as pascal said, you have to unmount it. maybe even kill daemons like
gvfs-gphoto2-volume-monitor.

j.


On Sun, Apr 7, 2013 at 9:47 PM, David Vincent-Jones <[email protected]>wrote:

> This appears to address the same problem that I questioned a few days ago.
>
> I have turned off all automatic mounting of external devices and the
> following displays in the terminal:
> david@david-T400:~$ darktable -d camctl
> [camera_control] creating new context 23fa980
> [camera_control] loaded 1451 camera drivers.
> [camera_control] loaded 41 port drivers.
> [camera_control] 1 cameras connected
> [camera_control] gphoto2 error: PTP I/O error
> [camera_control] failed to initialize camera Canon EOS 50D on port
> usb:003,003
> [camera_control] failed to initialize device Canon EOS 50D on port
> usb:003,003, probably causes are: locked by another application, no
> access to udev etc.
> [camera_control] registering listener 44b4340
>
> Ideas to solve this would be appreciated. This really is a nuisance.
> Darktable crashes if I try to remove the camera even with the camera
> turned off.
>
> David
> On 13-04-07 12:38 AM, Pascal de Bruijn wrote:
> > On Sun, Apr 7, 2013 at 12:16 AM, Georg Trentmann <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> >     Hi,
> >     reading some pleasant articles about Darktable has be the reason
> >     for me to hunt for an laptop in the bay and give Linux a trial
> >     again. Last time (about 15 years ago) I used Suse. Now I decided
> >     for the newest Mint with Cinnamon desktop.
> >
> >     I installed Darktable 1.14 by using the ppa's.
> >
> >     Now I'm very sorry to bother you with an issue I can't get solved
> >     with my small knowledge:
> >
> >     The camera is not recognized...
> >
> >     I started Darktable with command line parameter '-d camctl' and
> >     found the following lines in the Log:
> >
> >         [camera_control] 1 cameras connected
> >         [camera_control] failed to initialize camera Nikon DSC D700
> >         (PTP mode) on port usb:001,004
> >         [camera_control] failed to initialize device Nikon DSC D700
> >         (PTP mode) on port usb:001,004, probably causes are: locked by
> >         another application, no access to udev etc.
> >
> >     Does anybody know what to do to get it running?
> >
> >
> > This is just a guess, but your desktop environment probably has the
> > camera mounted or something. Try unmounting it first...
> >
> > Regards,
> > Pascal de Bruijn
> >
> >
> >
> >
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