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    SubjectUSB Digital Camera mount problem [WAS: Removable USB device contents cached after removal?]
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    On Thursday 01 January 2004 06:48, Vid Strpic wrote:
    > > 9. dd if=/dev/sdd1 of=/dev/null results in "No medium found"
    >
    > usb-storage behaves differently in 2.6 than in 2.4, maybe this is the
    > problem for you now.

    I get "No medium found" when I try to mount the SD card inside my digital
    camera (Panasonic DMC-LC33.) It works fine in 2.4.18 that comes with Debian,
    but I get the above message in 2.6.0 (and couple of releases before it - it
    is a fairly new camera, ~2 months old.)

    Any ideas how to debug it?

    Jeff.

    When plugged in:

    kernel: hub 2-2:1.0: new USB device on port 4, assigned address 3
    kernel: Initializing USB Mass Storage driver...
    kernel: scsi1 : SCSI emulation for USB Mass Storage devices
    kernel: Vendor: MATSHITA Model: DMC-LC33 Rev: 0100
    kernel: Type: Direct-Access ANSI SCSI revision: 02
    kernel: SCSI device sda: 246017 512-byte hdwr sectors (126 MB)
    kernel: sda: Write Protect is off
    kernel: sda: Mode Sense: 00 06 00 00
    kernel: sda: assuming drive cache: write through
    kernel: sda: sda1
    kernel: Attached scsi removable disk sda at scsi1, channel 0, id 0, lun 0
    kernel: Attached scsi generic sg0 at scsi1, channel 0, id 0, lun 0, type 0
    kernel: WARNING: USB Mass Storage data integrity not assured
    kernel: USB Mass Storage device found at 3
    kernel: drivers/usb/core/usb.c: registered new driver usb-storage
    kernel: USB Mass Storage support registered.
    scsi.agent[22366]: disk at /devices/pci0000:00/0000:00:1f.4/
    usb2/2-2/2-2.4/2-2.4:1.0/host1/1:0:0:0
    When I try to mount it, mount refuses, but there are no log messages:

    jeff:~# mount /dev/sda1 /mnt/camera/
    mount: No medium found
    jeff:~#

    And when I shut the camera off, I get:

    kernel: usb 2-2.4: USB disconnect, address 3

    The modules:

    jeff:~# lsmod
    Module Size Used by
    usb_storage 34688 0
    nvidia 1704492 10
    tvaudio 21888 0
    msp3400 22928 0
    bttv 140704 1
    video_buf 22400 1 bttv
    i2c_algo_bit 10248 1 bttv
    btcx_risc 5252 1 bttv
    v4l2_common 5376 1 bttv
    videodev 10368 2 bttv
    uhci_hcd 31240 0
    usbcore 109012 4 usb_storage,uhci_hcd
    evdev 10496 0
    tuner 15108 0
    i2c_core 24964 5 tvaudio,msp3400,bttv,i2c_algo_bit,tuner
    eepro100 31244 0
    mii 5632 1 eepro100

    - --
    You measure democracy by the freedom it gives its dissidents, not the
    freedom it gives its assimilated conformists.
    - Abbie Hoffman
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