我正在尝试将基于 Beaglebone Black 的定制开发板插入我的 Linux PC。
以下是我收到的 dmesg 错误(运行 Ubuntu 12.04):
[424595.900132] usb 5-2: new full-speed USB device number 4 using uhci_hcd
[424596.075024] usb 5-2: unable to read config index 0 descriptor/all
[424596.075032] usb 5-2: can't read configurations, error -71
[424596.188220] usb 5-2: new full-speed USB device number 5 using uhci_hcd
[424596.251145] usb 5-2: unable to read config index 0 descriptor/all
[424596.251158] usb 5-2: can't read configurations, error -71
[424596.364184] usb 5-2: new full-speed USB device number 6 using uhci_hcd
[424596.422150] usb 5-2: unable to read config index 0 descriptor/all
[424596.422164] usb 5-2: can't read configurations, error -71
[424596.423023] hub 5-0:1.0: unable to enumerate USB device on port 2
我一直在寻找有关此错误的信息,但发现的信息很少。有人知道这个错误是什么意思吗?
由于这是一个使 USB0 上的以太网工作的练习,我们的主板上没有对闪存进行任何编程,而且我们也没有使用 SD 卡。
任何信息都会有帮助。谢谢