Re: [PLUG] Problem with USB Flash Disk

[Martin DiViaio <scatterbrained@usermail.com>]

> USB 2.0 output of /proc/bus/usb/devices:
> Bus=04 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=  3 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=0781 ProdID=7101 Rev= 1.02
> S:  Manufacturer=SanDisk Corporation
> S:  Product=Cruzer Mini
> S:  SerialNumber=000132114
> C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
> I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50
> Driver=usb-storage
> E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> 
> DMESG:
> 
> hub.c: new USB device 00:1d.7-3, assigned address 2
> usb.c: USB device 2 (vend/prod 0x781/0x7101) is not claimed by any
> active driver.

The USB module doesn't have a clue about what the device is so it's going 
to take a guess.

> Initializing USB Mass Storage driver...
> usb.c: registered new driver usb-storage
> scsi1 : SCSI emulation for USB Mass Storage devices
>   Vendor: Generic   Model: STORAGE DEVICE    Rev: 1.02
>   Type:   Direct-Access                      ANSI SCSI revision: 02
> WARNING: USB Mass Storage data integrity not assured
> USB Mass Storage device found at 2
> USB Mass Storage support registered.
> Attached scsi removable disk sda at scsi1, channel 0, id 0, lun 0
> SCSI device sda: 512000 512-byte hdwr sectors (262 MB)
> sda: Write Protect is off
>  sda: sda1
> inserting floppy driver for 2.4.22-1.2140.nptl
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The USB module is guessing (incorrectly) that the device is a floppy 
drive.

> floppy0: no floppy controllers found

Expected.

> hub.c: USB device not accepting new address (error=-71)
> scsi: device set offline - not ready or command retry failed after bus
> reset: host 1 channel 0 id 0 lun 0
>  sda: I/O error: dev 08:00, sector 0
>  I/O error: dev 08:00, sector 0
>  unable to read partition table
> usb.c: USB disconnect on device 00:1d.7-3 address 2
> inserting floppy driver for 2.4.22-1.2140.nptl
> floppy0: no floppy controllers found

Since the floppy module load failed, the USB module backs out of what it 
started.


Someone has already said to check to make sure that the hotplug packages 
are installed. You will also want to check the usb.* files in /etc/hotplug 
to see if the card is identified. If not, you will have to add it and 
restart the hotplug daemon.

Adding it is a little bit of an artform as there is little documentation
on the process (at least I couldn't find any when I had to do it.) Running
hotplugd in debug mode will provide some really important clues on what
goes where.


___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug