Re: [gentoo-user] Problems mounting Nikon D40 Camera, vfat FS issue?

[Hal Martin]

darren kirby wrote:
> Hello all,
>
> Trying for the first time to download images from a new Nikon D40 camera.
> libgphoto2 lists the camera as supported in PTP mode. I have tried using PTP
> mode with digikam (hooking up the camera directly), and also simply trying to
> mount the memory card using a card reader. Both methods fail.
>
> The card is recognized:
>
> usb 1-5: new high speed USB device using ehci_hcd and address 2
> usb 1-5: configuration #1 chosen from 1 choice
> scsi6 : SCSI emulation for USB Mass Storage devices
> usb-storage: device found at 2
> usb-storage: waiting for device to settle before scanning
> scsi 6:0:0:0: Direct-Access     Generic  STORAGE DEVICE   0001 PQ: 0 ANSI: 0
> sd 6:0:0:0: [sdc] Attached SCSI removable disk
> sd 6:0:0:0: Attached scsi generic sg3 type 0
> usb-storage: device scan complete
> sd 6:0:0:0: [sdc] 3970048 512-byte hardware sectors (2033 MB)
> sd 6:0:0:0: [sdc] Write Protect is off
> sd 6:0:0:0: [sdc] Mode Sense: 02 00 00 00
> sd 6:0:0:0: [sdc] Assuming drive cache: write through
> sd 6:0:0:0: [sdc] 3970048 512-byte hardware sectors (2033 MB)
> sd 6:0:0:0: [sdc] Write Protect is off
> sd 6:0:0:0: [sdc] Mode Sense: 02 00 00 00
> sd 6:0:0:0: [sdc] Assuming drive cache: write through
>  sdc: sdc1
>
>
usb 1-4: new high speed USB device using ehci_hcd and address 8
usb 1-4: configuration #1 chosen from 1 choice
scsi7 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 8
usb-storage: waiting for device to settle before scanning
scsi 7:0:0:0: Direct-Access     NIKON    D40              1.10 PQ: 0 ANSI: 2
sd 7:0:0:0: [sdc] 3970048 512-byte hardware sectors (2033 MB)
sd 7:0:0:0: [sdc] Write Protect is off
sd 7:0:0:0: [sdc] Mode Sense: 0f 00 00 00
sd 7:0:0:0: [sdc] Assuming drive cache: write through
sd 7:0:0:0: [sdc] 3970048 512-byte hardware sectors (2033 MB)
sd 7:0:0:0: [sdc] Write Protect is off
sd 7:0:0:0: [sdc] Mode Sense: 0f 00 00 00
sd 7:0:0:0: [sdc] Assuming drive cache: write through
sdc: sdc1
sd 7:0:0:0: [sdc] Attached SCSI removable disk
sd 7:0:0:0: Attached scsi generic sg2 type 0
usb-storage: device scan complete
> Attempts in PTP mode fail with digikam reporting "Failed to connect to the
> camera. Please make sure it is connected properly and turned on". The camera
> itself reports that it is connected to the computer properly. When directly
> mounting I get:
>
>
> # mount -t vfat /dev/sdc1 /mnt/camera
> mount: wrong fs type, bad option, bad superblock on /dev/sdc1,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
>
Works on my D40. I haven't tried with digikam though, as I prefer to use 
direct file access. I assume that if mounting the card works, PTP should 
as well.
> I have these lines in my dmesg whenever I try to mount it, or use PTP mode:
>
> Unable to load NLS charset cp437
> FAT: codepage cp437 not found
>
> In my kernel config I have this:
>
> (437) Default codepage for FAT
>
> So, is there something else I need to get this codepage? The camera appears to
> be detected just fine, and the issue seems to be directly related to mounting
> the vfat filesystem and this missing codepage...
>
> Just to note: It is a stable amd64 Gentoo system, and I do have vfat module
> loaded when I attempt to mount.
>
I am on the same arch and have the module fat and vfat loaded. Kernel 
version 2.6.23-gentoo-r6.
> Any other ideas?
>
Use an SD card reader, pull your data off, then format the card again?

If you'd like, I can post my kernel config and you can look for 
differences between them.
> Thanks for consideration,
> -d
>
-Hal
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