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无法连接到 5GHZ wifi 16.10

tag-icon • tag-icon networking wireless 16.10 atheros
无法连接到 5GHZ wifi 16.10

我目前有一个 Qualcomm Atheros QCA6174 802.11ac 无线网络适配器，无法连接到我的 5GHZ wifi。

我第一次安装 Ubuntu 16.10 时似乎从未遇到过这个问题，但使用大约一周后，我似乎无法连接到 5GHZ wifi。

我仍然可以在我的无线连接列表中看到它，但遗憾的是无法连接:(。

以下是一些 dmesg 日志：

[ 2349.974517] wlp5s0: deauthenticating from dc:53:7c:c6:b6:8a by local choice (Reason: 3=DEAUTH_LEAVING)
[ 2354.678670] wlp5s0: authenticate with dc:53:7c:c6:b6:8b
[ 2354.711911] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 1/3)
[ 2354.713421] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 2/3)
[ 2354.714820] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 3/3)
[ 2354.716107] wlp5s0: authentication with dc:53:7c:c6:b6:8b timed out
[ 2359.277093] wlp5s0: authenticate with dc:53:7c:c6:b6:8b
[ 2359.310035] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 1/3)
[ 2359.311188] wlp5s0: authenticated
[ 2359.314510] wlp5s0: associate with dc:53:7c:c6:b6:8b (try 1/3)
[ 2359.315939] wlp5s0: RX AssocResp from dc:53:7c:c6:b6:8b (capab=0x1011 status=0 aid=2)
[ 2359.319432] wlp5s0: associated
[ 2359.325836] ath: EEPROM regdomain: 0x8114
[ 2359.325839] ath: EEPROM indicates we should expect a country code
[ 2359.325841] ath: doing EEPROM country->regdmn map search
[ 2359.325844] ath: country maps to regdmn code: 0x37
[ 2359.325846] ath: Country alpha2 being used: DE
[ 2359.325847] ath: Regpair used: 0x37
[ 2359.325850] ath: regdomain 0x8114 dynamically updated by country IE
[ 2359.335796] wlp5s0: Limiting TX power to 30 (30 - 0) dBm as advertised by dc:53:7c:c6:b6:8b
[ 2366.444236] wlp5s0: deauthenticated from dc:53:7c:c6:b6:8b (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)
[ 2373.852246] wlp5s0: authenticate with dc:53:7c:c6:b6:8b
[ 2373.885706] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 1/3)
[ 2373.887154] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 2/3)
[ 2373.888642] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 3/3)
[ 2373.889973] wlp5s0: authentication with dc:53:7c:c6:b6:8b timed out
[ 2379.338153] wlp5s0: authenticate with dc:53:7c:c6:b6:8b
[ 2379.371351] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 1/3)
[ 2379.372643] wlp5s0: authenticated
[ 2379.375037] wlp5s0: associate with dc:53:7c:c6:b6:8b (try 1/3)
[ 2379.376461] wlp5s0: RX AssocResp from dc:53:7c:c6:b6:8b (capab=0x1011 status=0 aid=2)
[ 2379.379678] wlp5s0: associated
[ 2379.381208] ath: EEPROM regdomain: 0x8114
[ 2379.381208] ath: EEPROM indicates we should expect a country code
[ 2379.381209] ath: doing EEPROM country->regdmn map search
[ 2379.381209] ath: country maps to regdmn code: 0x37
[ 2379.381209] ath: Country alpha2 being used: DE
[ 2379.381210] ath: Regpair used: 0x37
[ 2379.381210] ath: regdomain 0x8114 dynamically updated by country IE
[ 2379.406552] wlp5s0: Limiting TX power to 30 (30 - 0) dBm as advertised by dc:53:7c:c6:b6:8b
[ 2424.690405] wlp5s0: deauthenticating from dc:53:7c:c6:b6:8b by local choice (Reason: 3=DEAUTH_LEAVING)

它似乎能够进行身份验证 - 但会陷入我上面显示的循环，在该循环中，它会进行身份验证，遇到某种错误并取消身份验证（大多数时候是由于原因 3，但有时如下所示，我似乎会出现握手超时）。

可能是什么问题？

答案1

在您的日志中，我们看到：

[ 2349.974517] wlp5s0: deauthenticating from dc:53:7c:c6:b6:8a by local choice (Reason: 3=DEAUTH_LEAVING)
[ 2354.678670] wlp5s0: authenticate with dc:53:7c:c6:b6:8b
[ 2354.711911] wlp5s0: send auth to dc:53:7c:c6:b6:8b (try 1/3)

我假设 MAC 地址 x:8a 和 x:8b 是路由器的 2.4 GHz 和 5 GHz 频段。我还怀疑它们有相同的名称。我建议您尝试将网络管理器绑定到其中一个，如下所示：Ubuntu 连接断开。工作了一段时间后又开始断开

如果此方法无效，请将 SSID 重命名为 router2.4 和 router5 之类的名称。连接到其中一个并坚持使用它。

答案2

编辑/etc/default/crda文件并输入国家代码。看看这是否能解决您的问题。目前默认为 DE，但也许应该是其他的……比如 US？

sudo pico /etc/default/crda

或者

sudo -H gedit /etc/default/crda

另外，请确保您使用 WPA2-AES 连接到无线路由器。

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