device (wlp2s0): supplicant interface state: disconnected -> scanning
NetworkManager[686]: <info> [1528639426.2276] device (wlp2s0): supplicant interface state: scanning -> authenticating
NetworkManager[686]: <info> [1528639426.2361] device (wlp2s0): supplicant interface state: authenticating -> associating
NetworkManager[686]: <info> [1528639426.2484] device (wlp2s0): supplicant interface state: associating -> associated
NetworkManager[686]: <info> [1528639426.2558] device (wlp2s0): supplicant interface state: associated -> completed
NetworkManager[686]: <info> [1528639426.2558] device (wlp2s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'homenet'.
NetworkManager[686]: <info> [1528639426.2560] device (wlp2s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
NetworkManager[686]: <info> [1528639426.2566] dhcp4 (wlp2s0): activation: beginning transaction (timeout in 45 seconds)
NetworkManager[686]: <info> [1528639426.2588] dhcp4 (wlp2s0): dhclient started with pid 16067
dhclient[16067]: DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 3 (xid=0x19e65231)
dhclient[16067]: DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 8 (xid=0x19e65231)
dhclient[16067]: DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 20 (xid=0x19e65231)
dhclient[16067]: DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 15 (xid=0x19e65231)
NetworkManager[686]: <warn> [1528639471.7478] dhcp4 (wlp2s0): request timed out
NetworkManager[686]: <info> [1528639471.7478] dhcp4 (wlp2s0): state changed unknown -> timeout
NetworkManager[686]: <info> [1528639471.7802] dhcp4 (wlp2s0): canceled DHCP transaction, DHCP client pid 16067
NetworkManager[686]: <info> [1528639471.7803] dhcp4 (wlp2s0): state changed timeout -> done
NetworkManager[686]: <info> [1528639471.7808] device (wlp2s0): state change: ip-config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')
NetworkManager[686]: <info> [1528639471.7815] manager: NetworkManager state is now DISCONNECTED
NetworkManager[686]: <warn> [1528639471.7827] device (wlp2s0): Activation: failed for connection 'homenet'
Eu não tive problemas com esta rede antes de ter instalado o xubuntu (eu estava rodando o windows antes) e ainda não há problemas quando eu conecto minha rede doméstica com outros dispositivos. Além disso, não tenho problemas com a conexão com outras redes. Qualquer apoio é muito apreciado