#dmesg 如下:
usb 2-2: new high speed USB device using ehci_hcd and address 4
ehci_hcd 0000:00:1d.7: port 2 reset error -110
hub 2-0:1.0: hub_port_status failed (err = -32)
hub 2-0:1.0: unable to enumerate USB device on port 2
usb 6-2: new full speed USB device using uhci_hcd and address 2
usb 6-2: New USB device found, idVendor=1234, idProduct=5678
usb 6-2: New USB device strings: Mfr=16, Product=32, SerialNumber=96
usb 6-2: Product: FUSB200
usb 6-2: Manufacturer: GENERIC INC.
usb 6-2: SerialNumber: 01234567890C
usb 6-2: configuration #1 chosen from 1 choice
Initializing USB Mass Storage driver...
scsi4 : SCSI emulation for USB Mass Storage devices
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usbcore: registered new interface driver usbtouchscreen
usb-storage: device scan complete
scsi 4:0:0:0: Direct-Access Generic Audio Product v2.0 PQ: 0 ANSI: 2
sd 4:0:0:0: Attached scsi generic sg2 type 0
sd 4:0:0:0: [sdb] 8388352 512-byte logical blocks: (4.29 GB/3.99 GiB)
sd 4:0:0:0: [sdb] Write Protect is off
sd 4:0:0:0: [sdb] Mode Sense: 20 00 00 00
sd 4:0:0:0: [sdb] Assuming drive cache: write through
sd 4:0:0:0: [sdb] Assuming drive cache: write through
sdb:
sd 4:0:0:0: [sdb] Assuming drive cache: write through
sd 4:0:0:0: [sdb] Attached SCSI removable disk
usb 6-2: reset full speed USB device using uhci_hcd and address 2
usb 6-2: device descriptor read/64, error -110
不知是何原因，还请帮忙解决。
系统：fedora 12 x86_64 usb设备：4G.
caoyu1099 于 2010-09-28 09:08:47发表:
7# alick
虚拟机关闭了，还是不行，不知是啥原因
alick 于 2010-09-27 23:55:48发表:
错误代号可以google看一下。
虚拟机里什么系统？会不会虚拟机把USB独占了？（如果是virtualbox里安装了xp的话，是会的。
需要先让虚拟机里的系统释放设备，外部的linux才会去挂载它）
caoyu1099 于 2010-09-27 22:33:24发表:
求帮助
caoyu1099 于 2010-09-27 20:33:33发表:
4# shenhao0129
fdisk -l 看不到
shenhao0129 于 2010-09-27 20:09:37发表:
fdisk -l 能看到麻？
caoyu1099 于 2010-09-27 14:02:35发表:
2# alick
可以识别，但显示不了是什么原因呢？“device descriptor read/64, error -110“ 是什么原因？有没有可能是问题的关键？计算机可以识别，并且在虚拟机里已经可以添加，为什么无法显示？？
alick 于 2010-09-27 13:39:06发表:
倒数第5行表示读取的分区表为空，正常的话应该sdb: sdb1的。
原因大概是设备分区不标准。里面没有重要东西的话可以考虑在linux下格式化一下。