If i start gphoto/gtkam with root previlegies i can accsess the camera as "USB PTP Class Camera".
Under normal user account i can not access because of policy rules i got this in messages.log when i plug the cam via usb:
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Apr 18 10:30:01 serialkilla64 kernel: usb 1-3.2: new high speed USB device using ehci_hcd and address 11
Apr 18 10:30:01 serialkilla64 kernel: usb 1-3.2: configuration #1 chosen from 1 choice
Apr 18 10:30:01 serialkilla64 load-modules.sh: 'usb:v04CBp01DDd0100dc00dsc00dp00ic06isc01ip01' is not a valid module or alias name
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# gphoto2 --auto-detect
Modell Port
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USB PTP Class Camera usb:
USB PTP Class Camera usb:001,011
Dmesg:
...
usb 2-2: usbfs: USBDEVFS_CONTROL failed cmd gtkam rqt 128 rq 6 len 1000 ret -110
...
i added the id to our lists for the next release.
However your distro should have a generic PTP permission handling, either via udev or via hal.
If not, it should add it.
As workaround, check the libgphoto2 package for either a udev rules or a hal fdi file and add the id (0x4cb / 0x01dd) there.
tahnks for the report!