Jetson TX2 缺少以太网端口

Question

我有一个连接技术 Rudi TX2安装了 Ubuntu 16.04 的设备，它有两个物理以太网端口eth0（eth1它们也可以工作）。

将 Jetson 平台升级到较新版本并刷新 Connect Tech 的 BSP 后，运行时现在只有一个以太网接口可见ifconfig。

是否存在可以启用或禁用网络接口的配置文件？

编辑：另一个以太网端口未启用，从某种意义上说，它似乎完全坏了，而不仅仅是一个/etc/network/interfaces东西。

$ ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 52:f3:af:e6:b7:7b brd ff:ff:ff:ff:ff:ff
3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 00:04:4b:a7:fc:a7 brd ff:ff:ff:ff:ff:ff
4: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1
    link/ipip 0.0.0.0 brd 0.0.0.0
5: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
    link/can 
6: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 00:04:4b:a7:fc:a5 brd ff:ff:ff:ff:ff:ff
7: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:38:e1:a8:a9 brd ff:ff:ff:ff:ff:ff
8: vcan0: <NOARP,UP,LOWER_UP> mtu 16 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
    link/can 

$ sudo inxi -SMN -! 31 -y 80
System:    Kernel: 4.4.38-tegra aarch64 (32 bit) Console: tty 16
           Distro: Ubuntu 16.04 xenial
Machine:   No /sys/class/dmi; using dmidecode: no smbios data available. Old system?
Network:   Card: Failed to Detect Network Card!