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Old 02-29-2004, 04:16 PM   #1
bluefire
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Thumbs down digital camera: "Could not claim the USB device"


Hey folks, my digitial camera has encountered weirdness since I upgraded from Mandrake to Debian. I have gphoto2 installed, and gtkam as the frontend.

As a regular user, gtkam cannot initialize the camera, and gphoto2 --summary gives me:

*** Error ***
An error occurred in the io-library ('Could not claim the USB device'): Could not claim interface 0 (Operation not permitted). Make sure no other program or kernel module (e.g. dc2xx or stv680) is using the device and you have read/write access to the device.

If I run either as root, I can mount the camera succesfully.

I don't wish this to be a solution, however, since I don't wish the rest of my family to have root access, whereas they should be able to upload the photos from the camera. The model is a Canon Powershot A20.

(Preemptively Mount /dev/sda1 /mnt/camera gives me: Not a valid block device.

Thanks
 
Old 02-29-2004, 07:02 PM   #2
finegan
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Debian probably has something chmoded funny, what device is the camera getting assigned? Check "dmesg" to find out the /dev/ node name that the camera gets assigned to... its something weird I think, not just mass storage /dev/sda like normal USB toys...

Just paste in the chunk of "dmesg" at the end during the camera device scan.

Cheers,

Finegan
 
Old 02-29-2004, 09:33 PM   #3
bluefire
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I don't think this is providing the info you're looking for:

hub.c: new USB device 00:01.2-1.4, assigned address 3
usb.c: USB device 3 (vend/prod 0x4a9/0x304e) is not claimed by any active driver.

I read somewhere else that Canons don't register as block devices, so it could very well be /dev/sda1

Last edited by bluefire; 02-29-2004 at 09:35 PM.
 
Old 02-29-2004, 09:42 PM   #4
finegan
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That's the output in "dmesg" if you mount the camera as root?

This is a little odd, not getting claimed by an active driver but being read right makes me think its using libusb to direct access the device from userland, which in order to get joe user access means monkeying with an fstab entry in /proc, which might be covered under the docs at gphoto2, maybe...

Cheers,

Finegan
 
Old 12-04-2007, 12:38 AM   #5
nobtiba
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Quote:
Originally Posted by bluefire View Post
Hey folks, my digitial camera has encountered weirdness since I upgraded from Mandrake to Debian. I have gphoto2 installed, and gtkam as the frontend.

As a regular user, gtkam cannot initialize the camera, and gphoto2 --summary gives me:

*** Error ***
An error occurred in the io-library ('Could not claim the USB device'): Could not claim interface 0 (Operation not permitted). Make sure no other program or kernel module (e.g. dc2xx or stv680) is using the device and you have read/write access to the device.

If I run either as root, I can mount the camera succesfully.

I don't wish this to be a solution, however, since I don't wish the rest of my family to have root access, whereas they should be able to upload the photos from the camera. The model is a Canon Powershot A20.

(Preemptively Mount /dev/sda1 /mnt/camera gives me: Not a valid block device.

Thanks
Hi Bluefire, I would like to know your solution if you solved it. Could you help me please, I got the same thing with my Aiptek Pencam
 
  


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