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Old 12-27-2010, 10:09 PM   #1
Porktacular
LQ Newbie
 
Registered: Dec 2010
Posts: 7

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Exclamation Very slow USB transfer speeds - Ubuntu only

Help! I'm at the end of my rope here. And the most frustrating part is, I've found many posts all over the web from others who have had similar problems, but they ALL seem to be older distros and those solutions don't work for me. "Find Similar Threads" only yields one thread, and I don't have the file mentioned in the answer (the original poster didn't either).
EDIT: Found it. But the proposed solution was to make sure that CONFIG_USB_EHCI_TT_NEWSCHED=y was set. Mine is.

Computer: AMD 64 Quad core, USB 2.0 on front bus, dual booting Vista and Ubuntu 10.10
Device: New Sansa Clip+ 8GB mp3 player

Problem: When I transfer files to my mp3 player in Ubuntu, I max out at about 150 KiBbps. It's painfully slow - it takes me half an hour to transfer 300 MB worth of albums. I had similar problems with an older player that may have been usb 1.1, but this one is brand new. And when I switched to Vista (first time in months, thankfully), I was able to transfer the same files at upwards of 3 MBps. I know that flash devices often can't write anywhere near the max speed of USB 2.0, but obviously it can do a whole lot better then 150 KiBps!

So, same hardware, same files, different OS - the problem must be with my Ubuntu config.

lsusb:
Code:
ace@ajg-FQ569AAR-ABA-a6755y:/$ sudo lsusb
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 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 045e:0038 Microsoft Corp. SideWinder Precision 2
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 007: ID 0781:74d1 SanDisk Corp. Sansa Clip+ (msc)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dmesg (I unplug and reinsert the mp3 player):
Code:
[21738.727930] usb 1-6: USB disconnect, address 7
[21800.840046] usb 1-6: new high speed USB device using ehci_hcd and address 8
[21800.930393] hub 1-0:1.0: unable to enumerate USB device on port 6
[21802.632727] usb 1-6: new high speed USB device using ehci_hcd and address 9
[21802.789668] scsi12 : usb-storage 1-6:1.0
[21803.783614] scsi 12:0:0:0: Direct-Access     SanDisk  Sansa Clip+ 8GB  v01. PQ: 0 ANSI: 0
[21803.784112] scsi 12:0:0:1: Direct-Access     SanDisk  Sansa Clip+ 8GB  v01. PQ: 0 ANSI: 0
[21803.785239] sd 12:0:0:0: Attached scsi generic sg2 type 0
[21803.785773] sd 12:0:0:1: Attached scsi generic sg3 type 0
[21803.791597] sd 12:0:0:0: [sdb] 15462400 512-byte logical blocks: (7.91 GB/7.37 GiB)
[21803.798660] sd 12:0:0:0: [sdb] Write Protect is off
[21803.798667] sd 12:0:0:0: [sdb] Mode Sense: 04 00 00 00
[21803.798670] sd 12:0:0:0: [sdb] Assuming drive cache: write through
[21803.801169] sd 12:0:0:1: [sdc] Attached SCSI removable disk
[21803.803339] sd 12:0:0:0: [sdb] Assuming drive cache: write through
[21803.803353]  sdb:
[21803.824949] sd 12:0:0:0: [sdb] Assuming drive cache: write through
[21803.824956] sd 12:0:0:0: [sdb] Attached SCSI removable disk
lsusb verbose:
Code:
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0001 1.1 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ohci_hcd
  iProduct                2 OHCI Host Controller
  iSerial                 1 0000:00:14.5
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval             255
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             2
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
  bPwrOn2PwrGood        2 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0001 1.1 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ohci_hcd
  iProduct                2 OHCI Host Controller
  iSerial                 1 0000:00:13.1
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval             255
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
  bPwrOn2PwrGood        2 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0001 1.1 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ohci_hcd
  iProduct                2 OHCI Host Controller
  iSerial                 1 0000:00:13.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval             255
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
  bPwrOn2PwrGood        2 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0001 1.1 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ohci_hcd
  iProduct                2 OHCI Host Controller
  iSerial                 1 0000:00:12.1
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval             255
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
  bPwrOn2PwrGood        2 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0101 power connect
   Port 3: 0000.0100 power
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 003 Device 002: ID 045e:0038 Microsoft Corp. SideWinder Precision 2
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x045e Microsoft Corp.
  idProduct          0x0038 SideWinder Precision 2
  bcdDevice            1.05
  iManufacturer           1 Microsoft
  iProduct                2 SideWinder Precision 2 Joystick
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           34
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               20mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      73
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0006  1x 6 bytes
        bInterval              10
Device Status:     0x0000
  (Bus Powered)

