我在使用 Ubuntu 14.04 的 Lenovo Flex 3 1480 笔记本电脑连接 wifi 时遇到了困难。它在 Windows 上运行良好。我附上了从以下位置获取的 wireless-info.txt： http://ubuntuforums.org/showthread.php?t=370108
########## wireless info START ##########
Report from: 25 Jan 2016 13:52 MST -0700
Booted last: 25 Jan 2016 13:47 MST -0700
Script from: 27 Sep 2015 00:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
sed: can't read /root/.dmrc: No such file or directory
Could not be determined.
##### lspci #############################
02:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0042] (rev 30)
Subsystem: Lenovo Device [17aa:4035]
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Subsystem: Lenovo Device [17aa:3835]
Kernel driver in use: r8169
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0cf3:e360 Atheros Communications, Inc.
Bus 001 Device 004: ID 04f3:2083 Elan Microelectronics Corp.
Bus 001 Device 003: ID 5986:0670 Acer, Inc
Bus 001 Device 002: ID 046d:c535 Logitech, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### lsmod #############################
mac80211 638976 0
cfg80211 532480 1 mac80211
compat 28672 2 cfg80211,mac80211
ideapad_laptop 24576 0
sparse_keymap 16384 1 ideapad_laptop
wmi 20480 0
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr
inet addr:10.218.104.240 Bcast:10.218.111.255 Mask:255.255.248.0
inet6 addr: fe80::/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8295 errors:0 dropped:0 overruns:0 frame:0
TX packets:1212 errors:0 dropped:25 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1871640 (1.8 MB) TX bytes:156822 (156.8 KB)
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.218.104.1 0.0.0.0 UG 0 0 0 eth0
10.218.104.0 0.0.0.0 255.255.248.0 U 1 0 0 eth0
##### resolv.conf #######################
nameserver 127.0.1.1
search cidse.dhcp.asu.edu
##### network managers ##################
Installed:
NetworkManager
Running:
root 1017 1 0 13:47 ? 00:00:00 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: connected (global)
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: r8169
State: connected
Default: yes
HW Address:
Capabilities:
Carrier Detect: yes
Speed: 1000 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 10.218.104.240
Prefix: 21 (255.255.248.0)
Gateway: 10.218.104.1
DNS: 129.219.17.200
DNS: 129.219.17.5
DNS: 129.219.13.81
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/Wi-Fi connection 1]] (600 root)
[connection] id=Wi-Fi connection 1 | type=802-11-wireless
[802-11-wireless] ssid=asu
[ipv6] method=auto
[ipv4] method=auto
##### iw reg get ########################
Region: America/Phoenix (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 ###################
eth0 no frequency information.
lo no frequency information.
##### iwlist scan #######################
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
[mac80211]
filename: /lib/modules/3.19.0-49-generic/updates/dkms/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
version: backported from () using backports
srcversion: BEF453E7AC487F911F8EDBF
depends: cfg80211,compat
vermagic: 3.19.0-49-generic SMP mod_unload modversions
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/3.19.0-49-generic/updates/dkms/cfg80211.ko
version: backported from () using backports
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: F6775E4370E54D5795E4BE2
depends: compat
vermagic: 3.19.0-49-generic SMP mod_unload modversions
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 #################
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
probe_wait_ms: 500
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
rtc
##### modprobe options ##################
[/etc/modprobe.d/ath10k_core.conf]
options ath10k_core skip_otp=y
[/etc/modprobe.d/ath10k-dkms.conf]
options ath10k_core skip_otp=1
[/etc/modprobe.d/ath9k.conf]
options ath9k nohwcrypt=1
[/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/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
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
##### dmesg #############################
[ 13.723430] wl: module license 'MIXED/Proprietary' taints kernel.
