环境：Dell L502X 上的 Ubuntu 15.10
我以前能够毫无问题地在 Ubuntu 和 Android 设备之间使用 USB 网络共享。去年年底，我在笔记本上安装了全新的 Ubuntu (15.10)。现在，使用这种组合，我无法使用 USB 网络共享。我尝试过 Nexus 4（运行 Android 5.1，以前可以与我之前使用的 Ubuntu 15.04 配合使用）、Nexus 5（运行 Android 6.0.1）和 Nexus 5X（运行 Android 6.0.1）。
ifconfig当我启用 USB 网络共享时，我在输出中得到一个新条目：
enx92c991095e89 Link encap:Ethernet HWaddr 92:c9:91:09:5e:89
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:520 (520.0 B) TX bytes:0 (0.0 B)
请注意，硬件地址会随着每次网络共享而变化，因此关闭 USB 网络共享然后重新打开，或者切换到不同的 Nexus 设备，我会得到一个替换条目：
enx82fb7388a85c Link encap:Ethernet HWaddr 82:fb:73:88:a8:5c
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:332 (332.0 B) TX bytes:0 (0.0 B)
我还在系统设置的“网络”屏幕中获得相应的有线条目，显示与节匹配的硬件地址ifconfig，并描述为“已断开连接”（对于当前启用的 USB 网络共享会话）或“未管理”（对于之前的 USB 网络共享会话）。
启用或禁用 GUFW 对问题没有影响。直接连接或通过 USB 集线器连接对问题没有影响。
我的/etc/network/interfaces标准是：
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
在 Ubuntu 15.10 上我还需做其他什么操作才能使 Android USB 网络共享功能正常运行？
更新：以下是@bain 请求的日志：
Jan 16 08:22:09 L502X kernel: [ 5377.812495] usb 1-1: new high-speed USB device number 3 using xhci_hcd
Jan 16 08:22:09 L502X kernel: [ 5377.945753] usb 1-1: New USB device found, idVendor=18d1, idProduct=4ee2
Jan 16 08:22:09 L502X kernel: [ 5377.945763] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jan 16 08:22:09 L502X kernel: [ 5377.945768] usb 1-1: Product: Nexus 5X
Jan 16 08:22:09 L502X kernel: [ 5377.945772] usb 1-1: Manufacturer: LGE
Jan 16 08:22:09 L502X kernel: [ 5377.945776] usb 1-1: SerialNumber: 00f204f982a4b8b9
Jan 16 08:22:10 L502X org.gtk.Private.GPhoto2VolumeMonitor[1780]: (process:2108): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring
Jan 16 08:22:10 L502X kernel: [ 5378.080031] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 16 08:22:10 L502X kernel: [ 5378.080049] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 16 08:22:10 L502X kernel: [ 5378.090303] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 16 08:22:10 L502X kernel: [ 5378.090319] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 16 08:22:11 L502X org.gtk.Private.GPhoto2VolumeMonitor[1780]: (process:2108): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring
Jan 16 08:22:11 L502X colord[1165]: (colord:1165): Cd-WARNING **: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/ColorManager/devices/sysfs__null_
Jan 16 08:22:14 L502X colord-sane: io/hpmud/musb.c 2081: Invalid usb_open: Permission denied
Jan 16 08:22:30 L502X kernel: [ 5398.876832] usb 1-1: USB disconnect, device number 3
Jan 16 08:22:31 L502X kernel: [ 5399.213700] usb 1-1: new high-speed USB device number 4 using xhci_hcd
Jan 16 08:22:31 L502X kernel: [ 5399.346845] usb 1-1: New USB device found, idVendor=18d1, idProduct=4ee4
Jan 16 08:22:31 L502X kernel: [ 5399.346855] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jan 16 08:22:31 L502X kernel: [ 5399.346860] usb 1-1: Product: Nexus 5X
Jan 16 08:22:31 L502X kernel: [ 5399.346864] usb 1-1: Manufacturer: LGE
Jan 16 08:22:31 L502X kernel: [ 5399.346868] usb 1-1: SerialNumber: 00f204f982a4b8b9
Jan 16 08:22:31 L502X mtp-probe: checking bus 1, device 4: "/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1"
Jan 16 08:22:31 L502X mtp-probe: bus: 1, device: 4 was not an MTP device
Jan 16 08:22:31 L502X kernel: [ 5399.385223] usbcore: registered new interface driver cdc_ether
Jan 16 08:22:31 L502X kernel: [ 5399.392871] rndis_host 1-1:1.0 usb0: register 'rndis_host' at usb-0000:04:00.0-1, RNDIS device, 9a:ff:bd:ee:76:ea
Jan 16 08:22:31 L502X kernel: [ 5399.392918] usbcore: registered new interface driver rndis_host
Jan 16 08:22:31 L502X NetworkManager[1070]: <warn> (usb0): failed to find device 4 'usb0' with udev
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> (usb0): new Ethernet device (carrier: OFF, driver: 'rndis_host', ifindex: 4)
Jan 16 08:22:31 L502X kernel: [ 5399.398467] rndis_host 1-1:1.0 enx9affbdee76ea: renamed from usb0
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> (usb0): interface index 4 renamed iface from 'usb0' to 'enx9affbdee76ea'
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> devices added (path: /sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1/1-1:1.0/net/enx9affbdee76ea, iface: enx9affbdee76ea)
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> device added (path: /sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1/1-1:1.0/net/enx9affbdee76ea, iface: enx9affbdee76ea): no ifupdown configuration found.