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0001 1.1 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ohci_hcd
  iProduct                2 OHCI Host Controller
  iSerial                 1 0000:00:12.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval             255
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x0002
    No power switching (usb 1.0)
    Ganged overcurrent protection
  bPwrOn2PwrGood        2 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0303 lowspeed power enable connect
   Port 3: 0000.0100 power
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 002 Device 002: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0bda Realtek Semiconductor Corp.
  idProduct          0x0151 Mass Storage Device (Multicard Reader)
  bcdDevice           51.95
  iManufacturer           1 Generic
  iProduct                2 USB2.0-CRW
  iSerial                 3 20060413092100000
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 CARD READER
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk (Zip)
      iInterface              5 Bulk-In, Bulk-Out, Interface
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ehci_hcd
  iProduct                2 EHCI Host Controller
  iSerial                 1 0000:00:13.2
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             6
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0503 highspeed power enable connect
   Port 3: 0000.0100 power
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0100 power
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 001 Device 007: ID 0781:74d1 SanDisk Corp. Sansa Clip+ (msc)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0781 SanDisk Corp.
  idProduct          0x74d1 Sansa Clip+ (msc)
  bcdDevice           aa.8c
  iManufacturer           1 SanDisk
  iProduct                2 SanDisk Sansa Clip+
  iSerial                 3 9010020F6740B6A80000000000000000
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 config1: Mass Storage only
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk (Zip)
      iInterface              5 ms ifac 1 (SCSI::BULK_ONLY)
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            2.06
  iManufacturer           3 Linux 2.6.35-22-generic ehci_hcd
  iProduct                2 EHCI Host Controller
  iSerial                 1 0000:00:12.2
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             6
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0503 highspeed power enable connect
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled
ace@ajg-FQ569AAR-ABA-a6755y:/$
I'm a newb, so please let me know if more information is needed (or if I've posted too much crap!)

Thanks!!!
Last edited by Porktacular; 12-27-2010 at 10:32 PM.
 
Old 12-28-2010, 04:10 AM   #2
Porktacular
LQ Newbie
 
Registered: Dec 2010
Posts: 7

Original Poster
Rep: Reputation: 0
One more thing - I was poking through the lsusb output, and found this:
Quote:
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
(underlines mine) Does this mean it's running at full-speed (USB 1) speed? Instead of high-speed? Or is it just because it's the root hub?
 
Old 12-28-2010, 04:14 AM   #3
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 16,241

Rep: Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321Reputation: 2321
It's reading, apparently, as usb-1.0, which had a max speed of 1Mb. Get a decent quick, short cable in there. It sounds like things are slowing because of errors. Usb-2.x cables are thicker, and get any 10:1 hubs out of the way.
 
Old 12-28-2010, 12:11 PM   #4
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It actually comes with a very short (about 6 inches) cable, and while I can't tell if it's USB 1.1 or 2.0, I'd be amazed if it were anything but 2.0.

And again, using the same cable plugged into the same port, I got over 3MPbs in Windoze
 
Old 12-29-2010, 02:56 AM   #5
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you do have ehci_hcd loaded?

lsmod |grep ehci
 
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Old 12-29-2010, 03:53 AM   #6
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Quote:
you do have ehci_hcd loaded?
No, apparently I don't! Now we're getting somewhere.
Er, now what? :P
 
Old 12-29-2010, 04:43 AM   #7
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Try to load it manually with
Code:
sudo modprobe ehci_hcd
Then plug in your flash drive and copy some files to it.
 
Old 12-29-2010, 06:42 PM   #8
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TobiSGD:
Quote:
Try to load it manually with sudo modprobe ehci_hcd
Yes, I tried that earlier. Trying it again - still no ehci showing up under lsmod though. Is that normal? Transfer speed looks to have stayed the same.
Yesterday I tried blacklisting uhci_hcd (in case it was loading on boot instead of ehci) but nothing seems to have changed.

Grr, this is driving me nuts!
 
Old 12-30-2010, 04:01 AM   #9
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Cutting to the chase: You need ehci_hcd loaded for usb-2.0; You need a usb-2.0 root hub. I think the smart tweak would be (in /etc/modprobe.d/usb.conf)

install uhci_hcd /sbin/modprobe ehci_hcd; /sbin/modprobe uhci_hcd

Which, should load ehci_hcd before uhci_hcd. When I check for dependencies of ehci_hcd, I see none.
dec@genius:~/download/temp$ uname -r
2.6.35.4-agp
dec@genius:~/download/temp$ grep ehci /lib/modules/2.6.35.4-agp/modules.dep
kernel/drivers/usb/host/ehci-hcd.ko:

Check that it's there with ls -l (I got that lesson once from a zero length firmware file)
 
Old 12-31-2010, 12:37 AM   #10
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@business_kid:

Thanks, I'll try that.
Ok, I did that, but after rebooting, the grep still isn't finding any "ehci". The usb.conf I created is there and complete, but nothing seems to have changed

Also, I'm wondering, what did you mean by this line?
Quote:
kernel/drivers/usb/host/ehci-hcd.ko:
I don't know where that directory is?
 
Old 01-01-2011, 04:55 AM   #11
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dec@genius:~/download/temp$ grep ehci /lib/modules/2.6.35.4-agp/modules.dep
kernel/drivers/usb/host/ehci-hcd.ko:

The top line is my search of the local modules, and the bottom is the result. So your ehci_hcd module should be in /lib/modules/<your kernel version>/kernel/drivers/usb/host/ehci-hcd.ko

Check that it exists, and is not zero length.
 
Old 01-04-2011, 11:33 PM   #12
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Ack. Ok, it doesn't exist.

Another forum I hang out on has several people who are of the opinion that I'm having a problem with this bug:
https://bugs.launchpad.net/ubuntu/+b...2?comments=all

In that case, I'm pretty much boned.
But I'm going to try and figure out why I can't get ehci in the modules first... Thanks.
 
Old 01-05-2011, 01:02 AM   #13
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Quote:
Originally Posted by Porktacular View Post
...
Computer: AMD 64 Quad core, USB 2.0 on front bus, dual booting Vista and Ubuntu 10.10
Device: New Sansa Clip+ 8GB mp3 player
...
If you'd use your user profile or signature you needn't spell it out explicitly every time you ask a question ... .
 
Old 01-05-2011, 02:38 AM   #14
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