我已经在非常旧的 Mac mini 上安装了 Ubuntu 18.04，并且系统无法检测到任何无线网络，即使计算机位于无线路由器旁边。
我所做的；卸载驱动程序并重新安装
sudo apt install bcmwl-kernel-source
我也卸载并尝试了firmware-b43-installer。
我也尝试过使用黑名单，但是没有用。
它也不起作用。我一直在搜索，但找不到可以帮助我的答案。
以下是我的无线信息：
########## wireless info START ##########
Report from: 13 Dec 2018 20:37 +08 +0800
Booted last: 13 Dec 2018 00:00 +08 +0800
Script from: 22 Oct 2018 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
##### kernel ############################
Linux 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=1
##### desktop ###########################
Ubuntu
##### lspci #############################
00:0a.0 Ethernet controller [0200]: NVIDIA Corporation MCP79 Ethernet [10de:0ab0] (rev b1)
Subsystem: NVIDIA Corporation Apple iMac 9,1 [10de:cb79]
Kernel driver in use: forcedeth
03:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4321 802.11a/b/g/n [14e4:4328] (rev 05)
Subsystem: Apple Inc. AirPort Extreme [106b:0090]
Kernel driver in use: wl
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 05ac:8216 Apple, Inc. Bluetooth USB Host Controller
Bus 004 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 003: ID 05ac:8242 Apple, Inc. Built-in IR Receiver
Bus 003 Device 002: ID 045e:0800 Microsoft Corp.
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
##### secure boot #######################
This system doesn't support Secure Boot
##### lsmod #############################
wl 6447104 0
cfg80211 622592 1 wl
##### interfaces ########################
[/etc/network/interfaces]
auto lo
iface lo inet loopback
##### ifconfig ##########################
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback <MAC address> brd <MAC address>
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether <MAC 'enp0s10' [IF1]> brd <MAC address>
inet 10.0.1.13/24 brd 10.0.1.255 scope global dynamic noprefixroute enp0s10
valid_lft 86200sec preferred_lft 86200sec
inet6 fe80::f009:76ae:1e7c:2212/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state DORMANT group default qlen 1000
link/ether <MAC 'wlp3s0' [IF2]> brd <MAC address>
##### iwconfig ##########################
lo no wireless extensions.
enp0s10 no wireless extensions.
wlp3s0 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
##### route #############################
default via 10.0.1.1 dev enp0s10 proto dhcp metric 100
10.0.1.0/24 dev enp0s10 proto kernel scope link src 10.0.1.13 metric 100
169.254.0.0/16 dev enp0s10 scope link metric 1000
##### resolv.conf #######################
[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
nameserver 127.0.0.53
##### network managers ##################
Installed:
NetworkManager
Running:
root 616 1 0 20:34 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp0s10
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: NVIDIA Corporation
GENERAL.PRODUCT: MCP79 Ethernet (Apple iMac 9,1)
GENERAL.DRIVER: forcedeth
GENERAL.DRIVER-VERSION: 0.64
GENERAL.FIRMWARE-VERSION: --
GENERAL.HWADDR: <MAC 'enp0s10' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:0a.0/net/enp0s10
GENERAL.IP-IFACE: enp0s10
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 1
GENERAL.CON-UUID: b5f6eb8f-e933-3ac9-b93b-be753336fc05
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 1000 Mb/s
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: 10.0.1.13/24
IP4.GATEWAY: 10.0.1.1
IP4.ROUTE[1]: dst = 0.0.0.0/0, nh = 10.0.1.1, mt = 100
IP4.ROUTE[2]: dst = 10.0.1.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[3]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 10.0.1.1
DHCP4.OPTION[1]: network_number = 10.0.1.0
DHCP4.OPTION[2]: requested_domain_search = 1
DHCP4.OPTION[3]: requested_host_name = 1
DHCP4.OPTION[4]: requested_time_offset = 1
DHCP4.OPTION[5]: requested_domain_name = 1
DHCP4.OPTION[6]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[7]: requested_broadcast_address = 1
DHCP4.OPTION[8]: broadcast_address = 10.0.1.255
DHCP4.OPTION[9]: requested_wpad = 1
DHCP4.OPTION[10]: requested_netbios_scope = 1
DHCP4.OPTION[11]: next_server = 0.0.0.0
DHCP4.OPTION[12]: expiry = 1544790848
DHCP4.OPTION[13]: dhcp_message_type = 5
DHCP4.OPTION[14]: requested_subnet_mask = 1
DHCP4.OPTION[15]: dhcp_lease_time = 86400
DHCP4.OPTION[16]: ip_address = 10.0.1.13
DHCP4.OPTION[17]: requested_domain_name_servers = 1
DHCP4.OPTION[18]: requested_interface_mtu = 1
DHCP4.OPTION[19]: routers = 10.0.1.1
DHCP4.OPTION[20]: requested_static_routes = 1
DHCP4.OPTION[21]: requested_ntp_servers = 1
DHCP4.OPTION[22]: requested_netbios_name_servers = 1
DHCP4.OPTION[23]: requested_routers = 1
DHCP4.OPTION[24]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[25]: subnet_mask = 255.255.255.0
