On Mon, Jan 02, 2006 at 11:58:46PM +0100, Wolfgang Mader wrote: > I have installed the debian distribution kernel (2.6.14-2) and I have > attached > an usb2 harddisk to an usb2 port on my linuxbox (sounds good till here). > Now I want to know how to check if my computer uses usb2. > The problem is that there is a really bad transmisson rate to the harddisk > (about 1 mb/s) and I am not sure where to start searching.
Check the kernel log (from dmesg, or /var/log/kern.log). When the device is first attached you should see something like these: usb 3-5: new high speed USB device using ehci_hcd and address 27 usb 2-1: new full speed USB device using ohci_hcd and address 18 "high speed" means USB 2.0, "full speed" means USB 1.1. I think there is also half speed 1.1. Alternatively, while the device is plugged in run "lsusb -v" and look at the "bcdUSB" field which seems to indicate 1.10 or 2.00. Hamish -- Hamish Moffatt VK3SB <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
