[xubuntu-users] USB camera being intercepted?

[Petter Adsen]

On Thu, 26 Nov 2015 22:23:50 +0000
Peter Flynn <peter at silmaril.ie> wrote:

> On 26/11/15 14:01, Hartmut Haase wrote:
> > Hi Peter,  
> >> but the camera is old and just has built-in
> >> storage  
> > this can be the reason of your problem.  
> 
> Maybe, but the camera gets recognised by the system when I plug it in:

Does it get mounted? If it does, unmount it with either umount or
gvfs-mount -u before running Digikam.

> > Nov 26 22:13:36 noah mtp-probe: checking bus 6, device 3:
> > "/sys/devices/pci0000:00/0000:00:1d.1/usb6/6-1" Nov 26 22:13:36
> > noah mtp-probe: bus: 6, device: 3 was not an MTP device  
> 
> But then WTF is colord-sane trying to access it? Does the system think
> it's a scanner?

That's probably just the name for the colord handler for input devices.

> > Nov 26 22:13:37 noah org.gtk.Private.GPhoto2VolumeMonitor[14206]:
> > (process:18283): GVFS-GPhoto2-WARNING **: device (null) has no
> > BUSNUM property, ignoring  
> 
> I have no idea what a BUSNUM is or why GPhoto2 is looking for one.
> 
> > Nov 26 22:13:37 noah kernel: [13486.936305] usb 6-1: usbfs:
> > interface 0 claimed by usbfs while 'gvfs-gphoto2-vo' sets config
> > #0  
> 
> This seems to be the problem: usbfs has claimed the interface and
> refuses to let anything else use it.

AFAIK usbfs is a kernel handler, but the rest of that message could be
meaningful. Have you tried killing 'gvfs-gphoto2-volume-monitor'?

> > Nov 26 22:13:37 noah org.gtk.Private.GPhoto2VolumeMonitor[14206]:
> > (process:18283): GVFS-GPhoto2-WARNING **: device (null) has no
> > BUSNUM property, ignoring Nov 26 22:13:37 noah colord[832]:
> > (colord:832): Cd-WARNING **: CdMain: failed to emit DeviceAdded:
> > failed to register object: An object is already exported for the
> > interface org.freedesktop.ColorManager.Device
> > at /org/freedesktop/ColorManager/devices/sysfs__null_  
> 
> And WTF is colord doing here again sticking its oar in where it's not
> wanted? :-)

Colord is probably just trying to set up color management for the
device.

> > Did you try gigolo?  
> 
> That seems to be some kind of connector for FTP and shares. I'm not
> clear how or why it would be useful as it doesn't mention USB or
> cameras.

It's a frontend to gvfs, so I assume he meant you could use it to
connect to the camera and copy files manually. But I understand that is
not what you want.

> In any event, the problem is that NO application can connect to the
> device because something (usbfs?) has "claimed" it and won't let go.

Have you tried Shotwell? It might work better within the gvfs framework.

Petter

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