USB WiFi 适配器不断断线?

USB WiFi 适配器不断断线?

我有一个无头 Fedora Linux 机箱,我正在尝试让 Alfa AWUS036H USB 无线适配器与之配合使用。我正在尝试连接到我自己的无线网络(我的 ISP 提供的 Actiontec 路由器)。无线信号似乎很强(任务栏小部件显示 4/5 条满格)。

使用 VNC 桌面会话,输入 WPA 密码后,它会工作一段时间,然后几分钟后,连接断开,我可以在桌面上看到网络指示器返回到“旋转”图标,最终弹出一个身份验证对话框以重新输入 WPA 密码,但重新输入不起作用。

查看日志dmesg,我看到:

[311950.773254] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[311952.761985] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[311997.648652] wlan0: authenticate with 10:5f:06:e2:96:ed
[311997.721638] wlan0: send auth to 10:5f:06:e2:96:ed (try 1/3)
[311997.724327] wlan0: authenticated
[311997.724575] rtl8187 1-2:1.0: wlan0: disabling HT as WMM/QoS is not supported
[311997.762042] wlan0: associate with 10:5f:06:e2:96:ed (try 1/3)
[311997.765207] wlan0: RX AssocResp from 10:5f:06:e2:96:ed (capab=0x411 status=0 aid=10)
[311997.765936] wlan0: associated
[311997.765980] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[312122.930027] ieee80211 phy10: wlan0: No probe response from AP 10:5f:06:e2:96:ed after 500ms, disconnecting.
[312122.949129] cfg80211: Calling CRDA to update world regulatory domain
[312122.951792] cfg80211: World regulatory domain updated:
[312122.951797] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[312122.951800] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[312122.951803] cfg80211:   (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[312122.951805] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[312122.951807] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[312122.951810] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[312122.951836] cfg80211: Calling CRDA for country: US
[312122.954992] cfg80211: Regulatory domain changed to country: US
[312122.954998] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[312122.955048] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
[312122.955051] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
[312122.955054] cfg80211:   (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[312122.955056] cfg80211:   (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[312122.955058] cfg80211:   (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[312122.955060] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
[312124.123657] wlan0: authenticate with 10:5f:06:e2:96:ed
[312124.196672] wlan0: send auth to 10:5f:06:e2:96:ed (try 1/3)
[312124.397018] wlan0: send auth to 10:5f:06:e2:96:ed (try 2/3)
[312124.598019] wlan0: send auth to 10:5f:06:e2:96:ed (try 3/3)
[312124.799018] wlan0: authentication with 10:5f:06:e2:96:ed timed out

您可以在前五行中看到,wlan0接口确实成功地向路由器进行了身份验证。但过了一会儿,出现了“AP 没有探测响应”,它似乎试图建立自己的无线网络,寻找开放的 WiFi 信道?然后它尝试重新向路由器进行身份验证,但失败了,而几分钟前它还成功了。

从这些日志来看,是 IPv6 广播导致我的适配器无法使用?还是“禁用 HT,因为不支持 WMM/QoS”?

“无探测响应”仅等待 500 毫秒才能收到服务器的响应。是否可以在某个配置中增加该时间(我的路由器响应速度很慢吗)?

编辑:路由器方面的更多详细信息:它是运行固件 TDST2200H-31.126L.04 的 Actiontec T2200H。我在查看路由器的 Web 界面时发现一件奇怪的事情,它声称其 MAC 地址是 10:5F:06:E2:96:EC。这与 Linux 客户端日志中的内容相差一位数字(日志显示最终分组应为“ED”,而不是“EC”)?无线安全设置为 WPA/WPA2-TKIP+AES。WWM 已启用,WWM 省电已禁用。

家里其他使用 PCI 无线网卡的计算机可以毫无问题地连接。这仅仅是因为 Alfa USB 适配器无法处理 WMM 或 IPv6 命令吗?

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