我最近在计算机上安装了 Ubuntu 14.04 64 位，但无法使用 WPA2-PSK [AES] 加密连接到 Netgear WGT624 上的无线网络。尽管如此，我还是能够连接到邻居的不安全 wifi。我尝试下载 Dropbox 驱动程序，但在编译时收到错误。我可以使用其他设备进行连接。我一直在互联网上搜索解决方案，但一无所获。有人知道如何解决这个问题吗？
以下是一些可能有用的信息。
$ sudo lshw -C network -numeric
*-network
description: Ethernet interface
product: AR8161 Gigabit Ethernet [1969:1091]
vendor: Qualcomm Atheros [1969]
physical id: 0
bus info: pci@0000:01:00.0
logical name: eth0
version: 10
serial: 00:8c:fa:23:ef:eb
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx latency=0 link=no multicast=yes port=twisted pair
resources: irq:45 memory:c8500000-c853ffff ioport:3000(size=128)
*-network
description: Wireless interface
product: RTL8723AE PCIe Wireless Network Adapter [10EC:8723]
vendor: Realtek Semiconductor Co., Ltd. [10EC]
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 00
serial: 20:68:9d:e6:58:c3
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723ae driverversion=3.13.0-30-generic firmware=N/A ip=192.168.99.159 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 ioport:2000(size=256) memory:c8400000-c8403fff
编辑：sudo iwlist scan我尝试连接的网络的 结果如下所示：
Cell 10 - Address: 00:14:6C:25:24:5C
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=70/70 Signal level=-38 dBm
Encryption key:on
ESSID:"KarlMarx"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s
Bit Rates:9 Mb/s; 18 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000000271e2db29
Extra: Last beacon: 56ms ago
IE: Unknown: 00084B61726C4D617278
IE: Unknown: 010882848B960C183048
IE: Unknown: 03010B
IE: Unknown: 2A0100
IE: Unknown: 32041224606C
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Preauthentication Supported
IE: Unknown: DD0900037F0101000EFF7F
IE: Unknown: DD1A00037F030100000000146C25245C02146C25245C64002C010E08
以下是日志中的一些数据
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) starting connection 'KarlMarx'
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 4 14:05:14 peta NetworkManager[952]: <info> NetworkManager state is now CONNECTING
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0/wireless): access point 'KarlMarx' has security, but secrets are required.
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0/wireless): connection 'KarlMarx' has security, and secrets exist. No new secrets needed.
Jul 4 14:05:14 peta NetworkManager[952]: <info> Config: added 'ssid' value 'KarlMarx'
Jul 4 14:05:14 peta NetworkManager[952]: <info> Config: added 'scan_ssid' value '1'
Jul 4 14:05:14 peta NetworkManager[952]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Jul 4 14:05:14 peta NetworkManager[952]: <info> Config: added 'auth_alg' value 'OPEN'
Jul 4 14:05:14 peta NetworkManager[952]: <info> Config: added 'psk' value '<omitted>'
Jul 4 14:05:14 peta NetworkManager[952]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Jul 4 14:05:14 peta NetworkManager[952]: <info> Config: set interface ap_scan to 1
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: inactive -> scanning
Jul 4 14:05:14 peta wpa_supplicant[1138]: message repeated 7 times: [ wlan0: CTRL-EVENT-SCAN-STARTED ]
Jul 4 14:05:14 peta wpa_supplicant[1138]: wlan0: SME: Trying to authenticate with 00:14:6c:25:24:5c (SSID='KarlMarx' freq=2452 MHz)
Jul 4 14:05:14 peta kernel: [ 1088.256023] wlan0: authenticate with 00:14:6c:25:24:5c
Jul 4 14:05:14 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Jul 4 14:05:14 peta wpa_supplicant[1138]: wlan0: Trying to associate with 00:14:6c:25:24:5c (SSID='KarlMarx' freq=2452 MHz)
Jul 4 14:05:14 peta kernel: [ 1088.270479] wlan0: send auth to 00:14:6c:25:24:5c (try 1/3)
Jul 4 14:05:14 peta kernel: [ 1088.272682] wlan0: authenticated
Jul 4 14:05:14 peta kernel: [ 1088.272882] rtl8723ae 0000:02:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
Jul 4 14:05:14 peta kernel: [ 1088.272884] rtl8723ae 0000:02:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
Jul 4 14:05:15 peta kernel: [ 1088.274219] wlan0: associate with 00:14:6c:25:24:5c (try 1/3)
Jul 4 14:05:15 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: authenticating -> associating
Jul 4 14:05:15 peta kernel: [ 1088.378204] wlan0: associate with 00:14:6c:25:24:5c (try 2/3)
