我已经拥有一台 Ubuntu 14.04 机器五年了。最近，我搬家了，不得不通过以太网连接一段时间。然后，Ubuntu 突然无法识别任何网络。请注意这台机器具有 Windows 双启动功能，并且 Windows 中的 Wifi 运行正常。
我的问题的目的是找出问题所在。我将发布任何需要的信息来找出问题所在。我自己已经尝试了很多指南，现在我不知道从哪里开始。
以下是收集有关我的系统信息的命令的输出：
########## wireless info START ##########
Report from: 11 Nov 2018 14:24 CET +0100
Booted last: 11 Nov 2018 14:04 CET +0100
Script from: 22 Oct 2018 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 4.4.0-138-generic #164~14.04.1-Ubuntu SMP Fri Oct 5 08:56:16 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
02:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
Subsystem: Lite-On Communications Inc Device [11ad:0612]
Kernel driver in use: ath9k
03:00.0 Ethernet controller [0200]: Qualcomm Atheros QCA8172 Fast Ethernet [1969:10a0] (rev 10)
Subsystem: Toshiba America Info Systems Device [1179:fa30]
Kernel driver in use: alx
##### lsusb #############################
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 04f2:b3b1 Chicony Electronics Co., Ltd
Bus 001 Device 003: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 006: ID 0930:0220 Toshiba Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: Toshiba Bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### secure boot #######################
'mokutil' is not installed (package "mokutil").
##### lsmod #############################
ath3k 20480 0
bluetooth 520192 26 bnep,ath3k,btbcm,btrtl,btusb,rfcomm,btintel
ath9k 143360 0
ath9k_common 36864 1 ath9k
ath9k_hw 479232 2 ath9k_common,ath9k
toshiba_wmi 16384 0
ath 32768 3 ath9k_common,ath9k,ath9k_hw
mac80211 733184 1 ath9k
cfg80211 561152 4 ath,ath9k_common,ath9k,mac80211
sparse_keymap 16384 2 toshiba_wmi,toshiba_acpi
wmi 20480 2 toshiba_wmi,toshiba_acpi
##### 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 1
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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether <MAC 'eth0' [IF1]> brd <MAC address>
inet 192.168.1.109/24 brd 192.168.1.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fd22:eaf3:5c5c::f79/128 scope global
valid_lft forever preferred_lft forever
inet6 fd22:eaf3:5c5c:0:4d68:3a21:f149:5aa0/64 scope global temporary dynamic
valid_lft 604125sec preferred_lft 85125sec
inet6 fd22:eaf3:5c5c:0:<IP6 'eth0' [IF1]>/64 scope global dynamic
valid_lft forever preferred_lft forever
inet6 fe80::<IP6 'eth0' [IF1]>/64 scope link
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether <MAC 'wlan0' [IF2]> brd <MAC address>
##### iwconfig ##########################
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
##### route #############################
default via 192.168.1.1 dev eth0 proto static
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.109 metric 1
##### resolv.conf #######################
[777 root ‘/etc/resolv.conf’ -> ‘../run/resolvconf/resolv.conf’]
nameserver 127.0.1.1
search lan
##### network managers ##################
Installed:
NetworkManager
Running:
root 4468 1 0 14:13 ? 00:00:00 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: connected (global)
- Device: <MAC address> ----------------------------------------------------
Type: Bluetooth
Driver: bluez
State: disconnected
Default: no
Capabilities:
- Device: eth0 [Cableada automática] -----------------------------------------
Type: Wired
Driver: alx
State: connected
Default: yes
HW Address: <MAC 'eth0' [IF1]>
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.1.109
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
IPv6 Settings:
Address: fd22:eaf3:5c5c::f79
Prefix: 128
Gateway: ::
Address: fd22:eaf3:5c5c:0:4d68:3a21:f149:5aa0
Prefix: 64
Gateway: ::
Address: fd22:eaf3:5c5c:0:<IP6 'eth0' [IF1]>
Prefix: 64
Gateway: ::
Address: fe80::<IP6 'eth0' [IF1]>
Prefix: 64
Gateway: ::
DNS: fd22:eaf3:5c5c::1
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: ath9k
State: unmanaged
Default: no
HW Address: <MAC 'wlan0' [IF2]>
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager config #############
