Thinkpad T61p and USB 1.1 or 2.0

Hello, I was playing around with the usbtree utility ( http://www.linux-usb.org/usbtree) and found that all of the external USB ports on T61p (6459-CTO) are USB 1.1. I tested this by plugging in a wireless mouse with a USB dongle (Logitech VX Nano). Observe:

Nothing plugged in:

Code:

user@gamera:~/Public$ ./usbtree 
/: Bus 07.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/6p, 480M
/: Bus 06.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/4p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 2: Dev 3, If 0, Prod=Biometric Coprocessor, Class=vend., Drv=none, 12M

Right-bottom

Code:

user@gamera:~/Public$ ./usbtree 
/: Bus 07.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/6p, 480M
/: Bus 06.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 1: Dev 2, If 0, Prod=USB Receiver, Class=HID, Drv=usbhid, 1.5M
    |_ Port 1: Dev 2, If 1, Prod=, Class=HID, Drv=usbhid, 1.5M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/4p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 2: Dev 3, If 0, Prod=Biometric Coprocessor, Class=vend., Drv=none, 12M

Right-top

Code:

user@gamera:~/Public$ ./usbtree 
/: Bus 07.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/6p, 480M
/: Bus 06.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 2: Dev 3, If 0, Prod=USB Receiver, Class=HID, Drv=usbhid, 1.5M
    |_ Port 2: Dev 3, If 1, Prod=, Class=HID, Drv=usbhid, 1.5M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/4p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 2: Dev 3, If 0, Prod=Biometric Coprocessor, Class=vend., Drv=none, 12M

Left

Code:

user@gamera:~/Public$ ./usbtree 
/: Bus 07.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/6p, 480M
/: Bus 06.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/4p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 1: Dev 2, If 0, Prod=USB Receiver, Class=HID, Drv=usbhid, 1.5M
    |_ Port 1: Dev 2, If 1, Prod=, Class=HID, Drv=usbhid, 1.5M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M
    |_ Port 2: Dev 3, If 0, Prod=Biometric Coprocessor, Class=vend., Drv=none, 12M

Note how all the ports that are usable are 12M. What's going on? Maybe the usbtree output is wrong?

Can others try running the script? You might have to mount usbfs. (See https://help.ubuntu.com/community/VirtualBox#USB)

 

Interesting. I was just poking around and noticed that my T61 was doing the same thing with Ubuntu 8.04. With Ubuntu 8.10, ehci_hcd is loaded properly, at least on my media center machine. I'll have to check my personal laptop when I get home.

You don't need to use usbfs or usbtree to check this, you can just grep dmesg output for "usb", and it will tell you if a device that you plugged in is detected as "low speed" (HID devices), "full speed" (USB 1.1 12Mbps) or "high speed" (USB2 speeds).

Code:

pita@pita-t61:~$ dmesg | grep "high speed"
[   21.198230] usb 4-2: new high speed USB device using ehci_hcd and address 2
[18648.783905] usb 4-2: new high speed USB device using ehci_hcd and address 2
[18659.876950] usb 4-1: new high speed USB device using ehci_hcd and address 5
pita@pita-t61:~$ dmesg | grep "low speed"
[   22.174485] usb 4-2.2: new low speed USB device using ehci_hcd and address 3
[   22.470713] usb 4-2.3: new low speed USB device using ehci_hcd and address 4
[   41.117223] usb 5-2.2: new low speed USB device using uhci_hcd and address 3
[   41.531998] usb 5-2.3: new low speed USB device using uhci_hcd and address 4
[ 8823.745364] usb 5-2.2: new low speed USB device using uhci_hcd and address 7
[ 8823.936993] usb 5-2.3: new low speed USB device using uhci_hcd and address 8
[18649.223532] usb 4-2.2: new low speed USB device using ehci_hcd and address 3
[18649.579791] usb 4-2.3: new low speed USB device using ehci_hcd and address 4
pita@pita-t61:~$ dmesg | grep "full speed"
[   21.801854] usb 1-1: new full speed USB device using uhci_hcd and address 2
[   40.616327] usb 5-2: new full speed USB device using uhci_hcd and address 2
[ 6816.771013] usb 5-1: new full speed USB device using uhci_hcd and address 5
[ 8823.587143] usb 5-2: new full speed USB device using uhci_hcd and address 6
[18516.747527] usb 5-1: new full speed USB device using uhci_hcd and address 9
[18647.848270] usb 1-1: new full speed USB device using uhci_hcd and address 3
dkopp@dkopp-t61:~$

To fix it, you can just run "sudo modprobe ehci_hcd", and you'll notice in dmesg that USB2 devices are detected as high-speed rather than full or low-speed.

To make the change permanent, simply add "ehci_hcd" as the last line in the "/etc/modules" file.

Good catch!

 

Seems this is a false alarm. I plugged in a USB hard drive and usb tree shows the proper speed. I officially proclaim myself full of fail.

 

I wouldn't. usb_ehci wasn't loading for me, and my USB stick wasn't transferring at full speed on 8.04, so it may just be a intermittent issue or something