[ 13.725722] wl: disagrees about version of symbol wiphy_new_nm
[ 13.725723] wl: Unknown symbol wiphy_new_nm (err -22)
[ 13.725736] wl: disagrees about version of symbol wiphy_register
[ 13.725737] wl: Unknown symbol wiphy_register (err -22)
[ 13.725783] wl: disagrees about version of symbol wiphy_unregister
[ 13.725784] wl: Unknown symbol wiphy_unregister (err -22)
[ 13.725798] wl: disagrees about version of symbol __ieee80211_get_channel
[ 13.725799] wl: Unknown symbol __ieee80211_get_channel (err -22)
[ 13.725832] wl: disagrees about version of symbol wiphy_free
[ 13.725833] wl: Unknown symbol wiphy_free (err -22)
[ 14.123327] ath: disagrees about version of symbol wiphy_apply_custom_regulatory
[ 14.123331] ath: Unknown symbol wiphy_apply_custom_regulatory (err -22)
[ 14.123338] ath: disagrees about version of symbol __ieee80211_get_channel
[ 14.123339] ath: Unknown symbol __ieee80211_get_channel (err -22)
[ 14.123346] ath: disagrees about version of symbol freq_reg_info
[ 14.123347] ath: Unknown symbol freq_reg_info (err -22)
[ 21.831480] r8169 0000:03:00.0 eth0: link down
[ 21.831527] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 26.392468] r8169 0000:03:00.0 eth0: link up
[ 26.392477] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 51.394064] r8169 0000:03:00.0 eth0: link down (repeated 2 times)
[ 120.582163] r8169 0000:03:00.0 eth0: link up
########## wireless info END ############
请说明为什么我收到“网络无人认领”信息。我尝试了以下操作，但没有任何积极的结果。以太网工作正常。
https://askubuntu.com/a/708103/497674 https://askubuntu.com/a/481221/497674
编辑 1：添加 dkms 状态
root@ankita-Flex-3-1480:/home/ankita# dkms status
backath10k, 2.0, 3.13.0-77-generic, x86_64: installed
backath10k, 2.0, 3.19.0-47-generic, x86_64: installed
backath10k, 2.0, 3.19.0-49-generic, x86_64: installed
bcmwl, 6.30.223.248+bdcom, 3.13.0-77-generic, x86_64: installed
bcmwl, 6.30.223.248+bdcom, 3.19.0-47-generic, x86_64: installed
bcmwl, 6.30.223.248+bdcom, 3.19.0-49-generic, x86_64: installed
root@ankita-Flex-3-1480:/home/ankita# sudo apt-get remove bcmwl-kernel-source broadcom-sta-common broadcom-sta-dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package broadcom-sta-common
E: Unable to locate package broadcom-sta-dkms
提前致谢
答案1
首先，我建议您删除不正确且可能存在冲突的驱动程序。在终端：
sudo apt-get purge bcmwl-kernel-source
重启然后运行：
sudo modprobe ath10k_pci && dmesg | grep ath
发布结果，并根据结果进一步编辑我的答案以提出解决方案。
您提供的第一个链接是正确的方法；但是，编译过程似乎出了问题。让我们看看是否可以修复它：
cd backports-20151120
make clean
make defconfig-wifi
make
sudo make install
sudo modprobe ath10k_pci
有什么改进吗？如果没有，请重启并再次发布：
dmesg | grep ath
答案2
这个解决了我的问题
sudo aptitude install linux-image-extra-4.4.0-43-generic
- 您可能想在安装时检查哪个是最新版本。（尝试输入直到“image-extra-”并使用带制表符的自动完成功能来查找最新版本）
- 我的硬件：联想 x201 上的英特尔 wifi“Centrino Ultimate-N 6300”
答案3
这个问题已通过 Jeremy31 在问题中发表的评论得到解决。
跑步：
sudo dkms remove backath10k/2.0 --all
然后重新启动。
答案4
我已经使用下面的方法上传了已安装的操作系统Settings-> About This Computer -> Details -> Overview -> Install Update
此选项将自动执行必要的更新并解决所有问题
