USB - Is it 1 or 2?

[wmrobins]

I've notice with prior versions that the USB port is a little slow. With Karmic, it seems to be a little slower. How do I tell if the the device is being recognized as USB 2 and if it is being driven as USB 2?

Thanks in advance,

wmrobins

[Snowhog]

Re: USB - Is it 1 or 2?

Open a console and type:

sudo lsusb | grep USB

[vinnywright]

Re: USB - Is it 1 or 2?

ok so when I try that I get

vinny@desktop:~$ sudo lsusb | grep USB
[sudo] password for vinny:
vinny@desktop:~$

but withought the grep

vinny@desktop:~$ sudo lsusb
Bus 004 Device 002: ID 0a48:3239 I/O Interconnect Multimedia Card Reader
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
vinny@desktop:~$

and agin withought the sudo

vinny@desktop:~$ lsusb
Bus 004 Device 002: ID 0a48:3239 I/O Interconnect Multimedia Card Reader
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
vinny@desktop:~$

so would the line

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

indicate a USB 2 dvice being driven as sutch?

VINNY

[Snowhog]

Re: USB - Is it 1 or 2?

so would the line

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

indicate a USB 2 dvice being driven as sutch?

VINNY

Yes. That USB device is 2.0 (High-speed)

[Super]

Re: USB - Is it 1 or 2?

So now I am totally confused. My Lenovo T-60 has three usb 2.0 hubs, but Kubuntu only sees one of them as a usb 2.0 and the other two as 1.1. How do I determine which of the three usb ports on the computer is device 1, 2 or 3? Is there a way to convince Kubuntu that all three should be 2.0?

[josefko]

Re: USB - Is it 1 or 2?

How do I determine which of the three usb ports on the computer is device 1, 2 or 3?

Try to copy the same file from a flash disk in each usb port and see the speed in Info window. If the Info window during copying disappears, click on I icon in the system tray.

[kubicle]

Re: USB - Is it 1 or 2?

So now I am totally confused. My Lenovo T-60 has three usb 2.0 hubs, but Kubuntu only sees one of them as a usb 2.0 and the other two as 1.1. How do I determine which of the three usb ports on the computer is device 1, 2 or 3? Is there a way to convince Kubuntu that all three should be 2.0?

AFAIK, All USB 2.0 (EHCI) devices also have a number of (virtual) USB 1.1 (UHCI/OHCI) controllers, which are used if a USB 1.1 device is plugged in. All your three USB-ports should work as USB 2.0 (EHCI) if a capable device is plugged in.

'lspci' should normally report one EHCI controller and a number of UHCI/OHCI controllers.

[Super]

Re: USB - Is it 1 or 2?

Thanks. That clarifies it.