/dev/ttyUSB0 不存在

Question

我在将 UPS 连接到 USB 端口时遇到问题。这是来自我的系统的信息。

warun@Warun-DDPC:~ $uname -a
Linux Warun-DDPC 3.8.0-27-generic #40-Ubuntu SMP Tue Jul 9 00:17:05 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

warun@Warun-DDPC:~ $cat /etc/issue
Ubuntu 13.04 \n \l

warun@Warun-DDPC:~ $lsusb |grep Serial
Bus 002 Device 007: ID 0665:5161 Cypress Semiconductor USB to Serial

通过重新连接电缆确认这是该设备

dmesg：

[72169.451629] USB 2-1.6：使用 ehci-pci 的新低速 USB 设备编号 7
[72169.549517] USB 2-1.6：发现新的 USB 设备，idVendor=0665，idProduct=5161
[72169.549522] USB 2-1.6：新 USB 设备字符串：Mfr=1，Product=2，SerialNumber=0
[72169.549524] USB 2-1.6：产品：USB转串口
[72169.549527] USB 2-1.6：制造商：INNO TECH
[72169.554498] hid-generic 0003:0665:5161.000D: hiddev0,hidraw7: USB HID v1.00 Device [INNO TECH USB to Serial] on usb-0000:00:1d.0-1.6/input0
[72685.019094] usbcore：注册新的接口驱动程序usbserial
[72685.019104] usbcore：注册新的接口驱动程序usbserial_generic
[72685.019110] usbserial：为通用注册的 USB 串行支持

来自/sys/devices/：

warun@Warun-DDPC:~ $ls -ltrad /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6
drwxr-xr-x 5 root root 0 Aug 19 14:27 /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6
warun@Warun-DDPC:~ $ls /sys/bus/usb/devices/ -ltrah
共 0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 usb4 -> ../../../devices/pci0000:00/0000:00:14.0/usb4
lrwxrwxrwx 1 root root 0 Aug 19 14:27 usb3 -> ../../../devices/pci0000:00/0000:00:14.0/usb3
lrwxrwxrwx 1 root root 0 Aug 19 14:27 usb2 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2
lrwxrwxrwx 1 root root 0 Aug 19 14:27 usb1 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1
lrwxrwxrwx 1 root root 0 Aug 19 14:27 4-0:1.0 -> ../../../devices/pci0000:00/0000:00:14.0/usb4/4-0:1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 3-0:1.0 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-0:1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 2-0:1.0 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-0:1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-0:1.0 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-0:1.0
drwxr-xr-x 4 root root 0 Aug 19 14:27 ..
drwxr-xr-x 2 根根 0 Aug 19 14:27 。
lrwxrwxrwx 1 root root 0 Aug 19 14:27 2-1:1.0 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1: 1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 2-1 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.1:1.1 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/ 1-1.1:1.1
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.1:1.0 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/ 1-1.1:1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1:1.0 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1: 1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.1 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.2 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.6:1.0 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/ 1-1.6:1.0
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.6 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.2:1.2 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/ 1-1.2:1.2
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.2:1.1 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/ 1-1.2:1.1
lrwxrwxrwx 1 root root 0 Aug 19 14:27 1-1.2:1.0 -> ../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/ 1-1.2:1.0
lrwxrwxrwx 1 root root 0 Aug 20 10:30 3-3.3 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3.3
lrwxrwxrwx 1 root root 0 Aug 20 10:30 3-3 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-3
lrwxrwxrwx 1 root root 0 Aug 20 10:30 2-1.6 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6
lrwxrwxrwx 1 root root 0 Aug 20 10:30 2-1.5 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5
lrwxrwxrwx 1 root root 0 Aug 20 10:31 3-3.3:1.1 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3.3/3- 3.3:1.1
lrwxrwxrwx 1 root root 0 Aug 20 10:31 3-3.3:1.0 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3.3/3- 3.3:1.0
lrwxrwxrwx 1 root root 0 Aug 20 10:31 3-3:1.0 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.0
lrwxrwxrwx 1 root root 0 Aug 20 10:31 2-1.6:1.0 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/ 2-1.6:1.0
lrwxrwxrwx 1 root root 0 Aug 20 10:31 2-1.5:1.0 -> ../../../devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/ 2-1.5:1.0

但是，它没有显示任何/dev/ttyUSB*. 我不确定我在这里错过了什么。

Answer 1

• 可能它是用另一个名称创建的。检查是否存在/dev按照如何允许软件访问任何 USB 设备？ 的说明创建的节点。

• 正如 Jakob 在评论中所说，似乎新设备已绑定usbhid驱动程序。您可以使用以下方法检查：

  lsusb -t
  

• 使用另一种方法来检查所有内容udevadm

  1. 拔掉插头

  2. 运行 udev 监视器

     sudo udevadm monitor -u
     

  3. 复制最长的路径，用它来获取所有需要的信息

     sudo udevadm info -a --path=/sys/<thatpath>