Qualcomm Atheros AR9462 with Ubuntu 18.10

I can't enable the Wifi (nothing happens when press enable button) and in Wifi settings it says:

"No Wi-Fi Adapter Found"

I have tried several things from other questions/answers here but nothing worked. Here some information if this is helpful for the answer:

Device: Lenovo Miix 2 11

sudo lspci:

Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01)

sudo lshw -C network:

*-network DISABLED description: Wireless interface product: AR9462 Wireless Network Adapter vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:02:00.0 logical name: wlp2s0 version: 01 serial: 48:d2:24:8a:ea:e6 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=4.18.0-16-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11 resources: irq:18 memory:f0400000-f047ffff memory:f0480000-f048ffff

sudo lsmod | grep ath:

ath3k 20480 0
bluetooth 548864 12 btrtl,btintel,btbcm,bnep,ath3k,btusb
ath9k 151552 0
ath9k_common 36864 1 ath9k
ath9k_hw 475136 2 ath9k_common,ath9k
ath 36864 3 ath9k_common,ath9k,ath9k_hw
mac80211 794624 1 ath9k
cfg80211 663552 5 wl,ath9k_common,ath9k,ath,mac80211

In system settings it shows the Wifi-Adapter Name:

Qualcomm Atheros AR9462

Edit:

lspci -knn | grep Net -A3; rfkill list:

02:00.0 Network controller [0280]: Qualcomm Atheros AR9462 Wireless Network Adapter [168c:0034] (rev 01)
Subsystem: Lenovo AR9462 Wireless Network Adapter [17aa:3214]
Kernel driver in use: ath9k
Kernel modules: ath9k, wl
0: phy0: Wireless LAN Soft blocked: no Hard blocked: no
1: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: yes
2: ideapad_bluetooth: Bluetooth Soft blocked: yes Hard blocked: yes

1 Answer

Your wireless adapter is blocked by rfkill.

You can fix it by running

sudo tee /etc/modprobe.d/blacklist-ideapad.conf <<< "blacklist ideapad_laptop"

Reboot to apply.

You can always revert this blacklist by

sudo rm /etc/modprobe.d/blacklist-ideapad.conf