我最近在 lenovo yoga 2（不是 pro）上安装了 ubuntu 18.04，但似乎无法打开 wifi。wifi 设置中显示
**No wifi adapter found
make sure you have wifi adapter pluged in.**
wifi 在 Windows 10 上运行良好，并且我已经检查了 BIOS 它也已启用。提前感谢大家的帮助。我已附加来自我的 wireless-info.txt 文件的信息。
########## wireless info START ##########
Report from: 03 Mar 2019 01:40 PKT +0500
Booted last: 03 Mar 2019 00:00 PKT +0500
Script from: 22 Oct 2018 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
##### kernel ############################
Linux 4.18.0-15-generic #16~18.04.1-Ubuntu SMP Thu Feb 7 14:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=1
##### desktop ###########################
Ubuntu
##### lspci #############################
01:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Lenovo BCM4352 802.11ac Wireless Network Adapter [17aa:0623]
Kernel modules: bcma, wl
##### lsusb #############################
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 007: ID 048d:8350 Integrated Technology Express, Inc.
Bus 002 Device 006: ID 0489:e07a Foxconn / Hon Hai
Bus 002 Device 005: ID 04f2:b40f Chicony Electronics Co., Ltd
Bus 002 Device 004: ID 04f3:0303 Elan Microelectronics Corp.
Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 002 Device 002: ID 0489:c022 Foxconn / Hon Hai
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### secure boot #######################
SecureBoot enabled
##### lsmod #############################
cfg80211 667648 0
ideapad_laptop 32768 0
sparse_keymap 16384 1 ideapad_laptop
wmi 24576 1 ideapad_laptop
video 45056 2 ideapad_laptop,i915
##### 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: enp0s20u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
link/ether <MAC 'enp0s20u1' [IF1]> brd <MAC address>
inet 192.168.42.27/24 brd 192.168.42.255 scope global dynamic noprefixroute enp0s20u1
valid_lft 2179sec preferred_lft 2179sec
inet6 fe80::fe14:b94d:8d1c:5821/64 scope link noprefixroute
valid_lft forever preferred_lft forever
##### iwconfig ##########################
lo no wireless extensions.
enp0s20u1 no wireless extensions.
##### route #############################
default via 192.168.42.129 dev enp0s20u1 proto dhcp metric 100
169.254.0.0/16 dev enp0s20u1 scope link metric 1000
192.168.42.0/24 dev enp0s20u1 proto kernel scope link src 192.168.42.27 metric 100
##### resolv.conf #######################
[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
nameserver 127.0.0.53
options edns0
##### network managers ##################
Installed:
NetworkManager
Running:
root 690 1 0 01:16 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp0s20u1
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: HMD Global
GENERAL.PRODUCT: Nokia 6.1 Plus
GENERAL.DRIVER: rndis_host
GENERAL.DRIVER-VERSION: 22-Aug-2005
GENERAL.FIRMWARE-VERSION: RNDIS device
GENERAL.HWADDR: <MAC 'enp0s20u1' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1:1.0/net/enp0s20u1
GENERAL.IP-IFACE: enp0s20u1
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: 2b31f589-069d-3749-8baa-d6d34db117f7
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED: yes (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: 192.168.42.27/24
IP4.GATEWAY: 192.168.42.129
IP4.ROUTE[1]: dst = 0.0.0.0/0, nh = 192.168.42.129, mt = 100
IP4.ROUTE[2]: dst = 192.168.42.0/24, 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]: 192.168.42.129
DHCP4.OPTION[1]: dhcp_rebinding_time = 3150
DHCP4.OPTION[2]: requested_domain_search = 1
DHCP4.OPTION[3]: vendor_encapsulated_options = ANDROID_METERED
DHCP4.OPTION[4]: network_number = 192.168.42.0
DHCP4.OPTION[5]: requested_broadcast_address = 1
DHCP4.OPTION[6]: requested_domain_name = 1
DHCP4.OPTION[7]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[8]: requested_time_offset = 1
DHCP4.OPTION[9]: requested_wpad = 1
DHCP4.OPTION[10]: expiry = 1551561396
DHCP4.OPTION[11]: next_server = 192.168.42.129
DHCP4.OPTION[12]: broadcast_address = 192.168.42.255
DHCP4.OPTION[13]: dhcp_message_type = 5
DHCP4.OPTION[14]: requested_subnet_mask = 1
DHCP4.OPTION[15]: dhcp_lease_time = 3600
DHCP4.OPTION[16]: ip_address = 192.168.42.27
DHCP4.OPTION[17]: requested_static_routes = 1
DHCP4.OPTION[18]: requested_domain_name_servers = 1
DHCP4.OPTION[19]: dhcp_renewal_time = 1800
DHCP4.OPTION[20]: routers = 192.168.42.129
DHCP4.OPTION[21]: requested_netbios_scope = 1
DHCP4.OPTION[22]: domain_name_servers = 192.168.42.129
DHCP4.OPTION[23]: requested_ntp_servers = 1
DHCP4.OPTION[24]: requested_netbios_name_servers = 1
DHCP4.OPTION[25]: requested_routers = 1
DHCP4.OPTION[26]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[27]: requested_interface_mtu = 1
DHCP4.OPTION[28]: requested_host_name = 1
DHCP4.OPTION[29]: dhcp_server_identifier = 192.168.42.129
DHCP4.OPTION[30]: subnet_mask = 255.255.255.0
IP6.ADDRESS[1]: fe80::fe14:b94d:8d1c:5821/64
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]: 2b31f589-069d-3749-8baa-d6d34db117f7 | Wired connection 1
##### 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/Karachi (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.
enp0s20u1 no frequency information.
##### iwlist scan #######################
lo Interface doesn't support scanning.
enp0s20u1 Interface doesn't support scanning.
##### module infos ######################
[cfg80211]
filename: /lib/modules/4.18.0-15-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: BFB309EF7C6C321F605D36E
depends:
retpoline: Y
intree: Y
name: cfg80211
vermagic: 4.18.0-15-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 i2c_i801
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 #############################
[ 4.994588] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0489-e07a.hcd failed with error -2
[ 4.994592] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0489-e07a.hcd not found
[ 5.053852] rndis_host 2-1:1.0 enp0s20u1: renamed from usb0
[ 5.718092] IPv6: ADDRCONF(NETDEV_UP): enp0s20u1: link is not ready
########## wireless info END ############
答案1
在 BIOS 中禁用安全启动。
##### lspci #############################
01:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Lenovo BCM4352 802.11ac Wireless Network Adapter [17aa:0623]
Kernel modules: bcma, wl
这说明内核模块安装正确bcmwl-kernel-source，wl但是没有加载。
##### secure boot #######################
SecureBoot enabled
由于安全启动，它未加载。您可以通过运行来检查它
sudo modprobe wl
你可以看看这个问题更多细节。