如何通过 USB 将 Raspberry Pi Zero 连接到 Ubuntu 笔记本电脑？

Question

我尝试按照此处显示的说明进行操作，希望我能够在不购买 USB 键盘、鼠标和显示器的情况下使用我的 Raspberry Pi Zero。

这样做之后，我无法通过 ssh 连接到 Raspberry Pi Zero。我得到的输出是：

ssh: Could not resolve hostname raspberrypi.local: Name or service not known

我试过 dmesg 并看到以下内容：

[ 2060.683489] usb 2-1: new high-speed USB device number 6 using xhci_hcd
[ 2065.979176] usb 2-1: new high-speed USB device number 7 using xhci_hcd
[ 2066.108051] usb 2-1: New USB device found, idVendor=0525, idProduct=a4a2
[ 2066.108056] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2066.108058] usb 2-1: Product: RNDIS/Ethernet Gadget
[ 2066.108060] usb 2-1: Manufacturer: Linux 4.4.21+ with 20980000.usb
[ 2066.233624] cdc_subset: probe of 2-1:1.0 failed with error -22
[ 2066.234408] cdc_subset 2-1:1.1 usb0: register 'cdc_subset' at usb-0000:00:14.0-1, Linux Device, 6a:2b:ee:30:07:6e
[ 2066.235273] usbcore: registered new interface driver cdc_subset
[ 2066.236484] cdc_ether: probe of 2-1:1.0 failed with error -16
[ 2066.236507] usbcore: registered new interface driver cdc_ether
[ 2066.238455] cdc_subset 2-1:1.1 enp0s20u1i1: renamed from usb0
[ 2066.264145] IPv6: ADDRCONF(NETDEV_UP): enp0s20u1i1: link is not ready
[ 2066.264275] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2066.264281] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2066.264627] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2066.265568] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2066.265575] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2066.274193] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2111.934891] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2111.934898] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2111.936117] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2111.948226] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2111.948247] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped
[ 2111.948251] cdc_subset 2-1:1.1 enp0s20u1i1: kevent 12 may have been dropped

任何人都可以阐明这些日志的含义吗？广泛的谷歌搜索对我没有任何结果。

我在联想 Z50 上使用 Ubuntu 16.04.1 LTS 64 位（运行 Ubuntu，但有点狡猾，这可能是我在这台笔记本电脑上遇到的大多数问题的根源）。我也尝试过使用 Windows 笔记本电脑。这在我安装了 Apple 的 Bonjour 软件后起作用了。

ifconfig 的输出表明该设备没有 IP 地址，所以我不确定我将如何连接到它。

enp0s20u3 Link encap:Ethernet  HWaddr ce:77:fe:7a:9f:66  
          inet6 addr: fe80::7af9:c911:f518:cede/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:30 errors:0 dropped:0 overruns:0 frame:0
          TX packets:84 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5660 (5.6 KB)  TX bytes:13989 (13.9 KB)

谢谢！

更新：

当心这条线以下的所有东西的红鲱鱼

好的，所以我下载了 linux 内核源代码（最新的稳定版本 v4.8.11）并进行了一些 grepping。

我发现在一个名为“usbnet_defer_kevent”的函数中抛出了“Kevent blah may have beendropped”。

/* some work can't be done in tasklets, so we use keventd
 *
 * NOTE:  annoying asymmetry:  if it's active, schedule_work() fails,
 * but tasklet_schedule() doesn't.  hope the failure is rare.
 */
void usbnet_defer_kevent (struct usbnet *dev, int work)
{
    set_bit (work, &dev->flags);
    if (!schedule_work (&dev->kevent)) {
        if (net_ratelimit())
            netdev_err(dev->net, "kevent %d may have been dropped\n", work);
    } else {
        netdev_dbg(dev->net, "kevent %d scheduled\n", work);
    }
}
EXPORT_SYMBOL_GPL(usbnet_defer_kevent);

我发现usbnet_defer_kevent(dev, EVENT_SET_RX_MODE);在几个地方被抛出，结果我们在 usbnet.h 中像这样定义了它# define EVENT_SET_RX_MODE 12。不确定是什么EVENT_SET_RX_MODE（好吧。不是它应该枚举的）所以如果有人可以帮助解决这个问题，请做。

cdc_subset：blah 的探测失败，错误blah在 drivers/base/dd.c 的“really_probe”中被调用。看起来 linux 通过使用驱动程序“探测”设备来测试驱动程序以查看它们是否合适。反正这是我的猜测。需要找出“-22”和“-16”是什么。

怀疑：我没有安装合适的驱动程序

无论如何，我会继续努力。

附：很抱歉这里的信息不连贯。我有点用它作为我自己挖掘的记事本。

Answer 1

您需要进入网络管理器菜单，编辑连接...并编辑新的以太网连接（对我来说是“有线连接 2”）。切换到 IPv4 选项卡，并将方法更改为“仅本地链接”。单击保存，然后单击关闭。

然后 usb0 网络接口将被分配一个 169.254.xy 地址，“ssh pi@raspberrypi.local”将正常工作。