I have a laptop HP Pavilion dv6 which I upgraded from 14.04 to 16.04, now the wifi network does not work.
Currently the wireless button (F12) is lit blue so it looks like normal, but I cannot enable wifi nor I can scan networks.
This used to work well with 14.04.
I have performed the following checkings but I am completely lost.
Check the connection:
$ nmcli dev
DISPOSITIVO TIPO ESTADO CONEXIÓN
eth0 ethernet conectado Wired connection 1
58:55:CA:E6:8C:D0 bt desconectado --
wlan0 wifi no disponible --
lo loopback sin gestión --
Check the wireless adapter is recognized:
$ sudo lshw -C network
*-network DESACTIVADO
descripción: Interfaz inalámbrica
producto: Centrino Wireless-N 2230
fabricante: Intel Corporation
id físico: 0
información del bus: pci@0000:0a:00.0
nombre lógico: wlan0
versión: c4
serie: 68:5d:43:0e:80:35
anchura: 64 bits
reloj: 33MHz
capacidades: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuración: broadcast=yes driver=iwlwifi driverversion=4.4.0-34-generic firmware=18.168.6.1 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
recursos: irq:31 memoria:d4500000-d4501fff
*-network
descripción: Ethernet interface
producto: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
fabricante: Realtek Semiconductor Co., Ltd.
id físico: 0
información del bus: pci@0000:0b:00.0
nombre lógico: eth0
versión: 07
serie: 08:2e:5f:73:2a:4f
tamaño: 1Gbit/s
capacidad: 1Gbit/s
anchura: 64 bits
reloj: 33MHz
capacidades: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuración: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=10.93.0.163 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
recursos: irq:27 ioport:2000(size=256) memoria:d4404000-d4404fff memoria:d4400000-d4403fff
Check the state of wireless devices:
$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: yes
2: hp-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: yes
3: hp-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: yes
4: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
Check driver when loading:
$ dmesg | grep iwlwifi
[ 23.776926] iwlwifi 0000:0a:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 24.119427] iwlwifi 0000:0a:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[ 24.544331] iwlwifi 0000:0a:00.0: CONFIG_IWLWIFI_DEBUG disabled
[ 24.544337] iwlwifi 0000:0a:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[ 24.544340] iwlwifi 0000:0a:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[ 24.544344] iwlwifi 0000:0a:00.0: Detected Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
[ 24.544455] iwlwifi 0000:0a:00.0: L1 Enabled - LTR Disabled
[ 24.551979] iwlwifi 0000:0a:00.0: RF_KILL bit toggled to disable radio.
[ 25.210759] iwlwifi 0000:0a:00.0: RF_KILL bit toggled to enable radio.
Update file /etc/default/crda to set the correct region code:
REGDOMAIN=ES
