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ubuntu 20.04升級後wifi問題

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ubuntu 20.04升級後wifi問題

我在 Raspberry 4 Model B 上安裝了 ubuntu LTS 20.04 伺服器，並且測試了 wifi，它運行良好，但是當我升級 ubuntu 後，wifi 無法正常工作，您對這個問題有什麼想法嗎？

先感謝您。

答案1

這就是我要做的：

  • ls /lib/systemd/system/NetworkManager.service

仔細檢查輸出是否未找到

  • 如果該檔案不存在，請重新新增服務單元
[Unit]
Description=Network Manager
Documentation=man:NetworkManager(8)
Wants=network.target
After=network-pre.target dbus.service
Before=network.target 

[Service]
Type=dbus
BusName=org.freedesktop.NetworkManager
ExecReload=/usr/bin/busctl call org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager Reload u 0
#ExecReload=/bin/kill -HUP $MAINPID
ExecStart=/usr/sbin/NetworkManager --no-daemon
Restart=on-failure
# NM doesn't want systemd to kill its children for it
KillMode=process
CapabilityBoundingSet=CAP_NET_ADMIN CAP_DAC_OVERRIDE CAP_NET_RAW CAP_NET_BIND_SERVICE CAP_SETGID CAP_SETUID CAP_SYS_MODULE CAP_AUDIT_WRITE CAP_KILL CAP_SYS_CHROOT

ProtectSystem=true
ProtectHome=read-only

[Install]
WantedBy=multi-user.target
Also=NetworkManager-dispatcher.service

# We want to enable NetworkManager-wait-online.service whenever this service
# is enabled. NetworkManager-wait-online.service has
# WantedBy=network-online.target, so enabling it only has an effect if
# network-online.target itself is enabled or pulled in by some other unit.
Also=NetworkManager-wait-online.service

保存到NetworkManager.service

  • 跑步sudo mv NetworkManager.service /lib/systemd/system/
  • 使用啟動服務systemctl start NetworkManager.service

然後更新、升級。

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