Arch Linux

stephanvl

Member

Registered: 2014-04-14

Posts: 12

no /dev/sdx for usb

Hello,

When I put an usb device in my computer, there isn't a /dev/sdx created.
There is a /dev/bus/usb/<bus>/<device> created though.

It was working before on the same usb port.
hope someone can help, here are some command outputs:

lsusb

...
Bus 004 Device 013: ID 18d1:4ee2 Google Inc. Nexus 4 (debug)
...

It says nexus 4, although it's a nexus 5.

The only thing about the usb in dmesg is:

[ 2345.149920] usb 4-1.3: new high-speed USB device number 13 using ehci-pci

lsusb -v

Bus 004 Device 013: ID 18d1:4ee2 Google Inc. Nexus 4 (debug)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x18d1 Google Inc.
  idProduct          0x4ee2 Nexus 4 (debug)
  bcdDevice            2.32
  iManufacturer           1 LGE
  iProduct                2 Nexus 5
  iSerial                 3 0483409409e8aba6
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol      0 
      iInterface              4 MTP
      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     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            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x001c  1x 28 bytes
        bInterval               6
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass     66 
      bInterfaceProtocol      1 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 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

simbasad24

Member

From: Chandannagar, India

Registered: 2014-04-13

Posts: 8

Re: no /dev/sdx for usb

Do you have libmtp installed? You can check out this wiki page: https://wiki.archlinux.org/index.php/MTP#Installation

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