下载 Jetpack 3 后，我尝试刷新 Jetson 并安装 CUDA 8。我尝试使用两台不同的计算机进行安装（wifi 关闭）。我无法安装 CUDA，出现错误。对于两台计算机，在安装过程中出现故障后，以太网连接不再工作。我检查并与另一台计算机比较了这些/etc/network/interfaces文件/etc/NetworkManager/NetworkManager.conf。
我的配置是 Ubuntu 16.04LTS、Jetson TX2、Jetpack 3。计算机和 Jetson 连接到集线器，连接到互联网。
目前，我尝试恢复计算机上的以太网连接。现在，我的计算机已插入连接到 DHCP 服务器的集线器。 （Jetson TX2 已拔下电源且 JetPack 未运行）。
我尝试了这些命令来找出问题所在。
$ ifconfig eth0（当我尝试连接 eth0 时）
eth0 Link encap:Ethernet HWaddr 28:f1:0e:48:52:d2
inet6 addr: 2607:f810:c20:16:2af1:eff:fe48:52d2/64 Scope:Global
inet6 addr: fe80::2af1:eff:fe48:52d2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17525 errors:0 dropped:104 overruns:0 frame:0
TX packets:366 errors:0 dropped:0 overruns:0 carrier:0
collisions:84 txqueuelen:1000
RX bytes:1709238 (1.7 MB) TX bytes:70530 (70.5 KB)
Interrupt:16 Memory:dd400000-dd420000
我没有 IPV4 地址，所以我猜这意味着 DHCP 没有收到请求或无法发送请求。
$ cat /etc/网络/接口
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
看起来不错，我也尝试添加
auto eth0
iface eth0 inet dhcp
我得到了同样的结果。
$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
如果我设置 Managed=true，我会得到一个无法设置的 ifupdown 连接。
$journalctl -f
Jul 07 18:35:05 toromachine dhclient[22025]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4 (xid=0x6a052979)
Jul 07 18:35:09 toromachine dhclient[22025]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10 (xid=0x6a052979)
Jul 07 18:35:19 toromachine dhclient[22025]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18 (xid=0x6a052979)
Jul 07 18:35:37 toromachine dhclient[22025]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12 (xid=0x6a052979)
Jul 07 18:35:47 toromachine NetworkManager[19050]: <warn> [1499477747.7752] dhcp4 (eth0): request timed out
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.7753] dhcp4 (eth0): state changed unknown -> timeout
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8079] dhcp4 (eth0): canceled DHCP transaction, DHCP client pid 22025
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8079] dhcp4 (eth0): state changed timeout -> done
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8086] device (eth0): state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8091] manager: NetworkManager state is now DISCONNECTED
Jul 07 18:35:47 toromachine NetworkManager[19050]: <warn> [1499477747.8098] device (eth0): Activation: failed for connection 'eth0'
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8113] device (eth0): state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8151] policy: auto-activating connection 'eth0'
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8166] device (eth0): Activation: starting connection 'eth0' (e7361020-1796-4583-aab9-9d479aac94fe)
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8167] device (eth0): state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8168] manager: NetworkManager state is now CONNECTING
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8170] device (eth0): state change: prepare -> config (reason 'none') [40 50 0]
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8180] device (eth0): state change: config -> ip-config (reason 'none') [50 70 0]
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8182] dhcp4 (eth0): activation: beginning transaction (timeout in 45 seconds)
Jul 07 18:35:47 toromachine NetworkManager[19050]: <info> [1499477747.8206] dhcp4 (eth0): dhclient started with pid 22043
Jul 07 18:35:47 toromachine dhclient[22043]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x15238503)
Jul 07 18:35:50 toromachine dhclient[22043]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 (xid=0x15238503)
Jul 07 18:35:55 toromachine dhclient[22043]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9 (xid=0x15238503)
Jul 07 18:36:04 toromachine dhclient[22043]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11 (xid=0x15238503)
Jul 07 18:36:15 toromachine dhclient[22043]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20 (xid=0x15238503)
Jul 07 18:36:32 toromachine NetworkManager[19050]: <warn> [1499477792.7707] dhcp4 (eth0): request timed out
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7708] dhcp4 (eth0): state changed unknown -> timeout
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7874] dhcp4 (eth0): canceled DHCP transaction, DHCP client pid 22043
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7875] dhcp4 (eth0): state changed timeout -> done
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7881] device (eth0): state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7885] manager: NetworkManager state is now DISCONNECTED
Jul 07 18:36:32 toromachine NetworkManager[19050]: <warn> [1499477792.7891] device (eth0): Activation: failed for connection 'eth0'
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7902] device (eth0): state change: failed -> disconnected (reason 'none') [120 30 0]
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7937] policy: auto-activating connection 'eth0'
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7945] device (eth0): Activation: starting connection 'eth0' (e7361020-1796-4583-aab9-9d479aac94fe)
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7954] device (eth0): state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7955] manager: NetworkManager state is now CONNECTING
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7958] device (eth0): state change: prepare -> config (reason 'none') [40 50 0]
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7969] device (eth0): state change: config -> ip-config (reason 'none') [50 70 0]
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7971] dhcp4 (eth0): activation: beginning transaction (timeout in 45 seconds)
Jul 07 18:36:32 toromachine NetworkManager[19050]: <info> [1499477792.7984] dhcp4 (eth0): dhclient started with pid 22057
对我来说，它无法将请求发送到 DHCP 服务器。但好像发现了一些DHCP。
$ cat /var/lib/NetworkManager/NetworkManager.state
[main]
NetworkingEnabled=true
WirelessEnabled=false
WWANEnabled=true
WimaxEnabled=true
看起来不错。我手动停用无线。
$ sudo dhcpdump -i eth0
TIME: 2017-07-12 17:24:55.942
IP: 0.0.0.0 (c:51:1:e2:30:2b) > 255.255.255.255 (ff:ff:ff:ff:ff:ff)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 0
XID: 14ac6666
SECS: 3
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 0.0.0.0
CHADDR: 0c:51:01:e2:30:2b:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 1 (DHCPDISCOVER)
OPTION: 51 ( 4) IP address leasetime 86400 (24h)
OPTION: 12 ( 33) Host name dcs-airporttimecapsule-3042bainer
OPTION: 55 ( 7) Parameter Request List 1 (Subnet mask)
2 (Time offset)
3 (Routers)
15 (Domainname)
6 (DNS server)
12 (Host name)
44 (NetBIOS name server)
OPTION: 57 ( 2) Maximum DHCP message size 1500
OPTION: 61 ( 7) Client-identifier 01:0c:51:01:e2:30:2b
---------------------------------------------------------------------------
我希望有人能有一些想法来帮助我。