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在我的 MacBook Pro 升级到 Ubuntu 14.04 后恢复连接，无线无法重新连接。

tag-icon • tag-icon wireless networking 14.04 suspend
在我的 MacBook Pro 升级到 Ubuntu 14.04 后恢复连接，无线无法重新连接。

我有一台 MacBook Pro，它安装了 Ubuntu 14.04 和 Mac OS X 双启动，几天前我将 Ubuntu 从 13.10 升级到了 14.04。当我暂停然后恢复系统时，无线连接尝试连接但失败了，我尝试了一些解决方案，例如重新启动网络或删除并重新加载 WiFi 内核模块 (b43)，但都不起作用。只有重新启动系统才能解决问题。

输出dmesg表明存在身份验证问题：

...
[ 8050.906223] wlan0: deauthenticating from <mac_address> by local choice (reason=3)
[ 8050.914824] wlan0: authenticate with <mac_address>
[ 8050.915142] wlan0: send auth to <mac_address> (try 1/3)
[ 8050.917960] wlan0: authenticated
[ 8055.919691] wlan0: deauthenticating from <mac_address> by local choice (reason=3)
[ 8066.438256] wlan0: authenticate with <mac_address>
[ 8066.438631] wlan0: send auth to <mac_address> (try 1/3)
[ 8066.440185] wlan0: authenticated
[ 8071.447980] wlan0: deauthenticating from <mac_address> by local choice (reason=3)
[ 8082.466500] wlan0: authenticate with <mac_address>
[ 8082.473305] wlan0: send auth to <mac_address> (try 1/3)
[ 8082.493654] wlan0: authenticated
...

答案1

我找到了一种恢复连接的方法，尽管我不明白问题的原因是什么。
但是，终止该wpa_supplicant进程后，它会自动重新启动，并且连接恢复：

sudo killall wpa_supplicant

dmesg 的输出：

[3481.457982] b43 bcma0: 0 wlan0: disabling HT as WMM / QoS is not supported by the AP 
[3481.457992] b43 bcma0: 0 wlan0: disabling VHT as WMM / QoS is not supported by the AP 
[3481.461214] wlan0: associate with <mac_address> (try 1/3) 
[3481.464068] wlan0: RX AssocResp from <mac_address> (capab = 0x431 status = 0 aid = 3) 
[3481.464475] wlan0: associated 
[3481.464501] IPv6: ADDRCONF (NETDEV_CHANGE): wlan0: link Becomes ready...

我希望它对其他人也有用。

答案2

创建脚本/etc/pm/sleep.d/wpa_supplicant，电源管理将在恢复时自动调用“killall wpa_supplicant”。

/etc/pm/sleep.d/wpa_supplicant

#!/bin/sh
case "$1" in
 resume)
   killall wpa_supplicant       
 ;;
esac

答案3

我的解决方案（在装有 Ubuntu 14.04 的 Macbook Pro 上）可以在以下帖子中找到：此主题

简而言之，它与 Joonas 发布的内容类似，但进行了一些进一步的修改。

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