我有一个网络摄像头,它有一个 USB 端口。每次我插入电缆时,它都会显示(来自 dmesg):
[74305.563588] usb 3-1-port4: attempt power cycle
[74306.167275] usb 3-1.4: new low-speed USB device number 73 using xhci_hcd
[74306.167913] usb 3-1.4: Device not responding to setup address.
[74306.375926] usb 3-1.4: Device not responding to setup address.
[74306.583278] usb 3-1.4: device not accepting address 73, error -71
[74306.663298] usb 3-1.4: new low-speed USB device number 74 using xhci_hcd
[74306.663912] usb 3-1.4: Device not responding to setup address.
[74306.871921] usb 3-1.4: Device not responding to setup address.
[74307.079208] usb 3-1.4: device not accepting address 74, error -71
[74307.079468] usb 3-1-port4: unable to enumerate USB device
好的,据我所知,这是一个过流问题。我将设备放在有源 (3Amp) USB 集线器上,但我仍然遇到同样的问题。
我不想使用相机的网络组件,它有一个回调功能,可以将数据流传输到 OEM 的服务器,这让我很不满意,
我还能尝试什么方法让这个东西通过 USB 工作?这个相机是 guardzilla 相机 好的,我做了一些侦查,这可能是一个内核错误,我正在阅读此 Launchpad 主题,但我不清楚是否有补丁,或者如何修复它。
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
我的内核是:4.15.0-30-generic