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Supper slow USB disk




Hi everyone

I have an issue with the speed of my USB3 Trancend disk, while I am using my motherboard with USB2 ports (and also
some usb1 ports). It seems it is using usb1 driver for my usb disk, and
because of that, I am expericing a very slow speed. I have to mention
that using an Ubuntu live CD I can have the normal speed. Any kind of
help would be really appreciated.


here is the output of my `lsusb`:

Bus 004 Device 002: ID 0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 004: ID 8564:1000 Transcend Information, Inc. JetFlash
Bus 003 Device 002: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 24ae:2000  
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub


here is the output of my `lsbusb -t`:

/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 1: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 12M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
    |__ Port 2: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8188eu, 480M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
    |__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M
    |__ Port 4: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M

and this is the output of `lsmod | grep hci`:

ehci_pci               16384  0
uhci_hcd               45056  0
ehci_hcd               81920  1 ehci_pci
usbcore               245760  7 usbhid,usb_storage,ehci_hcd,uhci_hcd,uas,8188eu,ehci_pci

-- 
Regards,
Mostafa Shahverdy <http://www.mostafa.info/pgp>

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