我有 Ubuntu 14.04。第一次使用时无线连接很好，但更新 Ubuntu 后无线连接就无法使用了
操作系统版本
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty
核心
Linux dead-Satellite-C850-B559 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
lspci
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723AE PCIe Wireless Network Adapter [10ec:8723]
Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:0723]
Kernel driver in use: rtl8723ae
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
Subsystem: Toshiba America Info Systems Device [1179:fb37]
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 04f2:b307 Chicony Electronics Co., Ltd
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 002: ID 04e8:61b3 Samsung Electronics Co., Ltd
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 0930:021d Toshiba Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
PCMCIA 卡信息
rfkill
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
lsmod
rtl8723ae 86464 0
rtl_pci 26690 1 rtl8723ae
rtlwifi 63475 2 rtl_pci,rtl8723ae
mac80211 626489 3 rtl_pci,rtlwifi,rtl8723ae
cfg80211 484040 2 mac80211,rtlwifi
iw reg get
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
interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig wlan0 up # line maintained by pppoeconf
provider dsl-provider
auto wlan0
iface wlan0 inet manual
iwconfig
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
内容resolv.conf
nameserver 127.0.1.1
search WAG54GS
nm-tool
NetworkManager Tool
State: connected (global)
- Device: eth0 [Auto Ethernet] ------------------------------------------------
Type: Wired
Driver: r8169
State: connected
Default: yes
HW Address: <MAC address removed>
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.1.110
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 168.187.147.244
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: rtl8723ae
State: unmanaged
Default: no
HW Address: <MAC address removed>
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.conf
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=<MAC address removed>,
[ifupdown]
managed=false
iwlist
wlan0 Scan completed :
Cell 01 - Address: <MAC address removed>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=34/70 Signal level=-76 dBm
Encryption key:on
ESSID:"Mayang511"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000000007ceb466
Extra: Last beacon: 4ms ago
IE: Unknown: 00094D6179616E67353131
IE: Unknown: 010882848B962430486C
IE: Unknown: 030101
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1ABC011BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601080000000000000000000000000000000000000000
IE: Unknown: DD090010180203000C0000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F202010185000132000027A4000041435E0061322F00
Cell 02 - Address: <MAC address removed>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=32/70 Signal level=-78 dBm
Encryption key:on
ESSID:"nile"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000000c43d1942
Extra: Last beacon: 4ms ago
IE: Unknown: 00046E696C65
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: DD06001018020201
iwlist channel
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
modinfo
filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723ae/rtl8723ae.ko
firmware: rtlwifi/rtl8723fw_B.bin
firmware: rtlwifi/rtl8723fw.bin
description: Realtek 8723E 802.11n PCI wireless
license: GPL
author: Larry Finger <[email protected]>
author: Realtek WlanFAE <[email protected]>
author: lizhaoming <[email protected]>
srcversion: D3E2984FD11B8B20FAF9D09
alias: pci:v000010ECd00008723sv*sd*bc*sc*i*
depends: rtlwifi,rtl_pci,mac80211
intree: Y
vermagic: 3.13.0-24-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0
sig_hashalgo: sha512
parm: swenc:Set to 1 for software crypto (default 0)
(bool)
parm: ips:Set to 0 to not use link power save (default 1)
(bool)
parm: swlps:Set to 1 to use SW control power save (default 0)
(bool)
parm: fwlps:Set to 1 to use FW control power save (default 1)
(bool)
parm: debug:Set debug level (0-5) (default 0) (int)
filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/rtlwifi/rtl_pci.ko
description: PCI basic driver for rtlwifi
license: GPL
author: Larry Finger <[email protected]>
author: Realtek WlanFAE <[email protected]>
author: lizhaoming <[email protected]>
srcversion: B6B8AA929B5F982954A6DE1
depends: mac80211,rtlwifi
intree: Y
vermagic: 3.13.0-24-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0
sig_hashalgo: sha512
filename: /lib/modules/3.13.0-24-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko
description: Realtek 802.11n PCI wireless core
license: GPL
author: Larry Finger <[email protected]>
author: Realtek WlanFAE <[email protected]>
author: lizhaoming <[email protected]>
srcversion: C21FC2F90947540319DE390
depends: mac80211,cfg80211
intree: Y
vermagic: 3.13.0-24-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: <MAC address removed>:D9:06:21:70:6E:8D:06:60:4D:73:0B:35:9F:C0
sig_hashalgo: sha512
模块
lp
rtc
黑名单
[/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/fbdev-blacklist.conf]
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist gx1fb
blacklist gxfb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist nvidiafb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist viafb
blacklist vt8623fb
udev 规则
# PCI device 0x10ec:0x8136 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x10ec:0x8723 (rtl8723ae)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
dmesg
[ 13.153939] rtl8723ae: Using firmware rtlwifi/rtl8723fw_B.bin
[ 13.299994] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[ 13.300225] rtlwifi: wireless switch is on
[ 14.520994] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
我尝试了所有见过的解决方案。我下载了很多驱动程序，但运行命令时make出现错误
答案1
作为对您的问题的更一般性回答，我按照这位用户的建议使用此网卡后，体验到了更好的性能：
https://zach-adams.com/2014/06/fixing-rtl8723ae-driver-ubuntu-linux/
简单来说就是两个阶段：
尝试使用以下命令安装 linux-firmware-nonfree 驱动程序：
sudo apt-get install linux-firmware-nonfree尝试安装 WICD 网络管理器。有关您的 Ubuntu 版本的说明，请参阅https://help.ubuntu.com/community/WICD