有一个USB设备挂不上

bjsm

我的车载MP3,我插入USB口前运行lsusb
lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 15d9:0a37 Unknown Mouse
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

插入后
lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 018: ID 04fc:2350 Sunplus Technology Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 15d9:0a37 Unknown Mouse
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

应该是Bus 002 Device 018: ID 04fc:2350 Sunplus Technology Co., Ltd 这个设备吧，怎么挂载呢？硬盘是/dev/sda,按道理这个设备应该是/dev/sdb才对啊。找不到sdb。

bjsm

在XP下可以认得。
插入前
ubuntu-bjsm linux # dmesg|tail
usb-storage: -- sending exit command to thread
usb-storage: *** thread awakened.
usb-storage: -- exiting
usb-storage: -- dissociate_dev
usb 2-3:1.0: uevent
usb 2-3: uevent
hub 2-0:1.0: debounce: port 3: total 100ms stable 100ms status 0x100
hub 2-0:1.0: hub_suspend
usb usb2: bus auto-suspend
ehci_hcd 0000:00:12.2: suspend root hub
插入后
ubuntu-bjsm linux # dmesg|tail
usb-storage: -- associate_dev
usb-storage: Vendor: 0x04fc, Product: 0x2350, Revision: 0x0100
usb-storage: Interface Subclass: 0x06, Protocol: 0x50
usb-storage: Transport: Bulk
usb-storage: Protocol: Transparent SCSI
scsi12 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 28
usb-storage: waiting for device to settle before scanning
drivers/usb/core/inode.c: creating file '028'
usb-storage: *** thread sleeping.

LongerZ

这个不好说的。现在的优盘不是加密就是加密，而且是Windows"专用“。