![无线适配器 Realtek [0bda:818b] 问题 - 以前有时可以连接，现在根本无法连接](https://linux22.com/image/988294/%E6%97%A0%E7%BA%BF%E9%80%82%E9%85%8D%E5%99%A8%20Realtek%20%5B0bda%3A818b%5D%20%E9%97%AE%E9%A2%98%20-%20%E4%BB%A5%E5%89%8D%E6%9C%89%E6%97%B6%E5%8F%AF%E4%BB%A5%E8%BF%9E%E6%8E%A5%EF%BC%8C%E7%8E%B0%E5%9C%A8%E6%A0%B9%E6%9C%AC%E6%97%A0%E6%B3%95%E8%BF%9E%E6%8E%A5.png)
我无法无线连接。我正在使用无线 USB 适配器。
感谢[这个线程][1]，我可以轻松地提供以下诊断信息：
########## wireless info START ##########
Report from: 03 Mar 2016 12:30 CET +0100
Booted last: 03 Mar 2016 12:23 CET +0100
Script from: 27 Sep 2015 00:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.4 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.13.0-62-generic #102-Ubuntu SMP Tue Aug 11 14:29:36 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash
##### desktop ###########################
Ubuntu
##### lspci #############################
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
Subsystem: ASUSTeK Computer Inc. Device [1043:8554]
Kernel driver in use: r8169
##### lsusb #############################
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 002: ID 045e:0780 Microsoft Corp.
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
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 004: ID 05e3:0723 Genesys Logic, Inc. GL827L SD/MMC/MS Flash Card Reader
Bus 003 Device 003: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse
Bus 003 Device 002: ID 0bda:818b Realtek Semiconductor Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
##### lsmod #############################
cfg80211 484040 0
eeepc_wmi 13151 0
asus_wmi 24191 1 eeepc_wmi
sparse_keymap 13948 1 asus_wmi
video 19476 1 asus_wmi
wmi 19177 1 asus_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
docker0 Link encap:Ethernet HWaddr <MAC 'docker0' [IF]>
inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
inet addr:10.42.0.86 Bcast:10.42.0.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'eth0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8567 errors:0 dropped:0 overruns:0 frame:0
TX packets:6222 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8016298 (8.0 MB) TX bytes:1343942 (1.3 MB)
lxcbr0 Link encap:Ethernet HWaddr <MAC 'lxcbr0' [IF]>
inet addr:10.0.3.1 Bcast:10.0.3.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'lxcbr0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:97 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:14169 (14.1 KB)
vmnet1 Link encap:Ethernet HWaddr <MAC 'vmnet1' [IF]>
inet addr:192.168.6.1 Bcast:192.168.6.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'vmnet1' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:97 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vmnet8 Link encap:Ethernet HWaddr <MAC 'vmnet8' [IF]>
inet addr:172.16.198.1 Bcast:172.16.198.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'vmnet8' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:98 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
##### iwconfig ##########################
vmnet8 no wireless extensions.
eth0 no wireless extensions.
lo no wireless extensions.
lxcbr0 no wireless extensions.
vmnet1 no wireless extensions.
docker0 no wireless extensions.
wlan0 unassociated Nickname:"<WIFI@REALTEK>"
Mode:Managed Frequency=2.412 GHz Access Point: Not-Associated
Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.42.0.1 0.0.0.0 UG 0 0 0 eth0
10.0.3.0 0.0.0.0 255.255.255.0 U 0 0 0 lxcbr0
10.42.0.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
172.16.198.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
192.168.6.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 1022 1 0 12:23 ? 00:00:00 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: connected (global)
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: rtl8192eu
State: disconnected
Default: no
HW Address: <MAC 'wlan0' [IF]>
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
MovieStarPlanet_2_4: Infra, <MAC 'MovieStarPlanet_2_4' [AN1]>, Freq 2412 MHz, Rate 16 Mb/s, Strength 100 WPA2
MSP: Infra, <MAC 'MSP' [AN2]>, Freq 2412 MHz, Rate 16 Mb/s, Strength 90 WPA2
Copenhagen2: Infra, <MAC 'Copenhagen2' [AN3]>, Freq 2417 MHz, Rate 16 Mb/s, Strength 60 WPA2
Magick: Infra, <MAC 'Magick' [AN4]>, Freq 2412 MHz, Rate 16 Mb/s, Strength 100 WPA WPA2
Orbit Guest: Infra, <MAC 'Orbit Guest' [AN5]>, Freq 2412 MHz, Rate 16 Mb/s, Strength 69 WPA2
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: r8169
State: connected
Default: yes
HW Address: <MAC 'eth0' [IF]>
Capabilities:
Carrier Detect: yes
Speed: 1000 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 10.42.0.86
Prefix: 24 (255.255.255.0)
Gateway: 10.42.0.1
DNS: 10.42.0.1
##### 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/Orbit Guest]] (600 root)
[connection] id=Orbit Guest | type=802-11-wireless
[802-11-wireless] ssid=Orbit Guest | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Wi-Fi connection 1]] (600 root)
[connection] id=Magick | type=802-11-wireless
[802-11-wireless] ssid=Magick
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Europe/Copenhagen (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 ###################
vmnet8 no frequency information.
eth0 no frequency information.
lo no frequency information.
lxcbr0 no frequency information.
vmnet1 no frequency information.
docker0 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
Current Frequency:2.412 GHz (Channel 1)
##### iwlist scan #######################
vmnet8 Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
lxcbr0 Interface doesn't support scanning.
vmnet1 Interface doesn't support scanning.
docker0 Interface doesn't support scanning.
wlan0 No scan results
##### module infos ######################
[cfg80211]
filename: /lib/modules/3.13.0-62-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 695424C2F5CD23A91B67E25
depends:
intree: Y
vermagic: 3.13.0-62-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: E0:7C:FC:BE:E8:34:59:BA:45:54:3D:39:B2:C2:A5:78:75:74:50:01
sig_hashalgo: sha512
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]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
rtc
##### 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/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/vmware-fuse.conf]
alias char-major-10-229 fuse
##### 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}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# USB device 0x:0x (rtl8192eu)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 189.645025] RTL871X: rtw_scan_timeout_handler(wlan0) fw_state=808
[ 347.962941] r8169 0000:03:00.0 eth0: link up
[ 347.962957] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 349.032411] bridge-lxcbr0: disabling the bridge
[ 349.047488] bridge-lxcbr0: down
[ 349.047497] bridge-lxcbr0: detached
[ 349.047585] bridge-eth0: up
[ 349.047591] bridge-eth0: attached
[ 349.474871] IPv6: ADDRCONF(NETDEV_UP): docker0: link is not ready
########## wireless info END ############
[1]: http://askubuntu.com/a/425205/17643
答案1
这是一个 Realtek RTL8192EU 设备。
需要安装驱动，有线连接网络，在终端运行：
sudo add-apt-repository ppa:hanipouspilot/rtlwifi
sudo apt-get update
sudo apt-get install rtl8192eu-dkms