昨晚更新系统（至 21.10）后，我的 wifi 连接断开了。系统 GUI 只显示蓝牙和一些看起来像 wifi 的东西，但很可能是蓝牙（见屏幕截图）。单击它只会显示“连接失败”消息。rfkill list all仅列出蓝牙设备：
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
lshw 级网络
*-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: 10
serial: f8:75:a4:cc:0a:ec
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.11.0-40-generic duplex=full firmware=rtl8168g-3_0.0.1 04/23/13 ip=192.168.0.123 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:48 ioport:3000(size=256) memory:d0904000-d0904fff memory:d0900000-d0903fff
我怎样才能恢复连接？