我刚刚安装了 Lubuntu 22.04.3 LTS (Jammy Jellyfish)。我只能通过电缆上网。
我寻找过 wifi-radar 但是它似乎不存在于 Lubuntu 中。
我找到了 wifi-qr 但它不起作用：错误：_zbar_video_open() 中的 zbar 处理器：系统错误：打开视频设备“/dev/video0”：没有此文件或目录 (2)（什么视频？我并没有试图观看视频。）
我尝试了网络管理器，但输入 nm-applet 没有任何反应。
输入 sudo nm-applet 会显示“(nm-applet:45014): Gdk-CRITICAL **: 17:11:07.459: gdk_window_thaw_toplevel_updates: 断言‘window->update_and_descendants_freeze_count > 0’失败”，然后什么都没有。
我安装了 gnome-system-tools，但输入“gnome-system-tools”时显示“未找到命令”。无论前面有没有“sudo”。
“ls /sys/class/net” 仅找到 eth0 和 lo。但这台电脑在安装之前就有无线网了……
命令行参数：
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS480/RS482/RS485 Host Bridge (rev 10)
00:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RC4xx/RS4xx PCI Bridge [int gfx]
00:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RC4xx/RS4xx PCI Express Port 2
00:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RC4xx/RS4xx PCI Express Port 3
00:12.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 Non-Raid-5 SATA
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI0)
00:13.1 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI1)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI2)
00:13.3 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI3)
00:13.4 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB (OHCI4)
00:13.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB600 USB Controller (EHCI)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (rev 14)
00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] SB600 IDE
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB600 PCI to LPC Bridge
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS482/RS485 [Radeon Xpress 1100/1150]
05:00.0 Network controller: Broadcom Inc. and subsidiaries BCM4311 802.11b/g WLAN (rev 01)
08:00.0 Ethernet controller: Broadcom Inc. and subsidiaries BCM4401-B0 100Base-TX (rev 02)
08:01.0 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
08:01.1 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
请问我该怎么办？