![为什么没有列出我的打印机?](https://linux22.com/image/1318164/%E4%B8%BA%E4%BB%80%E4%B9%88%E6%B2%A1%E6%9C%89%E5%88%97%E5%87%BA%E6%88%91%E7%9A%84%E6%89%93%E5%8D%B0%E6%9C%BA%EF%BC%9F.png)
为什么使用 lsusb 命令时没有列出我的打印机?
我在 Ubuntu 12.04 上通过 USB 连接了一台 HP Photosmart C4780。我安装了 hplip,但问题仍然没有解决。打印机未显示在打印机列表中。
我如何添加打印机?
谢谢。
编辑-使用 dmesg | tail -f:
连接打印机之前
[15358.944014] usb 1-1.4: device descriptor read/all, error -71
[15359.015787] usb 1-1.4: new high-speed USB device number 12 using ehci_hcd
[15359.119684] usb 1-1.4: device descriptor read/all, error -71
[15359.191166] usb 1-1.4: new high-speed USB device number 13 using ehci_hcd
[15359.223171] usb 1-1.4: device descriptor read/8, error -71
[15359.354968] usb 1-1.4: device descriptor read/8, error -71
[15359.530444] usb 1-1.4: new high-speed USB device number 14 using ehci_hcd
[15359.562288] usb 1-1.4: device descriptor read/8, error -71
[15359.694434] usb 1-1.4: device descriptor read/8, error -71
[15359.797753] hub 1-1:1.0: unable to enumerate USB device on port 4
插入后:
[15498.352933] usb 1-1.4: device descriptor read/all, error -71
[15498.424509] usb 1-1.4: new high-speed USB device number 16 using ehci_hcd
[15498.528717] usb 1-1.4: device descriptor read/all, error -71
[15498.600251] usb 1-1.4: new high-speed USB device number 17 using ehci_hcd
[15498.632144] usb 1-1.4: device descriptor read/8, error -71
[15498.763804] usb 1-1.4: device descriptor read/8, error -71
[15498.939336] usb 1-1.4: new high-speed USB device number 18 using ehci_hcd
[15498.971263] usb 1-1.4: device descriptor read/8, error -71
[15499.103217] usb 1-1.4: device descriptor read/8, error -71
[15499.206663] hub 1-1:1.0: unable to enumerate USB device on port 4