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ccs v5.4 on ubuntu 12.04:No USB FET was found

Other Parts Discussed in Thread: MSP430G2553

I install ccs v5.4 for MSP430 by root in my laptop which run a ubuntu 12.04,and install the drive "install_drives.sh",no error when I install ccs v5.4.But when I debug a program in msp430g2553,ccs tell me "No USB FET was found",I check something:

klmk-123@klmk123-ThinkPad-E420:~$ lsusb                                                                                                                                          Bus 001 Device 007: ID 0451:f432 Texas Instruments, Inc. eZ430 Development Tool

klmk-123@klmk123-ThinkPad-E420:~$ lsusb -t
/: Bus 02.Port 1: Dev 1, class="root_hub", Driver=ehci_hcd/2p, 480M
/: Bus 01.Port 1: Dev 1, class="root_hub", Driver=ehci_hcd/2p, 480M
|__ Port 1: Dev 2, If 0, class="hub", Driver=hub/6p, 480M
      |__ Port 2: Dev 3, If 0, class="hub", Driver=hub/4p, 480M
            |__ Port 3: Dev 5, If 0, class="HID", Driver=usbhid, 1.5M
            |__ Port 3: Dev 5, If 1, class="HID", Driver=usbhid, 1.5M
            |__ Port 4: Dev 6, If 0, class="HID", Driver=usbhid, 1.5M
      |__ Port 3: Dev 8, If 0, class="comm"., Driver=cdc_acm, 12M
      |__ Port 3: Dev 8, If 1, class="HID", Driver=usbhid, 12M

klmk-123@klmk123-ThinkPad-E420:~$ lsusb -v                                                                                                                                         Bus 001 Device 009: ID 0451:f432 Texas Instruments, Inc. eZ430 Development Tool Device Descriptor:

idVendor 0x0451 Texas Instruments, Inc.
idProduct 0xf432 eZ430 Development Tool
bcdDevice 1.05
iManufacturer 1 Texas Instruments
iProduct 2 Texas Instruments MSP-FET430UIF

bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 5 MSP430 Application UART

bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 4 MSP430 Debug-Interface

What should I do to make my MSP-EXP430G2 work on ubuntu 12.04?

PS:My English is still poor,hope you can understand my description,thanks