Estive pesquisando o dia todo para tentar resolver isso, mas nada está funcionando.
Depois de executar uma atualização de rotina por meio do gerenciador de atualização, a conectividade Wi-Fi parou de funcionar no meu laptop HP 255. O principal sintoma é que o WiFi Networks está desabilitado no menu de rede e só consigo me conectar à Internet com um cabo ethernet.
Aqui estão as saídas de vários comandos que tentei diagnosticar o problema:
$ iwconfig
lo no wireless extensions.
eno1 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
eth0 no wireless extensions.
$ ifconfig -a
eno1 Link encap:Ethernet HWaddr 54:35:30:a7:2b:63
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth0 Link encap:Ethernet HWaddr a0:1d:48:fc:1d:2f
inet addr:192.168.0.5 Bcast:192.168.0.255
Mask:255.255.255.0
inet6 addr: fe80::991a:70d:b995:7347/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:126167 errors:0 dropped:0 overruns:0 frame:0
TX packets:109008 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:81268300 (81.2 MB) TX bytes:31161949 (31.1 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:3199 errors:0 dropped:0 overruns:0 frame:0
TX packets:3199 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:191487 (191.4 KB) TX bytes:191487 (191.4 KB)
$ nmcli device show eno1
GENERAL.DEVICE: eno1
GENERAL.TYPE: wifi
GENERAL.HWADDR: 54:35:30:A7:2B:63
GENERAL.MTU: 0
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
IP4.GATEWAY:
IP6.GATEWAY:
$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether a0:1d:48:fc:1d:2f brd ff:ff:ff:ff:ff:ff
inet 192.168.0.5/24 brd 192.168.0.255 scope global dynamic eth0
valid_lft 76590sec preferred_lft 76590sec
inet6 fe80::991a:70d:b995:7347/64 scope link
valid_lft forever preferred_lft forever
3: eno1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 54:35:30:a7:2b:63 brd ff:ff:ff:ff:ff:ff
$ sudo lshw -C network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth0
version: 07
serial: a0:1d:48:fc:1d:2f
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list
ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd
autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.0.5 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
resources: irq:26 ioport:2000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff
*-network DISABLED
description: Wireless interface
product: RT3290 Wireless 802.11n 1T/1R PCIe
vendor: Ralink corp.
physical id: 0
bus info: pci@0000:07:00.0
logical name: eno1
version: 00
serial: 54:35:30:a7:2b:63
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt2800pci driverversion=4.4.0-97-generic firmware=0.37 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:f0210000-f021ffff
Finalmente, se eu tentar trazer a rede com o ifup, obtenho
# ifup eno1
Internet Systems Consortium DHCP Client 4.3.3
Copyright 2004-2015 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
RTNETLINK answers: Input/output error
Listening on LPF/eno1/54:35:30:a7:2b:63
Sending on LPF/eno1/54:35:30:a7:2b:63
Sending on Socket/fallback
DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 3 (xid=0xc4ded42f)
send_packet: Network is down
dhclient.c:2098: Failed to send 300 byte long packet over eno1 interface.
receive_packet failed on eno1: Network is down
DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 7 (xid=0xc4ded42f)
send_packet: Network is down
dhclient.c:2098: Failed to send 300 byte long packet over eno1 interface.
DHCPDISCOVER on eno1 to 255.255.255.255 port 67 interval 11 (xid=0xc4ded42f)
send_packet: Network is down
...
com as últimas 3 linhas repetindo até eu matar o processo.
Por favor, alguém pode me dizer o que eu sinto falta?