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> (enx9affbdee76ea): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jan 16 08:22:31 L502X kernel: [ 5399.442941] IPv6: ADDRCONF(NETDEV_UP): enx9affbdee76ea: link is not ready
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> (enx9affbdee76ea): link connected
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> (enx9affbdee76ea): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
Jan 16 08:22:31 L502X NetworkManager[1070]: <info> Device 'enx9affbdee76ea' has no connection; scheduling activate_check in 0 seconds.
Jan 16 08:22:31 L502X kernel: [ 5399.458876] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 16 08:22:31 L502X kernel: [ 5399.458904] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 16 08:22:31 L502X kernel: [ 5399.469062] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 16 08:22:31 L502X kernel: [ 5399.469088] [UFW BLOCK] IN=enp6s0 OUT= MAC= SRC=fe80:0000:0000:0000:16fe:b5ff:febb:2732 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 16 08:22:33 L502X ModemManager[1081]: <info> Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1': not supported by any plugin
Jan 16 08:22:35 L502X colord-sane: io/hpmud/musb.c 2081: Invalid usb_open: Permission denied
更新 #2：通过 GUFW 禁用防火墙后，获得新鲜的系统日志：
Jan 16 09:33:23 L502X kernel: [ 9649.766835] usb 1-1: new high-speed USB device number 6 using xhci_hcd
Jan 16 09:33:23 L502X kernel: [ 9649.900519] usb 1-1: New USB device found, idVendor=18d1, idProduct=4ee2
Jan 16 09:33:23 L502X kernel: [ 9649.900529] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jan 16 09:33:23 L502X kernel: [ 9649.900534] usb 1-1: Product: Nexus 5X
Jan 16 09:33:23 L502X kernel: [ 9649.900538] usb 1-1: Manufacturer: LGE
Jan 16 09:33:23 L502X kernel: [ 9649.900542] usb 1-1: SerialNumber: 00f204f982a4b8b9
Jan 16 09:33:23 L502X org.gtk.Private.GPhoto2VolumeMonitor[1780]: (process:2108): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring
Jan 16 09:33:24 L502X org.gtk.Private.GPhoto2VolumeMonitor[1780]: (process:2108): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring
Jan 16 09:33:24 L502X colord[1165]: (colord:1165): Cd-WARNING **: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/ColorManager/devices/sysfs__null_
Jan 16 09:33:26 L502X kernel: [ 9652.898664] usb 1-1: USB disconnect, device number 6
Jan 16 09:33:26 L502X kernel: [ 9653.233755] usb 1-1: new high-speed USB device number 7 using xhci_hcd
Jan 16 09:33:26 L502X kernel: [ 9653.367239] usb 1-1: New USB device found, idVendor=18d1, idProduct=4ee4
Jan 16 09:33:26 L502X kernel: [ 9653.367249] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jan 16 09:33:26 L502X kernel: [ 9653.367254] usb 1-1: Product: Nexus 5X
Jan 16 09:33:26 L502X kernel: [ 9653.367258] usb 1-1: Manufacturer: LGE
Jan 16 09:33:26 L502X kernel: [ 9653.367262] usb 1-1: SerialNumber: 00f204f982a4b8b9
