Here's the relevant lsusb and dmesg outputs. I'm using a M-Audio FastTrack audio interface. As you can see, the interface is recognized and shows up in lsusb and dmesg when plugged into the USB3.0 port, but is not when plugged into the USB2.0 ports.
BEFORE ubuntu@ubuntu:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f3:002d Elan Microelectronics Corp. Bus 001 Device 006: ID 0489:e036 Foxconn / Hon Hai Bus 001 Device 005: ID 05ca:18c4 Ricoh Co., Ltd USB 3.0 ubuntu@ubuntu:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 003 Device 002: ID 0763:2024 Midiman M-Audio Fast Track MKII Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f3:002d Elan Microelectronics Corp. Bus 001 Device 006: ID 0489:e036 Foxconn / Hon Hai Bus 001 Device 005: ID 05ca:18c4 Ricoh Co., Ltd ubuntu@ubuntu:~$ dmesg [ 317.613413] usb 3-1: new full-speed USB device number 2 using xhci_hcd [ 318.037335] usb 3-1: New USB device found, idVendor=0763, idProduct=2024 [ 318.037346] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 318.037351] usb 3-1: Product: Fast Track [ 318.037356] usb 3-1: Manufacturer: M-Audio [ 320.666728] usbcore: registered new interface driver snd-usb-audio USB2.0 ubuntu@ubuntu:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f3:002d Elan Microelectronics Corp. Bus 001 Device 006: ID 0489:e036 Foxconn / Hon Hai Bus 001 Device 005: ID 05ca:18c4 Ricoh Co., Ltd ubuntu@ubuntu:~$ dmesg [ 384.022264] usb 3-1: USB disconnect, device number 2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1172908 Title: USB 2.0 Ports Dont Work on Sony Vaio Laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1172908/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
