我有一个 BrosTrend AC3L 设备。它最初可以正常工作，然后我修补到最新的 20.04，它似乎出现了这种行为。设备启动并连接到网络，然后无法激活。USB wifi 设备上的灯亮着，它在网络上，但某个地方的网络管理器或 systemd 没有启用它。奇怪的是，如果我将另一个家用路由器连接到我系统上的以太网端口并允许它在该网络上获取地址，wifi 就可以正常工作。以太网系统没有外部访问权限，但 DHCP 可以正常工作。似乎可以修复 wifi。所以现在我有一个令人沮丧的解决方法，那就是运行带有以太网链接的路由器，只是为了修复我工作站上的 wifi。我看不到错误。显然 dhcp 或 wifi 客户端配置中的某些内容已损坏。这不是我的网络，否则我只会设置静态和硬编码接口。我讨厌 wifi。
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2926] device (wlx7ca7b0be521e): Activation: starting connection 'mayasgarden5_1' (1ec77a3e-3a2a-42b2-9789-14cbed923cf3)
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2927] device (wlx7ca7b0be521e): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2931] device (wlx7ca7b0be521e): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2935] device (wlx7ca7b0be521e): Activation: (wifi) access point 'mayasgarden5_1' has security, but secrets are required.
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2935] device (wlx7ca7b0be521e): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2937] sup-iface[0x556a2ed670f0,wlx7ca7b0be521e]: wps: type pbc start...
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2953] device (wlx7ca7b0be521e): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2955] device (wlx7ca7b0be521e): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] device (wlx7ca7b0be521e): Activation: (wifi) connection 'mayasgarden5_1' has security, and secrets exist. No new secrets needed.
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] Config: added 'ssid' value 'mayasgarden5_1'
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] Config: added 'scan_ssid' value '1'
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] Config: added 'bgscan' value 'simple:30:-70:86400'
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256 FT-PSK'
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] Config: added 'auth_alg' value 'OPEN'
Jun 23 07:08:42 xopherews NetworkManager[16382]: <info> [1592921322.2959] Config: added 'psk' value '<hidden>'
Jun 23 07:08:42 xopherews wpa_supplicant[2649]: wlx7ca7b0be521e: Trying to associate with f4:f2:6d:8a:a6:8f (SSID='mayasgarden5_1' freq=5180 MHz)
Jun 23 07:08:42 xopherews wpa_supplicant[2649]: wlx7ca7b0be521e: Association request to the driver failed
Jun 23 07:08:42 xopherews wpa_supplicant[2649]: wlx7ca7b0be521e: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="mayasgarden5_1" auth_failures=1 duration=10 reason=CONN_FAILED
Jun 23 07:09:07 xopherews NetworkManager[16382]: <warn> [1592921347.8995] device (wlx7ca7b0be521e): Activation: (wifi) association took too long, failing activation
Jun 23 07:09:07 xopherews NetworkManager[16382]: <info> [1592921347.8996] device (wlx7ca7b0be521e): state change: config -> failed (reason 'ssid-not-found', sys-iface-state: 'managed')
Jun 23 07:09:08 xopherews NetworkManager[16382]: <warn> [1592921348.6714] device (wlx7ca7b0be521e): Activation: failed for connection 'mayasgarden5_1'
Jun 23 07:09:08 xopherews NetworkManager[16382]: <info> [1592921348.6716] device (wlx7ca7b0be521e): supplicant interface state: disconnected -> scanning
Jun 23 07:09:08 xopherews NetworkManager[16382]: <info> [1592921348.6717] device (wlx7ca7b0be521e): supplicant interface state: scanning -> disconnected
Jun 23 07:09:08 xopherews NetworkManager[16382]: <info> [1592921348.6764] device (wlx7ca7b0be521e): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Jun 23 07:09:08 xopherews wpa_supplicant[2649]: wlx7ca7b0be521e: Reject scan trigger since one is already pending
Jun 23 07:09:15 xopherews NetworkManager[16382]: <info> [1592921355.0600] manager: startup complete