我们有一个运行基于 Debian 9 的操作系统的嵌入式 arm 设备，运行内核 4.14.67-1.0.6+。
编辑：根据@AB 的要求，以下也是供未来观众使用的驱动程序/芯片组信息——我在提问时不知道如何找到它。
filename: /lib/modules/4.14.67-1.0.6+/extra/mlan.ko
license: GPL
version: C605
author: Marvell International Ltd.
description: M-WLAN MLAN Driver
srcversion: 103492D596FC10822F1F391
depends:
name: mlan
vermagic: 4.14.67-1.0.6+ SMP preempt mod_unload modversions ARMv7 p2v8
我们能够在启动时连接到 WiFi，但是当信号丢失时，设备不会自动重新连接。我一遍又一遍地检查文档，/etc/network/interfaces尝试wpa_supplicant不同的选项，虽然我取得了一些进展，但仍然无法正确重新连接。
我的配置如下所示。我试过用手动 iface 设置来玩wpa-confvs 。wpa-roam我尝试对 wpa_supplicant 使用不同autoscan的ap_scan设置。我们过去曾尝试使用 NetworkManager，但事实证明这台设备上的 GSM 接口存在一些问题。
/etc/网络/接口
# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
allow-hotplug mlan0
iface mlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
/etc/wpa_supplicant/wpa_supplicant.conf
ap_scan=2
# Networks SSIDs
network={
ssid="1+ Benji"
psk="REDACTED"
key_mgmt=WPA-PSK
}
我正在通过重新启动设备并确保其连接良好，然后关闭并打开手机上的 WiFi 热点来对此进行测试。当它重新启动时，wpa_supplicant 现在会扫描以尝试重新连接（以前不是这样），但连接一直失败，只是说车站正在离开。
/var/log/系统日志
# Network manually turned off
Feb 11 15:56:08 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-DISCONNECTED bssid=94:65:2d:83:c2:0d reason=3
Feb 11 15:56:08 arm kernel: [ 154.302149] wlan: EVENT: Disassociated (reason 0x3)
Feb 11 15:56:08 arm kernel: [ 154.302166] wlan: REASON: (Deauth) Sending STA is leaving (or has left) IBSS or ESS
Feb 11 15:56:08 arm kernel: [ 154.302339] wlan: Disconnected from 94:XX:XX:XX:c2:0d: Reason code 3
Feb 11 15:56:08 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Feb 11 15:56:08 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:13 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-ASSOC-REJECT bssid=00:00:00:00:00:00 status_code=1
Feb 11 15:56:13 arm kernel: [ 159.732160] wlan: SCAN COMPLETED: scanned AP count=0
Feb 11 15:56:14 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:19 arm kernel: [ 165.291259] usb 2-1: USB disconnect, device number 5
Feb 11 15:56:19 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-ASSOC-REJECT bssid=00:00:00:00:00:00 status_code=1
Feb 11 15:56:19 arm kernel: [ 165.572172] wlan: SCAN COMPLETED: scanned AP count=0
Feb 11 15:56:20 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:26 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-ASSOC-REJECT bssid=00:00:00:00:00:00 status_code=1
Feb 11 15:56:26 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="1+ Benji" auth_failures=1 duration=10 reason=CONN_FAILED
Feb 11 15:56:26 arm kernel: [ 171.912043] wlan: SCAN COMPLETED: scanned AP count=0
Feb 11 15:56:31 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:36 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-ASSOC-REJECT bssid=00:00:00:00:00:00 status_code=1
Feb 11 15:56:36 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="1+ Benji" auth_failures=2 duration=20 reason=CONN_FAILED
Feb 11 15:56:36 arm kernel: [ 182.252181] wlan: SCAN COMPLETED: scanned AP count=0
# Network AP manually turned back on
Feb 11 15:56:46 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:51 arm kernel: [ 197.512170] wlan: SCAN COMPLETED: scanned AP count=1
Feb 11 15:56:51 arm kernel: [ 197.682452] wlan: Connected to bssid 94:XX:XX:XX:c2:0d successfully
Feb 11 15:56:51 arm kernel: [ 197.685349] wlan: Received disassociation request on mlan0, reason: 3
Feb 11 15:56:51 arm kernel: [ 197.685361] wlan: REASON: (Deauth) Sending STA is leaving (or has left) IBSS or ESS
Feb 11 15:56:53 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-DISCONNECTED bssid=94:65:2d:83:c2:0d reason=3 locally_generated=1
Feb 11 15:56:53 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Feb 11 15:56:53 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:54 arm kernel: [ 199.872319] wlan: Connected to bssid 94:XX:XX:XX:c2:0d successfully
Feb 11 15:56:54 arm kernel: [ 199.874233] wlan: Received disassociation request on mlan0, reason: 3
Feb 11 15:56:54 arm kernel: [ 199.874247] wlan: REASON: (Deauth) Sending STA is leaving (or has left) IBSS or ESS
Feb 11 15:56:55 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-DISCONNECTED bssid=94:65:2d:83:c2:0d reason=3 locally_generated=1
Feb 11 15:56:55 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Feb 11 15:56:55 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:55 arm kernel: [ 201.702474] wlan: Connected to bssid 94:XX:XX:XX:c2:0d successfully
Feb 11 15:56:55 arm kernel: [ 201.704140] wlan: Received disassociation request on mlan0, reason: 3
Feb 11 15:56:55 arm kernel: [ 201.704152] wlan: REASON: (Deauth) Sending STA is leaving (or has left) IBSS or ESS
Feb 11 15:56:57 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-DISCONNECTED bssid=94:65:2d:83:c2:0d reason=3 locally_generated=1
Feb 11 15:56:57 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="1+ Benji" auth_failures=3 duration=30 reason=CONN_FAILED
Feb 11 15:56:57 arm wpa_supplicant[459]: mlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Feb 11 15:56:57 arm wpa_supplicant[459]: mlan0: Trying to associate with SSID '1+ Benji'
Feb 11 15:56:58 arm kernel: [ 203.872352] wlan: Connected to bssid 94:XX:XX:XX:c2:0d successfully
Feb 11 15:56:58 arm kernel: [ 203.874052] wlan: Received disassociation request on mlan0, reason: 3
Feb 11 15:56:58 arm kernel: [ 203.874064] wlan: REASON: (Deauth) Sending STA is leaving (or has left) IBSS or ESS
正如您在我重新打开设备上的网络 AP 后所看到的那样，设备一直尝试重新连接，但由于原因 3 失败。我已经查找了该原因，但我找不到任何实际说明任何有意义的信息以及“正在发送”的消息STA 正在离开（或已经离开）IBSS 或 ESS”没有帮助。
如果需要任何其他信息或输出日志，请告诉我，我很乐意提供。