Hi Hans, > Can you tell a little more about what we need to look for. > Perhaps a sample with a good and one with a 'bad' hub?
Hmm, I just checked and didn't find anything in dmesg. I guess it was there before because I had USB debugging enabled in my kernel then. Anyway, it seems lsusb -v does show this in the bDeviceProtocl field: matth...@xanthe:~$ sudo lsusb -v |grep bDeviceProtocol.*TT bDeviceProtocol 2 TT per port bDeviceProtocol 2 TT per port bDeviceProtocol 1 Single TT (Note that this means the value of the field is 2, which means "TT per port", not that there are 2 TT's per port) The iProduct field also makes a reference for my multi TT hub: iProduct 1 USB 2.0 Hub [MTT] Some reference about TT's: http://www.tomshardware.com/reviews/usb-technology,677-3.html Gr. Matthijs
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