我在 2010 年中期的 Macbook Pro（Broadcom 4322 [14e4:433b](rev 01)）上安装了 Ubuntu 18.04.03 LTS，但无法配置 WiFi。我按照这里建议的所有步骤操作，但看不到任何 wifi 网络。我已按照这 没有成功。
注意：这是我妻子的旧 MacBook Pro，我想让它发挥更大的作用。我通过以太网电缆连接。
我从各种命令获得的输出如下：
$ sudo iw reg get
global
country US: DFS-FCC
(2402 - 2472 @ 40), (N/A, 30), (N/A)
(5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW
(5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW
(5490 - 5730 @ 160), (N/A, 23), (0 ms), DFS
(5735 - 5835 @ 80), (N/A, 30), (N/A)
(57240 - 63720 @ 2160), (N/A, 40), (N/A)
$ nmcli dev wifi list
IN-USE SSID MODE CHAN RATE SIGNAL BARS SECURITY
$ lspci -nnk | grep 0280 -A3
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b] (rev 01)
Subsystem: Apple Inc. AirPort Extreme [106b:008d]
Kernel driver in use: wl
Kernel modules: ssb, wl
$ iwconfig
wlp2s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
enp3s0 no wireless extensions.
$ sudo iwlist chan
wlp2s0 32 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 32 : 5.16 GHz
Channel 34 : 5.17 GHz
Channel 36 : 5.18 GHz
Channel 38 : 5.19 GHz
Channel 40 : 5.2 GHz
Channel 42 : 5.21 GHz
Channel 44 : 5.22 GHz
Channel 46 : 5.23 GHz
Channel 48 : 5.24 GHz
Channel 50 : 5.25 GHz
Channel 52 : 5.26 GHz
Channel 54 : 5.27 GHz
Channel 56 : 5.28 GHz
Channel 58 : 5.29 GHz
Channel 60 : 5.3 GHz
Channel 62 : 5.31 GHz
Channel 64 : 5.32 GHz
Channel 66 : 5.33 GHz
Channel 68 : 5.34 GHz
Channel 70 : 5.35 GHz
Channel 72 : 5.36 GHz
lo no frequency information.
enp3s0 no frequency information.
$ rfkill list all
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy1: Wireless LAN
Soft blocked: no
Hard blocked: no
4: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
$ lspci -nnk | grep -e 0200 -e 0280
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b] (rev 01)
03:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM5764M Gigabit Ethernet PCIe [14e4:1684] (rev 10)
编辑1：
不确定这是否有帮助但是：
$ grep -H b43 /etc/modprobe.d/*
/etc/modprobe.d/b43.config:options b43 pio=1
/etc/modprobe.d/blacklist-bcm43.conf:blacklist b43
/etc/modprobe.d/blacklist-bcm43.conf:blacklist b43legacy
/etc/modprobe.d/blacklist.conf:# replaced by b43 and ssb.
编辑2：
我在阅读指南后提出了这个问题。我之前在这里问过：Ubuntu 18.04 WiFi 网络未显示，即使附近有 3 个
如果我应该在 ubuntuforum 上提问，请告诉我。这是来自 Wireless Info Github Ubuntu Forums 的文本文件 无线信息 github 页面的输出
答案1
经过 10 天尝试不同的解决方案后，终于成功了。KiLLeRfriend 在此处发布的帖子解决了我的问题：
https://ubuntuforums.org/showthread.php?t=1745437
我将其复制在这里以供将来参考：
I fixed my problem with the Broadcom bcm4311 drivers on 11.04 (Natty Narwhal)
Steps I took for fixing this problem: (I stole this method from http://ubuntuforums.org/showthread.php?t=1700897[user:nm_geo; post #5])
-open the 'Synaptic Package Manager' and search for 'bcm'
-uninstall the 'bcm-kernel-source' package
-make sure that the 'firmware-b43-installer' and the 'b43-fwcutter' packages are installed
-type into terminal:
[cat /etc/modprobe.d/* | egrep '8180|acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl| lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3 |rt6|rt7|witch|wl']
(you may want to copy this) and see if the term 'blacklist bcm43xx' is there
-if it is, [terminal]cd /etc/modprobe.d/ [and then]sudo gedit blacklist.conf
put a # in front of the line: blacklist bcm43xx
then save the file (I was getting error messages in the terminal about not being able to save, but it actually did save properly)
-reboot
-sudo iw reg set "REGION"
-reboot