Jan 16 09:33:26 L502X kernel: [ 9653.375259] rndis_host 1-1:1.0 usb0: register 'rndis_host' at usb-0000:04:00.0-1, RNDIS device, 4e:8a:8f:3f:b7:cb
Jan 16 09:33:26 L502X NetworkManager[1070]: <warn> (usb0): failed to find device 5 'usb0' with udev
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> (usb0): new Ethernet device (carrier: OFF, driver: 'rndis_host', ifindex: 5)
Jan 16 09:33:26 L502X mtp-probe: checking bus 1, device 7: "/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1"
Jan 16 09:33:26 L502X mtp-probe: bus: 1, device: 7 was not an MTP device
Jan 16 09:33:26 L502X kernel: [ 9653.420245] rndis_host 1-1:1.0 enx4e8a8f3fb7cb: renamed from usb0
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> (usb0): interface index 5 renamed iface from 'usb0' to 'enx4e8a8f3fb7cb'
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> devices added (path: /sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1/1-1:1.0/net/enx4e8a8f3fb7cb, iface: enx4e8a8f3fb7cb)
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> device added (path: /sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1/1-1:1.0/net/enx4e8a8f3fb7cb, iface: enx4e8a8f3fb7cb): no ifupdown configuration found.
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> (enx4e8a8f3fb7cb): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> (enx4e8a8f3fb7cb): link connected
Jan 16 09:33:26 L502X kernel: [ 9653.447746] IPv6: ADDRCONF(NETDEV_UP): enx4e8a8f3fb7cb: link is not ready
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> (enx4e8a8f3fb7cb): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
Jan 16 09:33:26 L502X NetworkManager[1070]: <info> Device 'enx4e8a8f3fb7cb' has no connection; scheduling activate_check in 0 seconds.
Jan 16 09:33:27 L502X colord-sane: io/hpmud/musb.c 2081: Invalid usb_open: Permission denied
Jan 16 09:33:28 L502X ModemManager[1081]: <info> Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0/usb1/1-1': not supported by any plugin
更新 #3：route -n启用 USB 网络共享后，之后sudo dhclient ...：
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 enx16d44e6a2773
192.168.42.0 0.0.0.0 255.255.255.0 U 0 0 0 enx16d44e6a2773
答案1
好吧，感谢贝恩开始回答，你几乎解决了它:)
按照你说的做了，你还是不能上网，也不能做诸如此类的事情ping google.com，很烦人。
但是，一切看起来都正常（路由、ifconfig、/etc/resolv.conf 指向 127.0.1.1……）。为了确保万无一失，我尝试 ping 一个来自谷歌的已知 IP（206.169.145.232），成功了！该死，我不知道为什么 DNS 也坏了，但您可以使用临时解决方法，即编辑 /etc/resolv.conf，将 127.0.1.1 替换为 8.8.8.8（甚至添加第二行nameserver 8.8.4.4）。
您已设置完毕，可以再次浏览网页了！
现在，如果有人能弄清楚为什么 kubuntu 15.10（也受到这个错误的影响）不能像以前一样自动执行此操作，那就太好了。
享受。
答案2
实际情况是，您的 USB0 接口已被 rndis_host 驱动程序重命名为 enx4e8a8f3fb7cb。只需编辑您的 /etc/network/interfaces 文件，将 USB0 接口替换为 rdis_host 驱动程序重命名的接口即可。
要在插入手机并激活网络共享功能后找出这一点，请在终端中运行“ifconfig -a”，您将看到新的随机生成的接口，同样您将不再看到 USB0，因为它已被 rndis_host 驱动程序重命名。
答案3
这个问题不是在 Ubuntu 上，我在 Windows 7 上也遇到了同样的问题
由于某种原因，PC 无法通过 DNS 识别 Android 网络，为了解决此问题，您是否在 Android 上使用任何阻止连接应用程序？
如果是，请禁用它，然后尝试使用 USB 网络共享，如果出现同样的问题，请执行以下操作：
- 从 Google Play 安装（设置 DNS 或 DNS 更改器）
设置 Google DNS
DNS1：8.8.8.8
DNS2：8.8.4.4
然后按连接，之后尝试启用 USB 网络共享。
它应该有效