[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=<MAC 'eth0' [IF1]>,
[ifupdown]
managed=true
[keyfile]
unmanaged-devices=mac:<MAC 'wlan0' [IF2]>
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/MASMOVIL_jywa]] (600 root)
[connection] id=MASMOVIL_jywa | type=802-11-wireless
[802-11-wireless] ssid=MASMOVIL_jywa | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/claudia~]] (600 root)
[connection] id=claudia | type=802-11-wireless
[802-11-wireless] ssid=claudia | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/EXE_WIFI]] (600 root)
[connection] id=EXE_WIFI | type=802-11-wireless
[802-11-wireless] ssid=EXE_WIFI | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/Senderos]] (600 root)
[connection] id=Senderos | type=802-11-wireless
[802-11-wireless] ssid=Senderos | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Sunrise_2.4GHz_3C9B50]] (600 root)
[connection] id=Sunrise_2.4GHz_3C9B50 | type=802-11-wireless
[802-11-wireless] ssid=Sunrise_2.4GHz_3C9B50 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Swisscom]] (600 root)
[connection] id=Swisscom | type=802-11-wireless
[802-11-wireless] ssid=Swisscom | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/MOVISTAR_D810]] (600 root)
[connection] id=MOVISTAR_D810 | type=802-11-wireless
[802-11-wireless] ssid=MOVISTAR_D810 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Telekom]] (600 root)
[connection] id=Telekom | type=802-11-wireless
[802-11-wireless] ssid=Telekom | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/JAZZTEL_Jzng]] (600 root)
[connection] id=JAZZTEL_Jzng | type=802-11-wireless
[802-11-wireless] ssid=JAZZTEL_Jzng | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Airport_Free_WiFi_AENA]] (600 root)
[connection] id=Airport_Free_WiFi_AENA | type=802-11-wireless
[802-11-wireless] ssid=Airport_Free_WiFi_AENA | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/Conexion]] (600 root)
[connection] id=Conexion | type=802-11-wireless
[802-11-wireless] ssid=LARA-WIFI
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/case Wifi(ssid: String) =>]] (600 root)
[connection] id=case Wifi(ssid: String) => | type=802-11-wireless
[802-11-wireless] ssid=case Wifi(ssid: String) => | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/kubi]] (600 root)
[connection] id=kubi | type=802-11-wireless
[802-11-wireless] ssid=kubi | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/public-epfl]] (600 root)
[connection] id=public-epfl | type=802-11-wireless | autoconnect=false
[802-11-wireless] ssid=public-epfl | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/GSGWIFI]] (600 root)
[connection] id=GSGWIFI | type=802-11-wireless
[802-11-wireless] ssid=GSGWIFI | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/MOVISTAR_5640]] (600 root)
[connection] id=MOVISTAR_5640 | type=802-11-wireless
[802-11-wireless] ssid=MOVISTAR_5640 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/IML ]] (600 root)
[connection] id=IML | type=802-11-wireless
[802-11-wireless] ssid=IML | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/_AUTO_ONOWiFi]] (600 root)
[ipv6] method=auto
[connection] id=_AUTO_ONOWiFi | type=802-11-wireless
[802-11-wireless] ssid=_AUTO_ONOWiFi | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/WIFIALSA]] (600 root)
[connection] id=WIFIALSA | type=802-11-wireless
[802-11-wireless] ssid=WIFIALSA | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/DOMO]] (600 root)
[connection] id=DOMO | type=802-11-wireless
[802-11-wireless] ssid=DOMO | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/CITEU-Residents]] (600 root)
[connection] id=CITEU-Residents | type=802-11-wireless
[802-11-wireless] ssid=CITEU-Residents | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/JIMA2]] (600 root)
[connection] id=JIMA2 | type=802-11-wireless
[802-11-wireless] ssid=JIMA2 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Mismenet - Jose]] (600 root)
