gtkam: Could not initialize camera.

I have Canon Ixus 80IS. Canon cameras have "a feature" that they are not a USB mass storage. Maybe they have some fucking reason for this, noone knows...

Under Linux, one needs gphoto2 in order to download photos from the camera on USB. And one also needs usbfs mounted to /proc/bus/usb and of course one needs proper permissions. For example on current Debian unstable I had to add this line to /etc/fstab:

none  /proc/bus/usb  usbfs  defaults  0  0

And one also needs a user accessing the camera to be in group plugdev. Permissions on devices in /proc/bus/usb/... are set by some of beasts like udev/hal/wtf. No matter, plugdev did the trick for me.