[digiKam-users] How to interpret DigiKam error message when connecting to camera

[Stuart Rogers]

I understand, however surely the distro should allow the user set the option to not allow automounting just as openSUSE does. Is that not a bug in the distro?

Stuart

On 29 June 2020 17:28:53 BST, "Remco Viëtor" <remco.vietor at wanadoo.fr> wrote:
>On lundi 29 juin 2020 18:01:27 CEST Stuart T Rogers wrote:
>> Well I have been able to recreate the message from Digikam but only
>by
>> having the camera open in Dolphin file manager and accessing the
>files,
>> then Digikam fails to connect.
>> 
>> One interesting point I have found is that if I have the camera open
>in
>> Dolphin accessing the files then I can also open the camera in
>Gwenview
>> at the same time but still not in Digikam. This does mean to me that
>> Digikam is accessing the camera using a different method to that of
>some
>> other applications. I have also tested Darktable and it also is
>unable
>> to access the camera if it is open in another app like Dolphin or
>> Gwenview, so it looks like Darktable uses the same method as Digikam
>and
>> would likely exhibit the same issue on your system (it shows no
>> supported devices when I try to scan for devices on import).
>> 
>> Also on checking how my distro manages removable devices I have it
>set
>> to NOT auto mount anything at all!
>> 
>> I think the only resolution for you would be to raise this as an
>issue
>> with your distro as it looks like Digikam is working as designed.
>
>That would be consistent with the computer using the MTP protocol to
>access 
>the camera. Iirc, that protocol allows only one access at the time to
>the file 
>system on the camera, so once KDE/Plasma grabs the device, Digikam
>won't have 
>access anymore. Same for Darktable, as neither is using the KDE
>libraries 
>(gPhoto2 is used to access the camera). 
>
>That also means that the distro works as designed, as the failure is
>inherent 
>to the protocol used. 
>
>So there are two options:
>- tell the camera to behave as a mass storage device (if that's
>possible), 
>then it can be mounted as an external drive
>- use a card reader
>
>Remco
>
>(P.S. I told OP the same thing in his parallel thread, he chose to skip
>over 
>the MTP bit, and just started ranting about how using a card reader was
>more 
>complicated and bad for the SD card, he is now ignored both here and in
>the dt 
>list)

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