my WiFi adapter Qualcomm Atheros QCA9565/AR9565 Wireless Network Adapter.doesn't work or even appear in the system settings.I'm using ubuntu 18.04 with a dual boot with windows 10.the WiFi adapter works in windows. 
output of lspci -knn | grep Net -A3:

```
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
Subsystem: Lite-On Communications Inc QCA9565 / AR9565 Wireless Network Adapter [11ad:0803]
Kernel modules: ath9k

```

lspci -knn | grep Net -A2

```
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
Subsystem: Lite-On Communications Inc QCA9565 / AR9565 Wireless Network Adapter [11ad:0803]
Kernel modules: ath9k

```

sudo rfkill list

```
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no

```

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@0000:02:00.0
   logical name: enp2s0
   version: 15
   serial: 1c:39:47:53:6c:4b
   size: 10Mbit/s
   capacity: 1Gbit/s
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress msix 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=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
   resources: irq:-2147483648 ioport:3000(size=256) memory:c1104000-c1104fff memory:c1100000-c1103fff
 *-network UNCLAIMED
   description: Network controller
   product: QCA9565 / AR9565 Wireless Network Adapter
   vendor: Qualcomm Atheros
   physical id: 0
   bus info: pci@0000:03:00.0
   version: 01
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress cap_list
   configuration: latency=0
   resources: memory:c1000000-c107ffff memory:c1080000-c108ffff
 *-network
   description: Ethernet interface
   physical id: 1
   logical name: enp0s20u1
   serial: 76:f5:dc:14:1d:16
   capabilities: ethernet physical
   configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.239 link=yes multicast=yes

```

dmesg | grep ath9k

```
[   21.252360] ath9k 0000:03:00.0: PCI INT A: not connected
[   21.252404] ath9k 0000:03:00.0: request_irq failed
[   21.252423] ath9k: probe of 0000:03:00.0 failed with error -107

```