我有带 KDE plasma 的 Ubuntu 22.04。我想连接到 5 Ghz Wifi 网络，但它不会显示在可用网络列表中。我的 Windows 笔记本电脑可以从同一位置顺利连接。
输出sudo lshw -C network：
*-network
description: Wireless interface
product: RTL8821CE 802.11ac PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:09:00.0
logical name: wlp9s0
version: 00
serial: 90:e8:68:7b:3d:ad
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8821ce driverversion=6.5.0-26-generic latency=0 multicast=yes wireless=unassociated
resources: irq:123 ioport:e000(size=256) memory:fc600000-fc60ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:0a:00.0
logical name: enp10s0
version: 15
serial: 58:11:22:b2:70:c3
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.052.01-NAPI duplex=full ip=192.168.68.62 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:35 ioport:d000(size=256) memory:fc504000-fc504fff memory:fc500000-fc503fff
我尝试安装这个司机用于我的主板的 PCIe 网络适配器，但没有帮助。
我也尝试启动另一个驱动器（也是 Ubuntu），但它仍然没有出现。运行nmcli dev wifi也不起作用。
任何帮助都值得感激！