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我剛剛得到了一個cubox-i4，但有一個LAN連接的大問題。它再次建立並崩潰。問題是，如果我通過LAN將它連接到機場快車（通過WiFi連接），則連接穩定（=>沒有硬件問題）。直接連接到路由器不工作。下面是當連接到路由器的日誌：局域網不穩定的連接，WIFI工作
May 8 23:45:29 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Down
May 8 23:45:30 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now ON (device state 100)
May 8 23:45:30 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 100/Full
May 8 23:45:36 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Half
May 8 23:45:38 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:46:00 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Half
May 8 23:46:02 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:46:24 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 8 23:46:24 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Down
May 8 23:46:25 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now ON (device state 100)
May 8 23:46:25 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 100/Full
May 8 23:46:33 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 8 23:46:33 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Down
May 8 23:46:35 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now ON (device state 100)
May 8 23:46:35 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:46:39 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Half
May 8 23:46:41 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:46:45 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Half
May 8 23:46:47 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:47:09 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 8 23:47:09 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Down
May 8 23:47:11 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now ON (device state 100)
May 8 23:47:11 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:47:15 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Half
May 8 23:47:19 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:47:23 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 8 23:47:23 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Down
May 8 23:47:24 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now ON (device state 100)
May 8 23:47:24 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full
May 8 23:47:28 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 8 23:47:28 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Down
May 8 23:47:30 linaro-ubuntu-desktop NetworkManager[2552]: <info> (eth0): carrier now ON (device state 100)
May 8 23:47:30 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 100/Full
May 8 23:47:46 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Half
May 8 23:47:48 linaro-ubuntu-desktop kernel: PHY: 1:04 - Link is Up - 1000/Full