[connection] id=Mismenet - Jose | type=802-11-wireless
[802-11-wireless] ssid=Mismenet - Jose | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/grus]] (600 root)
[connection] id=grus | type=802-11-wireless
[802-11-wireless] ssid=grus | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/MASMOVIL_DHgM]] (600 root)
[connection] id=MASMOVIL_DHgM | type=802-11-wireless
[802-11-wireless] ssid=MASMOVIL_DHgM | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/CITEU-Visitors]] (600 root)
[connection] id=CITEU-Visitors | type=802-11-wireless
[802-11-wireless] ssid=CITEU-Visitors | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/Orange-0dc8]] (600 root)
[connection] id=Orange-0dc8 | type=802-11-wireless
[802-11-wireless] ssid=Orange-0dc8 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Sunrise_2.4GHz_27D400]] (600 root)
[connection] id=Sunrise_2.4GHz_27D400 | type=802-11-wireless
[802-11-wireless] ssid=Sunrise_2.4GHz_27D400 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/epfl]] (600 root)
[ipv6] method=auto
[connection] id=epfl | type=802-11-wireless
[802-11-wireless] ssid=epfl | mac-address=<MAC 'wlan0' [IF2]>
[802-1x] ca-cert=/etc/ssl/certs/thawte_Primary_Root_CA.pem
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/freewifi-epfl]] (600 root)
[connection] id=freewifi-epfl | type=802-11-wireless
[802-11-wireless] ssid=freewifi-epfl | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/MONZOON]] (600 root)
[connection] id=MONZOON | type=802-11-wireless
[802-11-wireless] ssid=MONZOON | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/MOVISTAR_83D0]] (600 root)
[connection] id=MOVISTAR_83D0 | type=802-11-wireless
[802-11-wireless] ssid=MOVISTAR_83D0 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/MOVISTAR_2A76]] (600 root)
[connection] id=MOVISTAR_2A76 | type=802-11-wireless
[802-11-wireless] ssid=MOVISTAR_2A76 | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/ALSA PREMIUM]] (600 root)
[connection] id=ALSA PREMIUM | type=802-11-wireless
[802-11-wireless] ssid=ALSA PREMIUM | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/claudia]] (600 root)
[connection] id=claudia | type=802-11-wireless
[802-11-wireless] ssid=claudia | mac-address=<MAC 'wlan0' [IF2]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/cviugr]] (600 root)
[connection] id=cviugr | type=802-11-wireless | permissions=user:usuario:; | autoconnect=false
[802-11-wireless] ssid=cviugr | mac-address=<MAC 'wlan0' [IF2]>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/eduroam]] (600 root)
[connection] id=eduroam | type=802-11-wireless | permissions=user:usuario:; | autoconnect=false
[802-11-wireless] ssid=eduroam
[ipv4] method=auto
[ipv6] method=auto
[802-1x] ca-cert=/home/usuario/.cat_installer/ca.pem
##### Netplan config ####################
##### iw reg get ########################
Region: Europe/Madrid (based on set time zone)
country 00:
(2402 - 2472 @ 40), (3, 20)
(2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
##### iwlist channels ###################
lo no frequency information.
eth0 no frequency information.
wlan0 13 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
##### iwlist scan #######################
lo Interface doesn't support scanning.
wlan0 Interface doesn't support scanning : Network is down
eth0 Interface doesn't support scanning.
##### module infos ######################
[ath3k]
filename: /lib/modules/4.4.0-138-generic/kernel/drivers/bluetooth/ath3k.ko
firmware: ath3k-1.fw
license: GPL
version: 1.0
description: Atheros AR30xx firmware driver
author: Atheros Communications
srcversion: AC2C693C639F7A0981097A7
depends: bluetooth
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
[ath9k]
filename: /lib/modules/4.4.0-138-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko
license: Dual BSD/GPL
description: Support for Atheros 802.11n wireless LAN cards.
