Where is a Camera Mount Point?

Sat Oct 25 22:01:25 UTC 2014

On 10/25/2014 01:31 PM, poma wrote:
> On 25.10.2014 03:19, poma wrote:
>> On 25.10.2014 02:09, poma wrote:
>>> On 25.10.2014 01:31, Stephen Morris wrote:
>>>> On 10/25/2014 01:09 AM, poma wrote:
>>>>> On 24.10.2014 07:50, Stephen Morris wrote:
>>>>>> I have plugged a digital camera into my usb port and mounted it using
>>>>>> the popup displayed from the auto detect via konqueror (this annoys me
>>>>>> as well). When konqueror is launched it displays the contents via
>>>>>> Camera:/ which is okay, but subsequently I can't find any entries under
>>>>>> /run that represent the camera. I assumed there would be a mount point
>>>>>> under /run like there is for a usb flash disk. Given that there appears
>>>>>> to not be a mount point under /run, where is it mounted in Fedora 20, so
>>>>>> that I can point dolphin (which is what should be launched from the
>>>>>> 'Open with File Manager' prompt, not Konqueror) at the mount point
>>>>>> rather than having to manually type Camera:/ into the address bar.
>>>>> ptp != usb_storage
>>>>>
>>>>> http://en.wikipedia.org/wiki/Picture_Transfer_Protocol
>>>>> http://www.gphoto.org/proj/libgphoto2/
>>>>>
>>>>> modinfo -d usb_storage
>>>>> USB Mass Storage driver for Linux
>>>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/plain/drivers/usb/storage/Kconfig
>>>>>
>>>>>
>>>>> poma
>>>>>
>>>> Thankyou for the links. I looked at those links which gave me a lot more
>>>> information that I didn't know about. Unfortunately the documentation on
>>>> libphoto2 seems to potentially be self conflicting. The list of cameras
>>>> that libphoto2 supports seems to have my Nikon D3100 listed, but the
>>>> list of cameras and how they are supported under Unix does not appear to
>>>> list my camera.
>>>> Following Cameron's email I checked the mount list which seems to
>>>> indicate there is no mount point, which also coincides with the
>>>> available device interface in the system tray not being able to unmount
>>>> the camera before disconnection.
>>>> Also now that I have changed to application preference order in the
>>>> properties of the folder displayed by dolphin, whenever I select 'Open
>>>> with File Manager' at device detection time the process correctly
>>>> launched dolphin to display the contents, whereas yesterday when
>>>> konqueror was the default application, manually pointing dolphin at
>>>> Camera:/ would not display the contents of the camera because dolphin
>>>> was trying to treat the camera as a usb device and couldn't acquire the
>>>> usb. The only issue with dolphin is it doesn't display the folder name
>>>> where the images are stored on the camera as the same name that the
>>>> camera says it is, dolphin seems to be putting its own prefix on the
>>>> folder name.
>>>> Also dolphin seems to be starting at a higher point in the directory
>>>> tree for its displays than where Windows starts.
>>>> DigiKam now seems be displaying the files on the camera now as well,
>>>> whereas yesterday it couldn't either, although digiKam doesn't
>>>> understand the raw format files that I am taking with the camera. I
>>>> could use jpeg images but that is not as good for image manipulation and
>>>> corrections as raw is. I can process these files using the raw interface
>>>> to Photoshop Elements and Elements itself, albeit under windows, so not
>>>> being able to access these under Linux is not that big a deal to me,
>>>> other than the fact that I have to use Windows.
>>>>
>>>> regards,
>>>> Steve
>>>>
>>> Does the Nikon D3100 supports USB mass storage mode?
>>> http://goo.gl/7bGFuh
>>>
>>
>> In this respect manual(D3100_EN.pdf) is questionable
>> http://www.nikonusa.com/en/Nikon-Products/Product/dslr-cameras/D3100.html#tab-ProductDetail-ProductTabs-Support
>>
>> Therefore you can try this *if* the device supports both - PictBridge(PTP) & USB storage, and they collide:
>>
>> /etc/modprobe.d/usb_storage-quirks-Nikon_D3100.conf
>> # Nikon D3100
>> #
>> # lsusb
>> # ID 04b0:0130 Nikon Corp. Coolpix 4600 (ptp)
>> # ID 04b0:0427 Nikon Corp.
>> # modinfo -p usb_storage
>> # ...
>> # quirks:supplemental list of device IDs and their quirks (string)
>> #
>> # 1.
>> options usb_storage quirks=04b0:0130:i
>> #
>> # 2.
>> # options usb_storage quirks=04b0:0427:i
>> #
>> # 3.
>> # options usb_storage quirks=04b0:0130:i,04b0:0427:i
>> #
>> # *uncomment* only *one* of the three *options* that you'll *use* as the first case!
>>
>>
>> Ref.
>> - https://www.kernel.org/doc/Documentation/kernel-parameters.txt
>> ..
>> 	usb-storage.quirks=
>> 			[UMS] A list of quirks entries to supplement or
>> 			override the built-in unusual_devs list.  List
>> 			entries are separated by commas.  Each entry has
>> 			the form VID:PID:Flags where VID and PID are Vendor
>> 			and Product ID values (4-digit hex numbers) and
>> 			Flags is a set of characters, each corresponding
>> 			to a common usb-storage quirk flag as follows:
>>                                  ...
>> 				i = IGNORE_DEVICE (don't bind to this
>> 					device);
>>                                  ...
>> 			Example: quirks=0419:aaf5:rl,0421:0433:rc
>>
>> - https://www.kernel.org/doc/Documentation/usb/hotplug.txt
>>
>> - USB: add Nikon D300 camera to unusual_devs
>>    https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/usb/storage/unusual_devs.h?id=0047ca0
>>
>>
> BTW
> - Nikon D3100 specifications
>    http://www.dpreview.com/reviews/nikond3100/page2.asp
>    ...
>    Connectivity    • USB 2.0 (Hi-Speed)
>                    • Mass storage / PTP selectable
>
> - Digikam support Nikon D3100
>    http://thread.gmane.org/gmane.comp.kde.digikam.user/14517
>
> Xfce
> - USB storage
> $ thunar /run/media/user/</dev/disk/by-uuid/>/
>
> - MTP (Media Transfer Protocol)
> $ thunar mtp://[usb:<bus>,<devnum>]/
>
> - PTP (Picture Transfer Protocol)
> $ thunar gphoto2://[usb:<bus>,<devnum>]/
>
>
>
> Good luck with reading and playing with the device. :)
>
>
> poma
>
>
> Ref.
> Mailing list
> https://www.digikam.org/contact?q=support#mailinglists
Thanks for all the info Poma, there is some very useful information in 
those links. Even though the links say the camera is switchable between 
the 2 modes I'm not sure whether it is manually switchable. The manual 
and camera itself don't have any details on how to do it. It seems as 
though it may be automatically switchable depending on the access 
mechanism. Under linux it seems to be accessed via PTP but under Windows 
(I'll need to double check this) it seems to be accessed in USB Mass 
Storage mode as it seems to be mounted as a USB device. I was able to 
remove files from the SD card on the camera using dolphin and digiKam 
was able to access the files directly by auto navigating down to the 
appropriate directory, but GIMP was unable to touch the camera at all.

regards,
Steve


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