Keyboard issue


3 posts
by Rabbit80 » Sat Jan 12, 2013 10:44 pm
Hi,

I'm having issues with my keyboard - as though key presses are missed or keys are held down.

I know the common cause of this is power issues however in this case I think it is something else.

This ONLY happens under the latest build of Raspbian - other OS are not affected (eg RiscOS, Arch etc) and the problem goes away until reboot if I unplug the keyboard then plug it in again. It is unaffected by overclock settings etc.

I am using a 2A USB charger for power and the keyboard is plugged into a powered USB hub. There are no other peripherals plugged in.

Any ideas?

Cheers

Rab
Posts: 23
Joined: Thu Jan 10, 2013 4:39 pm
by Jim JKla » Sat Jan 12, 2013 11:40 pm
You don't say what brand/flavour of keyboard. It could be important. ;)
Noob is not derogatory the noob is just the lower end of the noob--geek spectrum being a noob is just your first step towards being an uber-geek ;)

If you find a solution please post it in the wiki the forum dies too quick
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Location: Newcastle upon Tyne UK
by Rabbit80 » Sun Jan 13, 2013 12:06 am
lsusb -v gives this info...

Code: Select all
Bus 001 Device 005: ID 05a4:1700 Ortek Technology, Inc.
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x05a4 Ortek Technology, Inc.
  idProduct          0x1700
  bcdDevice            1.01
  iManufacturer           1
  iProduct                2
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           59
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      1 Keyboard
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      54
         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     0x0008  1x 8 bytes
        bInterval              10
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      2 Mouse
      iInterface              0
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     177
         Report Descriptors:
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10



And it is This Keyboard from Maplin
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Joined: Thu Jan 10, 2013 4:39 pm