Macbook5,2--无法连接到WiFi(18.04.4)

Macbook5,2--无法连接到WiFi(18.04.4)

我刚刚在旧 Macbook 上安装了 Ubuntu,但无法连接 WiFi。附近的网络确实出现了,但当我尝试连接任何网络时,都会收到错误消息“连接失败 - 激活网络连接失败”。

lspci显示:

02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4321 802.11a/b/g/n [14e4:4328] (rev 03)

iwconfig显示:

wls4      IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on

lo        no wireless extensions.

ens5      no wireless extensions.

我按照这里的说明进行操作(安装 Broadcam 无线驱动程序) 卸载并重新安装该bcmwl-kernel-source包,但没有成功。

我知道这个问题已经被问了很多次了,但是在搜索了以前的问题/答案之后,我不确定还能尝试什么。

谢谢你!

编辑:

lspci -knn | grep Net -A3; rfkill list显示:

02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4321 802.11a/b/g/n [14e4:4328] (rev03)
        Subsystem: Apple Inc. AirPort Extreme [106b:0088]
        Kernel driver in use: wl
        Kernel modules: ssb, wl
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: brcmwl-0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
2: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no

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