Jul 4 14:05:15 peta kernel: [ 1088.482293] wlan0: associate with 00:14:6c:25:24:5c (try 3/3)
Jul 4 14:05:15 peta kernel: [ 1088.586379] wlan0: association with 00:14:6c:25:24:5c timed out
Jul 4 14:05:15 peta wpa_supplicant[1138]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="KarlMarx" auth_failures=1 duration=10
Jul 4 14:05:15 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: associating -> disconnected
Jul 4 14:05:25 peta wpa_supplicant[1138]: wlan0: CTRL-EVENT-SCAN-STARTED
Jul 4 14:05:25 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Jul 4 14:05:26 peta wpa_supplicant[1138]: wlan0: CTRL-EVENT-SSID-REENABLED id=0 ssid="KarlMarx"
Jul 4 14:05:26 peta wpa_supplicant[1138]: wlan0: SME: Trying to authenticate with 00:14:6c:25:24:5c (SSID='KarlMarx' freq=2452 MHz)
Jul 4 14:05:26 peta kernel: [ 1099.537265] wlan0: authenticate with 00:14:6c:25:24:5c
Jul 4 14:05:26 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Jul 4 14:05:26 peta kernel: [ 1099.552096] wlan0: send auth to 00:14:6c:25:24:5c (try 1/3)
Jul 4 14:05:26 peta wpa_supplicant[1138]: wlan0: Trying to associate with 00:14:6c:25:24:5c (SSID='KarlMarx' freq=2452 MHz)
Jul 4 14:05:26 peta kernel: [ 1099.564258] wlan0: authenticated
Jul 4 14:05:26 peta kernel: [ 1099.564407] rtl8723ae 0000:02:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
Jul 4 14:05:26 peta kernel: [ 1099.564410] rtl8723ae 0000:02:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
Jul 4 14:05:26 peta kernel: [ 1099.567680] wlan0: associate with 00:14:6c:25:24:5c (try 1/3)
Jul 4 14:05:26 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: authenticating -> associating
Jul 4 14:05:26 peta kernel: [ 1099.671815] wlan0: associate with 00:14:6c:25:24:5c (try 2/3)
Jul 4 14:05:26 peta kernel: [ 1099.775903] wlan0: associate with 00:14:6c:25:24:5c (try 3/3)
Jul 4 14:05:26 peta kernel: [ 1099.879990] wlan0: association with 00:14:6c:25:24:5c timed out
Jul 4 14:05:26 peta wpa_supplicant[1138]: wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="KarlMarx" auth_failures=2 duration=20
Jul 4 14:05:26 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: associating -> disconnected
Jul 4 14:05:36 peta wpa_supplicant[1138]: wlan0: CTRL-EVENT-SCAN-STARTED
Jul 4 14:05:36 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Jul 4 14:05:39 peta NetworkManager[952]: <warn> Activation (wlan0/wireless): association took too long.
Jul 4 14:05:39 peta NetworkManager[952]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Jul 4 14:05:39 peta NetworkManager[952]: <warn> Activation (wlan0/wireless): asking for new secrets
Jul 4 14:05:39 peta NetworkManager[952]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
Jul 4 14:05:39 peta NetworkManager[952]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
Jul 4 14:05:42 peta NetworkManager[952]: <info> (wlan0): supplicant interface state: scanning -> inactive
Jul 4 14:05:44 peta NetworkManager[952]: <warn> No agents were available for this request.
Jul 4 14:05:44 peta NetworkManager[952]: <info> (wlan0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
Jul 4 14:05:44 peta NetworkManager[952]: <info> NetworkManager state is now DISCONNECTED
Jul 4 14:05:44 peta NetworkManager[952]: <info> Marking connection 'KarlMarx' invalid.
Jul 4 14:05:44 peta NetworkManager[952]: <warn> Activation (wlan0) failed for connection 'KarlMarx'
Jul 4 14:05:44 peta NetworkManager[952]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 4 14:05:44 peta NetworkManager[952]: <info> (wlan0): deactivating device (reason 'none') [0]
答案1
这很奇怪但我终于让它工作了。
首先我卸载了 NetworkManager
sudo apt-get remove --purge network-manager-gnome network-manager
然后我安装了 wicd，它可以连接到我的网络
sudo apt-get install wicd-gtk
答案2
安装常用的Wifi驱动包：
sudo apt-get install build-essential libssl-dev linux-headers-`uname -r` linux-firmware-nonfree
答案3
- 安装 wicd-gtk 然后
sudo apt-get install wicd-gtk
- 卸载网络管理器
sudo apt-get remove --purge network-manager-gnome network-manager
我的笔记本电脑 Acer Aspire E1-572 在 Ubuntu 13.10 上连接到我的 netgear 无线路由器 WGT624v3 没有任何问题，但自从更新到 Ubuntu 14.04 后就无法正常工作了。由于所有其他设备仍然能够连接，并且我的笔记本电脑与其他 WiFi 网络的连接也运行正常，因此问题似乎出在新网络管理器与至少这种类型的 netgear 路由器的组合上。我撤销了 Peta Paka 的回答，以确保整个过程中网络连接可维护。