未找到 WiFi 适配器 Ubuntu 18.04 Dell Latitude 5400

Question

从早上开始，我的系统就无法检测到无线适配器。我尝试了类似问题中建议的一系列修复方法，但到目前为止，没有一个对我有用。

 sudo lshw -c network
*-network DISABLED        
       description: Wireless interface
       product: QCA6174 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 32
       serial: c0:b5:d7:b3:aa:77
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.15.0-1087-oem firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:138 memory:91000000-911fffff

nmcli device show wlp2s0 
GENERAL.DEVICE:                         wlp2s0
GENERAL.TYPE:                           wifi
GENERAL.HWADDR:                         C0:B5:D7:B3:AA:77
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --

rfkill list
0: dell-wifi: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: dell-bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
3: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

lspci -k | grep -A 4 -i "Network controller"
02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)
    Subsystem: Dell QCA6174 802.11ac Wireless Network Adapter
    Kernel driver in use: ath10k_pci
    Kernel modules: ath10k_pci

cat /etc/netplan/*.yaml
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager

cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

dmesg | grep wlp