我升级到了 Ubuntu 18.04，现在无法连接到 wifi。如果从系统菜单尝试，我会看到“连接失败 - 激活网络连接失败”。有线连接正常。网络适配器是 Qualcomm Atheros AR9485，但“软件和更新 - 附加驱动程序”中缺少驱动程序。以下是无线信息：
########## wireless info START ##########
Report from: 19 Aug 2018 13:50
Booted last: 19 Aug 2018 00:00
Script from: 10 Jan 2018 20:04 UTC +0000
release
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
kernel
Linux 4.15.0-32-generic #35-Ubuntu SMP Fri Aug 10 17:58:07 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=1
desktop
Ubuntu
lspci
03:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
Subsystem: AzureWave AR9485 Wireless Network Adapter [1a3b:2c97]
Kernel driver in use: ath9k
04:00.2 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0a)
Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:1587]
Kernel driver in use: r8169
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 13d3:5165 IMC Networks
Bus 001 Device 003: ID 13d3:3362 IMC Networks Atheros AR3012 Bluetooth 4.0 Adapter
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 001: ID 1d6b:0002 Linux Foundation 2.0 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
lsmod
asus_nb_wmi 28672 0
asus_wmi 28672 1 asus_nb_wmi
sparse_keymap 16384 1 asus_wmi
wmi_bmof 16384 0
mxm_wmi 16384 0
ath9k 151552 0
ath9k_common 36864 1 ath9k
ath9k_hw 471040 2 ath9k,ath9k_common
ath 28672 3 ath9k_hw,ath9k,ath9k_common
ath3k 20480 0
mac80211 778240 1 ath9k
bluetooth 548864 34 btrtl,btintel,bnep,btbcm,rfcomm,ath3k,btusb
cfg80211 622592 4 mac80211,ath9k,ath,ath9k_common
wmi 24576 3 asus_wmi,wmi_bmof,mxm_wmi
video 45056 2 asus_wmi,i915
interfaces
[/etc/network/interfaces]
auto lo
iface lo inet loopback
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
resolv.conf
nameserver 8.8.8.8
nameserver 127.0.0.53
search Speedport_W_724V_09071602_00_008B
network managers
Installed:
NetworkManager
Running:
root 882 1 0 13:15 ? 00:00:03 /usr/sbin/NetworkManager --no-daemon
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
[ath9k]
filename: /lib/modules/4.15.0-32-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: F4328CE52BA6067DD4EDE7B
depends: mac80211,ath9k_hw,ath9k_common,cfg80211,ath
retpoline: Y
intree: Y
name: ath9k
vermagic: 4.15.0-32-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
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)
parm: use_msi:Use MSI instead of INTx if possible (int)
[ath9k_common]
filename: /lib/modules/4.15.0-32-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: 94213E6B06C24095311E862
depends: ath9k_hw,cfg80211,ath
retpoline: Y
intree: Y
name: ath9k_common
vermagic: 4.15.0-32-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
[ath9k_hw]
filename: /lib/modules/4.15.0-32-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: D5984DFEF6457DDB060988E
depends: ath
retpoline: Y
intree: Y
name: ath9k_hw
vermagic: 4.15.0-32-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
[ath]
filename: /lib/modules/4.15.0-32-generic/kernel/drivers/net/wireless/ath/ath.ko
license: Dual BSD/GPL
description: Shared library for Atheros wireless LAN cards.
author: Atheros Communications
srcversion: 555BBBB9D4FCA58A05E7C0D
depends: cfg80211
retpoline: Y
intree: Y
name: ath
vermagic: 4.15.0-32-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
[ath3k]
filename: /lib/modules/4.15.0-32-generic/kernel/drivers/bluetooth/ath3k.ko
firmware: ath3k-1.fw
license: GPL
version: 1.0
description: Atheros AR30xx firmware driver
author: Atheros Communications
srcversion: 36C0F7AEF3B569F1798216D
depends: bluetooth
retpoline: Y
intree: Y
name: ath3k
vermagic: 4.15.0-32-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
[mac80211]
filename: /lib/modules/4.15.0-32-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 1CEA5CF286EDB289C1D0BF8
depends: cfg80211
retpoline: Y
intree: Y
name: mac80211
vermagic: 4.15.0-32-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
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/4.15.0-32-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: D5B0789D4C423C81CCFB437
depends:
retpoline: Y
intree: Y
name: cfg80211
vermagic: 4.15.0-32-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
[ath9k]
blink: 0
bt_ant_diversity: 0
btcoex_enable: 0
led_active_high: -1
nohwcrypt: 0
ps_enable: 0
use_chanctx: 0
use_msi: 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
coretemp
modprobe options
[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/asus.conf]
options asus_nb_wmi wapf=1
[/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/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
echo 0 > /sys/class/backlight/acpi_video0/brightness
[ -x /usr/bin/numlockx ] && numlockx on
[ -x /usr/bin/numlockx ] && numlockx on
echo 1 > /sys/class/backlight/acpi_video0/brightness
[ -x /usr/bin/numlockx ] && numlockx on
rfkill unblock all
exit 0
pm-utils
udev rules
[/etc/udev/rules.d/70-persistent-net.rules]
PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.2 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth", NAME="eth0"
PCI device 0x168c:/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0 (ath9k)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan", NAME="wlan0"
dmesg
[ 35.228340] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 35.635028] r8169 0000:04:00.2 eth0: link down
[ 35.635112] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 35.652048] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 7 times)
[ 38.421786] r8169 0000:04:00.2 eth0: link up
[ 38.421806] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 39.035824] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 54 times)
#### wireless info END ############答案1
我有华硕 zenbook，无线工作正常。请注意，当您使用 ifconfig -a 时，无线接口可能显示为 wlp2sX 而不是 wlanX。您可以尝试以下操作：
1.获取可用WiFi网络的详细信息：
$ sudo iwlist wlp2sX 扫描
2.添加网络到已知的wifi网络：
编辑文件 /etc/wpa_supplicant/wpa_supplicant.conf：
转到文件底部并添加以下内容：
网络={ ssid="your_ssid" psk="your_password" }
注意！请记住引号 (") 和最后的右括号 (})。
3. 打开 Wifi 接口
$ sudo ifdown wlp2sX; sudo ifup wlp2sX
希望这可以帮助！