DHCP4.OPTION[26]: domain_name_servers = 10.0.1.1
DHCP4.OPTION[27]: dhcp_server_identifier = 10.0.1.1
IP6.ADDRESS[1]: fe80::f009:76ae:1e7c:2212/64
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.ROUTE[2]: dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[3]: dst = fe80::/64, nh = ::, mt = 100
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: b5f6eb8f-e933-3ac9-b93b-be753336fc05 | Wired connection 1
GENERAL.DEVICE: wlp3s0
GENERAL.TYPE: wifi
GENERAL.NM-TYPE: NMDeviceWifi
GENERAL.VENDOR: Broadcom Limited
GENERAL.PRODUCT: BCM4321 802.11a/b/g/n (AirPort Extreme)
GENERAL.DRIVER: wl
GENERAL.DRIVER-VERSION: 6.30.223.271 (r587334)
GENERAL.FIRMWARE-VERSION: --
GENERAL.HWADDR: <MAC 'wlp3s0' [IF2]>
GENERAL.MTU: 1500
GENERAL.STATE: 30 (disconnected)
GENERAL.REASON: 42 (The supplicant is now available)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:15.0/0000:03:00.0/net/wlp3s0
GENERAL.IP-IFACE: --
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: no
WIFI-PROPERTIES.ADHOC: yes
WIFI-PROPERTIES.2GHZ: yes
WIFI-PROPERTIES.5GHZ: yes
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --
SSID BSSID MODE CHAN FREQ RATE SIGNAL BARS SECURITY ACTIVE IN-USE
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager config #############
[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 3
[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved
[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:wwan
[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com/
[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-mac-addr-change-wifi]
match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
wifi.cloned-mac-address=preserve
ethernet.cloned-mac-address=preserve
##### NetworkManager profiles ###########
##### Netplan config ####################
[/etc/netplan/01-network-manager-all.yaml]
network:
version: 2
renderer: NetworkManager
##### iw reg get ########################
Region: Asia/Singapore (based on set time zone)
global
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
(5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
lo no frequency information.
enp0s10 no frequency information.
wlp3s0 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 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Channel 14 : 2.484 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
##### iwlist scan #######################
lo Interface doesn't support scanning.
enp0s10 Interface doesn't support scanning.
wlp3s0 No scan results
##### module infos ######################
[wl]
filename: /lib/modules/4.15.0-42-generic/updates/dkms/wl.ko
license: MIXED/Proprietary
srcversion: 00D38A27B7E3C7B97C238FC
depends: cfg80211
retpoline: Y
name: wl
vermagic: 4.15.0-42-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
parm: passivemode:int
parm: wl_txq_thresh:int
parm: oneonly:int
parm: piomode:int
parm: instance_base:int
parm: nompc:int
parm: intf_name:string
[cfg80211]
filename: /lib/modules/4.15.0-42-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 62FD05DCC5AEEA290640C3D
depends:
retpoline: Y
intree: Y
name: cfg80211
vermagic: 4.15.0-42-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
parm: bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist-bcm43.conf]
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
##### rc.local ##########################
grep: /etc/rc.local: No such file or directory
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 24.521772] wlan0: Broadcom BCM4328 802.11 Hybrid Wireless Controller 6.30.223.271 (r587334)
[ 24.524406] wl 0000:03:00.0 wlp3s0: renamed from wlan0
[ 33.324255] IPv6: ADDRCONF(NETDEV_UP): enp0s10: link is not ready
[ 33.324845] forcedeth 0000:00:0a.0 enp0s10: MSI enabled
[ 33.325737] IPv6: ADDRCONF(NETDEV_UP): enp0s10: link is not ready
[ 33.325745] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s10: link becomes ready
[ 33.358689] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready (repeated 2 times)
[ 61.068099] ERROR @wl_notify_scan_status :
[ 61.068102] wlp3s0 Scan_results error (-22)
[ 94.092135] ERROR @wl_notify_scan_status :
[ 94.092138] wlp3s0 Scan_results error (-22)
[ 137.068090] ERROR @wl_notify_scan_status :
[ 137.068094] wlp3s0 Scan_results error (-22)
[ 157.164073] ERROR @wl_notify_scan_status :
[ 157.164076] wlp3s0 Scan_results error (-22)
[ 220.076101] ERROR @wl_notify_scan_status :
[ 220.076104] wlp3s0 Scan_results error (-22)
[ 235.745663] ERROR @wl_dev_intvar_get :
[ 239.820131] ERROR @wl_notify_scan_status :
[ 239.820135] wlp3s0 Scan_results error (-22)
########## wireless info END ############