刚刚安装了 Ubuntu 18.04，但我的 WiFi 适配器 Qualcomm Atheros QCA9565 / AR9565 无线网络适配器不起作用，甚至出现在系统设置中。
lspci -knn 的输出 | grep网-A3：
> rahul@rahul-Inspiron-3542:~$ lspci -knn | grep Net -A3
06:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
Subsystem: Dell QCA9565 / AR9565 Wireless Network Adapter [1028:020c]
Kernel driver in use: ath9k
Kernel modules: ath9k
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
lspci -knn 的输出 | grep网-A2
rahul@rahul-Inspiron-3542:~$ lspci …