author: Atheros Communications
srcversion: D578DE67B7E1EB3760B717B
depends: mac80211,ath9k_hw,ath9k_common,cfg80211,ath
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
parm: debug:Debugging mask (uint)
parm: nohwcrypt:Disable hardware encryption (int)
parm: blink:Enable LED blink on activity (int)
parm: led_active_high:Invert LED polarity (int)
parm: btcoex_enable:Enable wifi-BT coexistence (int)
parm: bt_ant_diversity:Enable WLAN/BT RX antenna diversity (int)
parm: ps_enable:Enable WLAN PowerSave (int)
parm: use_chanctx:Enable channel context for concurrency (int)
[ath9k_common]
filename: /lib/modules/4.4.0-138-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
license: Dual BSD/GPL
description: Shared library for Atheros wireless 802.11n LAN cards.
author: Atheros Communications
srcversion: 5E13CACC8C4252BB4B57367
depends: ath9k_hw,cfg80211,ath
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
[ath9k_hw]
filename: /lib/modules/4.4.0-138-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
license: Dual BSD/GPL
description: Support for Atheros 802.11n wireless LAN cards.
author: Atheros Communications
srcversion: 0ABA5B381F76029EC68B97E
depends: ath
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
[ath]
filename: /lib/modules/4.4.0-138-generic/kernel/drivers/net/wireless/ath/ath.ko
license: Dual BSD/GPL
description: Shared library for Atheros wireless LAN cards.
author: Atheros Communications
srcversion: 45AB6427635D8FAD0CF48E6
depends: cfg80211
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
[mac80211]
filename: /lib/modules/4.4.0-138-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 12876CD014B88DBC2461E53
depends: cfg80211
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[cfg80211]
filename: /lib/modules/4.4.0-138-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 512570CCFE6B901E551DC5B
depends:
retpoline: Y
intree: Y
vermagic: 4.4.0-138-generic SMP mod_unload modversions retpoline
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 #################
[ath9k]
blink: 0
bt_ant_diversity: 0
btcoex_enable: 0
led_active_high: -1
nohwcrypt: 0
ps_enable: 0
use_chanctx: 0
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500
[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
rtc
coretemp
ath9k
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/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/hp.conf]
blacklist hp_wmi
[/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
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
[/etc/modprobe.d/modesetting.conf]
options cirrus modeset=1
options mgag200 modeset=1
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x1969:0x10a0 (alx)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF1]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x168c:0x0036 (ath9k)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF2]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
# USB device 0x:0x (mt7601u)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan1"
##### dmesg #############################
[ 28.540944] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 159.595944] alx 0000:03:00.0 eth0: NIC Up: 100 Mbps Full
[ 159.596579] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 292.372371] alx 0000:03:00.0 eth0: Link Down
[ 377.201912] alx 0000:03:00.0 eth0: NIC Up: 100 Mbps Full
[ 481.160781] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 481.161586] alx 0000:03:00.0 eth0: NIC Up: 100 Mbps Full
[ 481.161858] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 564.297741] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 564.298560] alx 0000:03:00.0 eth0: NIC Up: 100 Mbps Full
[ 564.298831] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
########## wireless info END ############
[1]: https://help.ubuntu.com/stable/ubuntu-help/net-wireless-troubleshooting-hardware-check.html.en
[2]: https://help.ubuntu.com/community/WifiDocs/WirelessCardsSupported
答案1
我们在您的扫描结果中看到了这一点：
wlan0 接口不支持扫描：网络已关闭
可能是因为 /etc/NetworkManager/NetworkManager.conf 中有这个：
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=<MAC 'eth0' [IF1]>,
[ifupdown]
managed=true
[keyfile]
unmanaged-devices=mac:<MAC 'wlan0' [IF2]>
换句话说，您已要求网络管理员不是管理无线。让我们备份相关文件，然后修改它。从终端：
sudo cp /etc/NetworkManager/NetworkManager.conf ~/NetworkManager.conf.old
sudo nano /etc/NetworkManager/NetworkManager.conf
彻底删除以下几行：
[keyfile]
unmanaged-devices=mac:<MAC 'wlan0' [IF2]>
笔记：您发布的诊断报告所来自的无线脚本出于安全原因设计为编辑 MAC 地址。因此，您的实际行将使用实际 MAC 地址代替上面的编辑版本。无论它读什么，请将其删除。
仔细校对，保存并关闭 nano。重新启动网络管理器：
sudo service network-manager restart
可能需要重新启动。