我有一台 MacBook Air（2015 年，型号 A1465）。芯片组是 BCM4360：
*-network
description: Wireless interface
product: BCM4360 802.11ac Wireless Network Adapter
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 03
serial: 98:e0:d9:7e:d9:ab
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) ip=192.168.0.6 latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:18 memory:c1200000-c1207fff memory:c1000000-c11fffff
我使用 rEFInd 启动 Ubuntu 18.04，安装过程中没有问题，除了没有 wifi。我设置了热点并安装了 broadcom-sta-dkms 驱动程序。一切顺利，当我重新启动时 wifi 就可以使用了。
当我重新启动机器时，wifi 就丢失了。
我下载了 broadcom 软件包：broadcom-sta-dkms_6.30.223.271-8_all.deb并运行：
sudo apt install --reinstall broadcom-sta-dkms
得到以下输出：
sudo apt install --reinstall broadcom-sta-dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 68 not upgraded.
Need to get 0 B/2,204 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 211030 files and directories currently installed.)
Preparing to unpack .../broadcom-sta-dkms_6.30.223.271-8_all.deb ...
-------- Uninstall Beginning --------
Module: broadcom-sta
Version: 6.30.223.271
Kernel: 4.15.1-041501-generic (x86_64)
-------------------------------------
Status: Before uninstall, this module version was ACTIVE on this kernel.
wl.ko:
- Uninstallation
- Deleting from: /lib/modules/4.15.1-041501-generic/updates/dkms/
- Original module
- No original module was found for this module on this kernel.
- Use the dkms install command to reinstall any previous module version.
depmod...
Backing up initrd.img-4.15.1-041501-generic to /boot/initrd.img-4.15.1-041501-generic.old-dkms
Making new initrd.img-4.15.1-041501-generic
(If next boot fails, revert to initrd.img-4.15.1-041501-generic.old-dkms image)
update-initramfs........
DKMS: uninstall completed.
------------------------------
Deleting module version: 6.30.223.271
completely from the DKMS tree.
------------------------------
Done.
Unpacking broadcom-sta-dkms (6.30.223.271-8) over (6.30.223.271-8) ...
Setting up broadcom-sta-dkms (6.30.223.271-8) ...
Loading new broadcom-sta-6.30.223.271 DKMS files...
Building for 4.15.1-041501-generic
Building initial module for 4.15.1-041501-generic
This system does't support Secure Boot
Secure Boot not enabled on this system.
Done.
wl:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/4.15.1-041501-generic/updates/dkms/
depmod...
Backing up initrd.img-4.15.1-041501-generic to /boot/initrd.img-4.15.1-041501-generic.old-dkms
Making new initrd.img-4.15.1-041501-generic
(If next boot fails, revert to initrd.img-4.15.1-041501-generic.old-dkms image)
update-initramfs.......
DKMS: install completed.
rEFInd 默认尝试启动到.old-dkms映像。因此我进入单用户模式并从新启动initrd.img-4.15.1-041501-generic。
wifi 又能用了，直到我重启。然后这个循环就重复了！！
我尝试了很多方法，包括将可能造成干扰的所有其他驱动程序/软件包列入黑名单，但都不起作用。这是我目前拥有的列表/etc/modprobe.d/blacklist.conf：
blacklist b43
blacklist b43legacy
blacklist b44
blacklist bcma
blacklist brcm80211
blacklist brcmsmac
blacklist ssb
blacklist b43-fwcutter
blacklist bcm43
blacklist bcm43xx
blacklist ndiswrapper
正在执行：
sudo modprobe wl
没什么区别
之前也曾有人问过类似的问题，但并没有真正解决我的具体问题
- 如何离线安装 Broadcom 无线驱动程序？
- 如何在 MacBook Air 上的 Ubuntu 上手动安装 Broadcom BCM4360 驱动程序
- Ubuntu 14.04 丢失 Wi-Fi 连接
TL;DR：每次重启后我都会失去 wifi。我该怎么办？
答案1
这对我有用。
wget http://mirrors.kernel.org/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb
sudo dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb