Hi all. I have a dell inspiron n411z laptop.
It has 2 usb3 ports and one usb2 port.
I have installed ubuntu 12.04.
I am getting internet through a huawei e173 dongle of O2. (I don't know if this is relevant).
While the dongle is recognized by both ports (the light comes up and I get results from lsusb), it only works and comes up in network manager in the usb2 port.
It is not a problem of the dongle because in windows7 it works in all ports. (so probably is not a Dell matter either).
I have read in google that there is somekind of problem with the usb3 ports in ubuntu 12.04. It affects also external usb hard drives etc.
For your reference I will state below the lsusb results of the dongle when plugged in usb2 and when plugged in usb3.
Bus 003 Device 003: ID 12d1:1446 Huawei Technologies Co., Ltd. E1552/E1800 (HSPA modem)
As you see, it has a different ID and a different description which is very very odd. Is this somekind of bug?
Bus 002 Device 005: ID 12d1:1436 Huawei Technologies Co., Ltd.
Any help or advise will be greatly appreciated.